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TheAmigo
11-20-2001, 20:45
I have what can only be described as a ticking noise, that kinda sounds like sticky lifters, in my Duramax. Anyone else have this? I can barely hear it at idle, if at all. It increases in loudness as I increase engine speed. I think it just started recently(my wife's truck).

Any ideas? Everything runs fine, no problems, just wondering if I should mention it to the dealer at all.

-Nathan


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2002 2500HD 4X4 CC SB
Duramax/Allison

More Power
11-20-2001, 21:03
Search this forum using the keyword "ticking".

Jim

mackin
11-20-2001, 21:13
Mine did it for awhile. It went away.
If you can ignore it .
It will go away . Enjoy the truck don't worry about the little bugs .

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2001 CHEVROLET
BIG DUALLY D/A LT
BLACK EXT. GRAPHITE LEATHER
INT. AMSOIL BUMPER TO BUMPER
2001 MONTE CARLO SS

Trucker Tex
11-20-2001, 22:37
Funny, but it seems to come and go. I had it when the truck was new. Then it seemed to get fainter with miles, finally diappearing altogether shortly after my first oil change at 800 miles. Then, just last week I pulled into the garage after driving home from work and there it is back, louder than ever at 3700 miles. Had it for a few days, now its gone again.

There is only one explanation for this phenomenon. Gremlins! Or, maybe sun spots.

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2002 GMC 2500HD D/A, Crew Cab, Short Bed, Pewter with Pewter SLT Leather, Westin Stainless Nerfs, Line-X Bed Liner. Run GM Synthetic Diff, Chevron Delo 400, Amsoil air filter, Stanadyne Performance Formula and Allison/Castrol TranSynd.

TheAmigo
11-20-2001, 23:44
I've read most of the ticking posts, but most seem to hear it most at idle, and they say that it sounds random? Mine is not random, it's a steady ticking in time with the engine, mostly. It's not dead on every time, but it's definitely happening due to engine turnover.



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2002 2500HD 4X4 CC SB
Duramax/Allison

hoot
11-20-2001, 23:58
Mine went away entirely at about 10,000 miles. Now it comes back once in a while, not as loud as before. Most of the time its not there.

When I first got the truck, I was mad. After talking to everyone about it and getting reassured, I relaxed and just lived with it.
It's now almost never on my mind.

Mine would stop ticking around 1200 rpm and up. It was erratic.

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Mike (dmax) DP Member #2429
2001 2500HD GMC Duramax/Allison Summit White CC/SB Loaded, Amsoil Air Filter, PS2K Propane, 22 Gal. LP Tank, Straight Piped, Allison Deep Pan, Transynd Syn ATF, SPA DG-111 Boost/EGT, Nordskog Digital Fuel Level, VentShades, Husky Mudflaps, 255/85-R16 Dunlop Radial Rover RV's PICTURES (http://onramp.uscom.com/~hoot/cars/duramax/gmc)
1994 K1500 Blazer 350 Loaded, Flowmaster duals

TheAmigo
11-21-2001, 00:13
Well, I did a search on "ticking" and found, basically, two descriptions of this problem.

I found this great description of the sound >I'M< having:
------------
By: armalite
The ticking or tapping sounds much like a bad lifter or loose rocker-arm in a gasser engine. It is in cadence with engine RPM but usually in the low RPM range, say from idle to 1200 or so but could vary with different engines. The annoying sound also seems to occur at various operating temperatures. Some guys claim to hear it when the engine is cold and some claim to hear it when the engine is at full operating temperature. Mine seems to do it accross the board, but not 100% of the time. If you open the hood it sounds like it comes from the top of the engine. If you poke your head in the driver's side wheel well you can hear it better. You can definately hear it bounce off other vehicles at stop lights. Thats when the guy next to you asks "Hey, whats wrong with your engine?"
-------------------

The SECOND description is basically a loud POPPING noise, intermittent, like a "bubble popping" or something. This is NOT the sound I have.

From reading around I see that lots of people seem confused about the sounds. Sometimes they think they're talking about the same sound but they're not.

Thanks,

-Nathan

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2002 2500HD 4X4 CC SB
Duramax/Allison

hoot
11-21-2001, 00:31
The good news is there are no reported problems attributed to the "tick".

