Vin# 1gchk23143f168478 Check Please!!!

Hello i am new here, but have been reading here for awhile. this forum has the best info out there. money cant buy info. this good! i just recently purchased a 2003 hd2500 dmax w/ the lb7 motor. a couple off days later i crawled under it and noticed some big holes in the transmisson tunnel. i think it has been converted from a manual to a allison auto??? you cant see these holes from in the cab because they put new carpet in the front to cover them. could someone please do a vin# check to provide me w/ a build sheet and any info they can. VIN# 1GCHK23143F168478

Welcome aboard!

You don't need a VIN check. In the glove box is a sticker with a bunch of codes on it. These are the RPO codes (Regular Production Options), and will tell you a lot more than a VIN check. The tranny code begins with an "M". List all the "M" codes and we can tell you what it came with.

That said, holes in the tranny tunnel does not mean it's been switched. GM tools the tunnel die for both tranny options, and covers the holes as appropriate. It isn't likely the tranny has been switched, but there would be several other indicators if it had been. I think I'd be more concerned with the reason for the carpet replacement (flood, etc).

M74 is the only m-code in the glove box. i greatly appreciate your help. what code would tell me if the truck has been switched from a maual shift transfer case to a push button? there is a 6x6 hole on the drivers side of the trans. tunnel. it is exposeed and still has black gasket material around it?

just VIS'd it. It came factory w