Someone even had their oil anylized with no unusual readings. No metal = no wear. Most of the engines have it. I don't think any changes were made to the engine for the 2002 model and they were quite aware of it.

The only thing that bothers me is how could they not know at this stage of the game what the source is.

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Mike (dmax) DP Member #2429
2001 2500HD GMC Duramax/Allison Summit White CC/SB Loaded, Amsoil Air Filter, PS2K Propane, 22 Gal. LP Tank, Straight Piped, Allison Deep Pan, Transynd Syn ATF, SPA DG-111 Boost/EGT, Nordskog Digital Fuel Level, VentShades, Husky Mudflaps, 255/85-R16 Dunlop Radial Rover RV's PICTURES (http://onramp.uscom.com/~hoot/cars/duramax/gmc)
1994 K1500 Blazer 350 Loaded, Flowmaster duals

DmaxMaverick
11-21-2001, 00:55
hoot

Juz cuz day doe say doe mean day doe noe http://www.62-65-dieselpage.com/ubb/biggrin.gif

hoot
11-21-2001, 07:16
Maverick,

Day no.

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Mike (dmax) DP Member #2429
2001 2500HD GMC Duramax/Allison Summit White CC/SB Loaded, Amsoil Air Filter, PS2K Propane, 22 Gal. LP Tank, Straight Piped, Allison Deep Pan, Transynd Syn ATF, SPA DG-111 Boost/EGT, Nordskog Digital Fuel Level, VentShades, Husky Mudflaps, 255/85-R16 Dunlop Radial Rover RV's PICTURES (http://onramp.uscom.com/~hoot/cars/duramax/gmc)
1994 K1500 Blazer 350 Loaded, Flowmaster duals

armalite
11-22-2001, 13:52
TheAmigo:

9500 miles and still ticking. I am flattered that you took my excerpt from a previous post. One other thing, some guys on here report that different brands of oil affect the magnitude of the ticking noise.

ChevysRus
11-22-2001, 14:38
I tink day knt no wat de tic tic tic be. Butt day tri 2 fine de tic tic tic an sum day oui fine out 2. jus hope day fine de tic tic tic b4 me war-t xpir or me be 1 mad pupee.

Seriously, I am sure they are trying to identify the interminent ticking noise. Some one needs to donate a ticker to them so they can tear into it, but no one wants to part with their truck over a stupid ticking noise that is not leaving any symptoms or damage (based on oil analysis so far).

I thought my tick was gone and last weekend I ended up stopped in traffic in an underpass and I could hear a slight tick bouncing off the walls. If not for the underpass I never hear it even when the radio is off.

I reved the truck up a little and it went away. Also I like to shift into neutral when I am stopped at a red light and the engine really gets quiet in neutral, I love to do this when I am next to a Dodge or Ford

Last weekend at Vegas I was leaving the parking lot and there were a bunch of people walking in the road and I was going slow up behind them waiting for them to move just idling along real quiet. Finally I pushed the pedal a little when I got close to the guys walking and they moved to the side, suddenly my wife of all people lowers the window and yells out to the guys (about 6)saying "pretty damn quiet diesel HUH"! One of the guys says "Damn is that a Diesel, I never heard it coming". I loved it especailly to see my wife get into the program!

So just keep ticking or popping along until someone has a problem and then we will all know.

HD=HossDiesel
11-22-2001, 21:57
Good evening gentlemen. Well just got home from dinner but on the way I stopped by the Gin Mill to have a few, and ran into a friend who works as a test mechanic in the tunnels at our plant. I asked him if he had heard anything about the mystery tic. He said "the one that sounds like valve train clatter". I said no the other one. He said as everyone else has that they don't know about the tick tick. But the one Amigo is asking about might be injector noise. He says it sounds like a bad lifter only softer and increases with RPMS. Totally normal operation. They have had several of them in the plant and he says some do it, some don't. Incidentally I have a friend with a 5.3 gasser and had a similar noise (only less noticeable really had to strain to hear it) Dealer told him the same thing, injector noise. These two fuel systems aren't related but interesting that they may produce similar sounds. So hopefully they are right

------------------
Hoss' Diesel
2001 GMC 2500HD SLT C/C D/A...1st One & I LOVE IT
Onyx/Graphite Leather
Every Opt.

HotShot
11-23-2001, 02:44
Amigo,

If the sound is cyclic and matches RPM I would press the dealer to diagnose it and not accept the usual pat answer until you know they have listened/inspected any possible causes.

These trucks have solid lifters, if the lash is a touch loose on one you'll get that kind of sound. Maybe a noisy injector. I've even come across cracked pulleys or small pieces missing on the belt causes similar noises on other vehicles.

HotShot
01-17-2002, 00:39
I noticed my engine getting noisier, started getting a little paranoid. Through some fuel conditioner at it, I think it got louder. Gave it some premium diesel, got so quiet the only way you could tell it was running was the tach wasn't at zero and if you hit the throttle you had to try and hang on. Now I give 'er a tank of the good stuff after about a dozen fills. I think its the cheap winter stuff, will see what happens this summer.

John B
01-18-2002, 15:44
Nathan, yep I've got the same problem. And I agree with you that I think this is a different ticking that most of the guys are talking about on here. Mine started when the truck was new with only 30 miles on it. An injector stuck and it was knocking like it was going to throw a rod. Ever since then I have had this ticking/knocking noise in the engine. I have had it back to the dealer now for the 3rd time(still only have 1600 miles on it). Last trip they did an injector balance test and found 2 injectors that were out of specs and replaced them. The truck runs better but is still making the noise. Today the power steering either blew a hose or the mechanic left a fitting loose last week so its back in the shop for that and for another go at the ticking/knock noise. It sure does sound like a bad lifter to me but also sounds like a rod knock at times. Will keep you posted as to what (if anything) they find!

Wally
01-18-2002, 19:50
Is this the real deal? Copied from one the other BB's whose name or reference to usually gets censored.

jacjmm
Just Joined
Member # 841
Rate Member
posted 01-18-2002 12:43
--------------------------------------------------------------------------------
The ticking noise in the block is indeed the sound of oil as it is leaving the #1 main bearing. The noise is made because of the design of the bearing. The hole in the bearing is round. Newer engines will be made with a slot in the bearing instead of a round hole. The noise eventually does go away because over time the edge of the round hole in the bearing wears away and the noise stops. It is nothing to worry about and will not effect the durability of the engine. I have some experience with these engines and I have had them apart also, as well as its medium duty sister the 7.8L Duramax engine.

hoot
01-18-2002, 21:40
If it is true, what are they waiting for? They got a big box of bearings they want to use up first?

------------------
Mike (dmax) DP Member #2429
2001 2500HD GMC Duramax/Allison Summit White CC/SB Loaded
Amsoil Air Filter, Straight Piped PIC (http://uscom.com/~hoot/cars/duramax/gmc/exhaust/jvn03.jpg)
PS2K Propane, 22 Gal. LP Tank PIC (http://onramp.uscom.com/~hoot/cars/duramax/gmc/propane/bigtank1.jpg)
Allison Deep Pan, Transynd Syn ATF PIC (http://uscom.com/~hoot/cars/duramax/gmc/allison/allis10.jpg)
SPA DG-111 Boost/EGT, Nordskog Digital Fuel Level PIC (http://uscom.com/~hoot/cars/duramax/gmc/allison/allis11.jpg)
VentShades, Husky Mudflaps, 255/85-R16 Dunlop Radial Rover RV's
Kennedy Headlight Booster Kit TRUCK PICTURES CLICK HERE (http://onramp.uscom.com/~hoot/cars/duramax/gmc)
1994 K1500 Blazer 350 Loaded, Flowmaster duals

WannaDieselSub
01-28-2002, 13:51
Now this is strange. Wally posts what appears to be a seemingly sound explanation for the ticking noise, and yet only one person comments. What's up with that? I thought for sure the forum members would be all over this, what with the popularity of "ticking" discussions. Anyone care to corroborate, comment, refute?

Still waiting for a DMax Suburban. Sigh....

MNBowTie
01-29-2002, 21:35
FYI,

I followed the early thread on this forum for at least a month. There was even a audio reproduction posted hear. From what everybody is saying and from what the audio file sounded like. I

AzKevin
01-29-2002, 21:55
MNBowTie,

If it's injector noise how do you explain the DMax ticking noise coming from the bottom of the engine.

------------------
'01 Silverado 2500HD Dmax/Allison EC 4x4 SB, Westin Bars, Fumoto Valve

ChevysRus
01-29-2002, 22:46
Lack of response reflects lack of interest. To date after 1+ year of "ticking" no one has suffered any damage or downtime due to the "Tick". So it would seem, until someone breaks a crankshaft or spins a few bearings Ticking will probably not arouse any passion in the group. Most are just curious as to what the hell is it?

There has been a couple of theories thrown out, but nothing definative from GM. If it was a simple #1 bearing oil return/supply hole issue I would have thought GM would have jumped all over that "easy out". The other "suggestion" was the oil pressure check valve clicking. So until GM stands up and hangs their hat on the correct answer I suppose we will never know for sure.

BUT it is real comforting that no one has issued any real bad news on the tick and we still seem to not have anything to worry about, but again we need to keep our communications going just in case there is a real issue to be dealt with.

As the song said "Don't worry, be happy".

SoCalDMAX
01-29-2002, 23:49
I occasionally have a sound like intermittent typewriter clicking coming from down low on the engine, near the oil filter.
It was not present when new, but appeared immediately after the first oil change at 1100mi with Delo 400 oil. It was only present for a week or so, then went away.

On Sunday, I changed the oil again with Delo 400 at 6700mi and the tick returned, but seems to have disappeared already. Immediately after changing the oil, the clicking sound was very prominent and rapid. Now, only 2 days later, I don't hear it any more. (But then I don't idle it much.)

It does seem to be oil related. I still have some Delo 400 left to use up, but when it's gone, I'll switch to Delvac 1200 and see what happens.

Regards, Steve

------------------
'02 2500HD 2WD LS, grey, CC, SB, D/A, locking diff., alloys, trailer and towing pkg. Delivered 11/09/01
So far:
Bully Dog Max Power Plug, 255/85-16 Dunlop Radial Rover A/T tires, pillar mounted SPA Boost/EGT/oil press./temp gauges, CD/MP3 player, 4-6.5" component speakers, 2-10" subs,1200W of Visonik audio power, Valentine One, Invinca-shield, Bed X-tender, Line-X, Lucerix mirrors, DeeZee running boards, Power tailgate lock, Jordan 2020 Ultima Brake Controller, PIAA headlights, Husky flaps, Amsoil air filter and gear lube, Fumoto valve and tinted windows
Up next:
PS2000 propane, 4" exhaust, high idle, Allison deep sump, tranny oil temp., rear diff. oil temp., Mag-Hytech diff. cover, Spare fuel tank?

Truck Pictures (http://www.pbase.com/sfrakes/2002_silverado)

DrL30047
01-30-2002, 08:38
This was posted by someone a while back. It's a recording of thw "ticking" sound.

http://www.csimo.com/junk/duramax_tickticktick_noise3.wav

D-max Man
01-30-2002, 09:00
MNBowTie,
I have heard this infamous ticking noise in several trucks. I can tell you for cretin that it is not an injector noise. Like others said, it is coming from the Drivers side, lower part of the engine. It also is an intermittent noise. An Injector, it would be constant.

The last word I got on this issue was that it is still under investigation. As soon as I can post something on the cause, I will.




[This message has been edited by D-max Man (edited 01-30-2002).]

WannaDieselSub
01-30-2002, 13:40
Thanks for the update D-Max Man.

I was trying to send you an email, but couldn't find one either in your profile, nor over at your personal page.

It just seemed odd that no one was commenting on the #1 bearing claim and wanted to get your and DMax Quality Dude's take on it. This latest "explanation" seemed reasonable and didn't have the usual exaggerated claims associated with flame bait. Plus it fit the "I changed oil and the ticking started/stopped/increased/etc" thread. Was hoping that this issue was finally dead. Oh well, I still think it's cool that the engine is quiet enough to actually hear the tick. Whenever a DMax truck passes on the highway, I roll my window down, but the only thing heard is wind and tire noise. I can hear a Cummins or Powerstroke coming up with the windows closed! Good, strong engines, just loud as all get-out.

Judging from the recent topics it appears that everyone is hot on diesel leaks around the sender block and whether or not aftermarket boxes contribute. The ticking noise seems to have taken a back seat. I'll keep monitoring....

DMAX Quality Dude
01-31-2002, 06:17
Were getting closer to identifying the root cause of the ticking/popping noise. We've narrowed it down to two components.

What's frustrating for myself is the difficulty of getting information. Ofcourse, that's an excuse, so I'll shut up.

This is a very new engine that is unlike any other, so it is also a learning process for us.

theNUT
01-31-2002, 09:49
hey QC Dude,

I've got 23k on my pewter DMAX/ALLISON and I was one of the original one to post tick tiCK TICK, way back when. I still have the ticking at low 5-700 rpm. If you see the pics, the summit white cc does not have the ticking. My neighbor down the street had his DMax replaced after 3500mi. His new DMax started the same thing as soon as he pulled in the driveway. I figured, I'm not going through all that to have the new motor tick again.
I don't hear the tick at high revs, and everything else seems to be ok.
I see and hear many diesels as I am in the industry on the west coast designign liners for most internal combustion engines. Hard to compair to F**D and D***E because those things are just to loud in the first place.

Regards,
theNUT


_________________________________________
Check out the rides
<A HREF="http://members.aol.com:/sirnutimus/DURAMAX/MY-D-MAX.htm" TARGET=_blank>Heavy D & 8.1L CC Pics
</A>
_________________________________________
Nut Industries (http://www.nutindustries.com)


[This message has been edited by theNUT (edited 01-31-2002).]

hoot
01-31-2002, 10:07
Were getting closer to identifying the root cause of the ticking/popping noise. We've narrowed it down to two components

Ah hah..... It's caused by a root.

Sometimes you have to read between the lines.
http://www.62-65-dieselpage.com/ubb/wink.gif

------------------
Mike DP Member #2429
2001 2500HD GMC Duramax/Allison Summit White CC/SB Loaded
Amsoil Air Filter, Straight Piped PIC (http://uscom.com/~hoot/cars/duramax/gmc/exhaust/jvn03.jpg)
PS2K Propane, 22 Gal. LP Tank PIC (http://onramp.uscom.com/~hoot/cars/duramax/gmc/propane/bigtank1.jpg)
Allison Deep Pan, Transynd Syn ATF PIC (http://onramp.uscom.com/~hoot/cars/duramax/gmc/allison/)
SPA DG-111 Boost/EGT PIC (http://onramp.uscom.com/~hoot/cars/duramax/gmc/egt/), Nordskog Fuel Level, High Idle Switch PIC (http://onramp.uscom.com/~hoot/cars/duramax/gmc/gauges/pillar_w_idle.jpg)
VentShades, Husky Mudflaps, 255/85-R16 Dunlop Radial Rover RV's PIC (http://onramp.uscom.com/~hoot/cars/duramax/gmc/gmc2.jpg)
Kennedy Headlight Booster Kit TRUCK PICTURES CLICK HERE (http://onramp.uscom.com/~hoot/cars/duramax/gmc)
1994 K1500 Blazer 350 Loaded, Flowmaster duals

theNUT
01-31-2002, 11:07
I think we're going to need a dentist... http://www.62-65-dieselpage.com/ubb/biggrin.gif

theNUT


_________________________________________
Check out the rides
<A HREF="http://members.aol.com:/sirnutimus/DURAMAX/MY-D-MAX.htm" TARGET=_blank>Heavy D & 8.1L CC Pics
</A>
_________________________________________
Nut Industries (http://www.nutindustries.com)

BRYANGmc
01-31-2002, 19:17
HI everyone ! Newbie here. Ive been following the forum for some time..SIMPLY AWSOME. My '02 GMC 2500HD D/A has most of the problems you talk about. I'll start with the TICK ..mine is pretty loud. I'll get to the point, if you have the TICK, you should file a complaint with your dealer & GM. My dealer called GM for me and tech support said they are working on a fix..So the more of us who complain will hopefully get them to move on a solution. Anyways GREAT FORUM !!

hunter98
01-31-2002, 21:07
I got a TICKER! I don't know whether I was just to estatic about my new truck or what, but I didn't notice it until about 4K miles, now at 7K it is very loud. Pretty annoying, and yes you can hear the echos of this engine off of other cars at stoplights. I have heard other diesel engines on the farm make worse noises, and it is still pretty quiet for a diesel. I just wish that blasted tick would go away. If I remember right it is from idle to about 1200 RPM's.

Hopefully there is a fix, other than the tick, and that is not a really big issue, I love the truck.

Hunter

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2 :D :D 2 GMC SLE Ext Cab SB 4x4 Pewter/Graphite
Duramax/Allison/Eaton
Kelly AWR 255x85R16,
GM bedrail caps and folding cupholder, Husky Floormats
Westin CPS Nerf Bars

http://www.picturetrail.com/hunter98

Joe.G
02-01-2002, 19:08
Gee, I wish I knew if mine had a tick,I bought it in Feb of 2001 and it sounds like a quiet diesel to me. You have to understand that I am about 1/2 deaf, mine sounds as smooth as a gas engine running down the road. Do I need a rider with good hearing?

hoot
02-01-2002, 20:11
hunter98,

fagetaboutit

As with everyone else, no problems and it will disappear. Be patient.

I had it. I was upset. It eventually went away.

------------------
Mike DP Member #2429
2001 2500HD GMC Duramax/Allison Summit White CC/SB Loaded
Amsoil Air Filter, Straight Piped PIC (http://uscom.com/~hoot/cars/duramax/gmc/exhaust/jvn03.jpg)
PS2K Propane, 22 Gal. LP Tank PIC (http://onramp.uscom.com/~hoot/cars/duramax/gmc/propane/bigtank1.jpg)
Allison Deep Pan, Transynd Syn ATF PIC (http://onramp.uscom.com/~hoot/cars/duramax/gmc/allison/)
SPA DG-111 Boost/EGT PIC (http://onramp.uscom.com/~hoot/cars/duramax/gmc/egt/), Nordskog Fuel Level, High Idle Switch PIC (http://onramp.uscom.com/~hoot/cars/duramax/gmc/gauges/pillar_w_idle.jpg)
VentShades, Husky Mudflaps, 255/85-R16 Dunlop Radial Rover RV's PIC (http://onramp.uscom.com/~hoot/cars/duramax/gmc/gmc2.jpg)
Mag-Hytek Rear Dif Cover on the way.. PIC (http://www.wjsperformance.com/mag-hytec/differential_covers.htm)
Kennedy Headlight Booster Kit TRUCK PICTURES CLICK HERE (http://onramp.uscom.com/~hoot/cars/duramax/gmc)
1994 K1500 Blazer 350 Loaded, Flowmaster duals

BRYANGmc
02-04-2002, 19:50
This tick is driving me crazy... Just changed oil at 1500mi. ---now it's louder than ever! I used delvac 1300 15w-40. I called GM CUST. SERVICE and they assured me
that they are working on a solution. It's kind of funny that they can assure me that this "TICK" isn't hurting my engine but yet they don't know what it is. I will remain a thorn in there side until they fix it. JUST VENTING

hoot
02-04-2002, 20:18
It'll go away, relax. You won't need to get it fixed.

------------------
Mike DP Member #2429
2001 2500HD GMC Duramax/Allison Summit White CC/SB Loaded
Amsoil Air Filter, Straight Piped PIC (http://uscom.com/~hoot/cars/duramax/gmc/exhaust/jvn03.jpg)
PS2K Propane, 22 Gal. LP Tank PIC (http://onramp.uscom.com/~hoot/cars/duramax/gmc/propane/bigtank1.jpg)
Allison Deep Pan, Transynd Syn ATF PIC (http://onramp.uscom.com/~hoot/cars/duramax/gmc/allison/)
SPA DG-111 Boost/EGT PIC (http://onramp.uscom.com/~hoot/cars/duramax/gmc/egt/), Nordskog Fuel Level, High Idle Switch PIC (http://onramp.uscom.com/~hoot/cars/duramax/gmc/gauges/pillar_w_idle.jpg)
VentShades, Husky Mudflaps, 255/85-R16 Dunlop Radial Rover RV's PIC (http://onramp.uscom.com/~hoot/cars/duramax/gmc/gmc2.jpg)
Mag-Hytek Rear Dif Cover on the way.. PIC (http://www.wjsperformance.com/mag-hytec/differential_covers.htm)
Kennedy Headlight Booster Kit TRUCK PICTURES CLICK HERE (http://onramp.uscom.com/~hoot/cars/duramax/gmc)
1994 K1500 Blazer 350 Loaded, Flowmaster duals

BRYANGmc
02-05-2002, 05:09
I sure hope you're right Hoot. The worst part is dealing with non duramax owners that make sure to bring up the tick in conversation. Thanks for the reassurance though

redneckcowdoctor
02-05-2002, 06:01
I hit 30k yesterday and still ticking like a champ. When exactly does it go away? Truck runs great--quiet, powerful, excellent fuel economy, but that tick is like a dripping faucet--might not be causing any damage but it sure is annoying!

Joe Dawson
02-05-2002, 06:01
I had the tick in mine when it was new. By 10000 miles it was gone. I have over 30000 miles now and it hasn't returned.

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2001 GMC 2WD 2500 HD D/A CC Long Bed 6500 lbs.
AirLift Superlifts (http://www.airliftcompany.com/superduty.htm) , Lucerix Mirrors (http://www.lucerix.com/xmount.htm)
Fumoto Drain Valve (http://www.fumotovalve.com/merchant.cfm?id=88&step=2) , Delvac 1
Amsoil Dual Remote Oil Filter (http://www.pecuniary.com/synthetics/bypass/dualremote.html)
Chieftain Air Horns (http://www.campingworld.com/browse/skus/index.cfm?skunum=18009&src=SRCH&tcode=37)
53 Gal Fuel Tank Toolbox Combo (http://www.duallydepot.com/)
DTA Running Boards (http://www.dtacorp.com/index.htm)

2001 Sunnybrook 31ft. BWFS (http://www.sunnybrookrv.com/)
Precision Temp Tankless Water Heater (http://www.precisiontemp.com/RV-500Page1.html)
Jordon Ultima Controller (http://www.fortunecity.com/marina/finisterre/1228/jorjan/index.htm)
Honda EU 3000 Generator

theNUT
02-05-2002, 09:24
C A V I T A T I O N

in the oil system, near the oil pump impeller.


theconcernedNUT

hoot
02-05-2002, 09:50
Hey NUT,

Is this something new or just more of the same?

------------------
Mike DP Member #2429
2001 2500HD GMC Duramax/Allison Summit White CC/SB Loaded
Amsoil Air Filter, Straight Piped PIC (http://uscom.com/~hoot/cars/duramax/gmc/exhaust/jvn03.jpg)
PS2K Propane, 22 Gal. LP Tank PIC (http://onramp.uscom.com/~hoot/cars/duramax/gmc/propane/bigtank1.jpg)
Allison Deep Pan, Transynd Syn ATF PIC (http://onramp.uscom.com/~hoot/cars/duramax/gmc/allison/)
SPA DG-111 Boost/EGT PIC (http://onramp.uscom.com/~hoot/cars/duramax/gmc/egt/), Nordskog Fuel Level, High Idle Switch PIC (http://onramp.uscom.com/~hoot/cars/duramax/gmc/gauges/pillar_w_idle.jpg)
VentShades, Husky Mudflaps, 255/85-R16 Dunlop Radial Rover RV's PIC (http://onramp.uscom.com/~hoot/cars/duramax/gmc/gmc2.jpg)
Mag-Hytek Rear Dif Cover on the way.. PIC (http://www.wjsperformance.com/mag-hytec/differential_covers.htm)
Kennedy Headlight Booster Kit TRUCK PICTURES CLICK HERE (http://onramp.uscom.com/~hoot/cars/duramax/gmc)
1994 K1500 Blazer 350 Loaded, Flowmaster duals

theNUT
02-05-2002, 10:39
Still the same.
I should add links to the existing posts on this topic.

theNUT

[This message has been edited by theNUT (edited 02-05-2002).]

Penngrovian
12-13-2002, 16:37
This is from the BD Power Brake GMC forum dated 12/01/02:

"I have worked for GM for 23 years. I own a 2002 GMC diesel. The noise in this eng is normal. What you are hearing is the oil passing through the block at the lower end.

The tolernaces in this eng is so precise that you are hearing the oil snapping through the bearings on compression stroke.

My truck does this, nothing to worry about."

Wally posted a similar explaination.

What do you think?

mackin
12-14-2002, 09:17
Penngrovian

Here is the offical statement......

TSB=&gt;Diesel Engine - Ticking Noise Explanation

File In Section: 06 - Engine/Propulsion System

Bulletin No.: 02-06-01-022

Date: May, 2002

INFORMATION
Subject:
Information on Engine Ticking

Models:
2001-2002 Chevrolet and GMC C/K Pickup Models with 6.6L Duramax(TM) Diesel Engine (VIN 1 - RPO LB7)

Some of the above vehicles may exhibit a random ticking noise that is most audible on an engine with a coolant temperature of 70

svpdiesel
12-14-2002, 11:46
Thanks, Mac
I have that random tick, and was starting to be concerned. It sounds like somebody left a nut floating around inside the motor, and it gets whacked around from time to time. The description in your bulletin fits it to a T. Not a rythmic sound, like a lifter, at all.
So, thanks for the info. I didn't need to go battle with the dealer for non-issue.
S

Penngrovian
12-14-2002, 13:09
Thank you Mackin, I had not seen this TSB.

AllData does not have '02 TSB's that I can access.

Do you have a way to get TSB's from GM or?? that I do not know about?

csimo
12-14-2002, 18:07
GM makes the statement that this condition has been present in diesel engines for over 20 years, but since the Duramax is so quiet you can hear it.

If that's the case then the new Cummins should tick as well. Their engine is quieter than the Duramax. I've driven a couple of them, and my neighbor has one and none tick.

Kind of proves GM's statement is a bunch of BS.

3176CATPOWER
12-14-2002, 21:06
In addition to what csimo says,why is the tick non- existant in almost all engines until the first oil change?I listened for the tick since the day I got my truck wondering what it would actually sound like,at the first oil change I did not have to wonder any more.Anybody that says the tick was there all the time is full of you know what.My tick still comes and goes,changing oil to Delvac synthetic and pre-filling filter did not cure it.I do not pay much attention to it anymore but still wonder why that first oil change brings it to light for most of us.Could it be that GM adds something to the oil to keep quiet at least till your down the road a ways?

mackin
12-15-2002, 08:00
Penngrovian

I was doing some pre spring cleaning on my computer and stumbled onto a few of these that were sent to me......I saved them and when something comes relevant I'll post them......Looking for anything in particular???? Check the NHTSA and if you see something let me know I'll see if I have it.....


I buy into the oil and tight bearing clearance as when I change my oil it will tick for about 100 miles and then it's gone till next time.....If a mechanical failure was to be inherited would the tick subside after a 100 miles, And reappear at next oil change?
Hopefully it's not a cover up but I doubt it....Cummins may have different specs as to oil pressure bearing race clearances to compare to the Duramax.....

Who really knows.......

MAC

[ 12-15-2002: Message edited by: mackin ]</p>

ChevysRus
12-15-2002, 11:11
It's just those 2 extra cylinders the DMAX has that the Cummins doesn't! The Tick is just those extra cylinders "laughing" at all the Wannabe's.


LOL ha ha ha tick,tick, tick, tick.........

Brad Pelot
12-16-2002, 14:42
Not all of these trucks start ticking at the first oil change. My 03 has ticked from day one. It is one of the loudest tickers I have heard.
On the contrary my 01 never ticked in 40000 miles.At least not that I noticed.

conradv
12-16-2002, 18:42
My 2003 ticked when it had 2.7 miles on it in the dealer's lot after it was unloaded from the truck. It's never quieted or gotten louder, and it doesn't matter if the engine is cold or hot. Oil change did nothing for the sound.

It just ticks.

deerhunter7
12-16-2002, 21:19
I have 13000 miles on mine and have not heard the tick for the last 2000 . Have been checking .Will have to see if it comes back after I change oil at 16000 . Using Shell Rotella 15-40 year around. :D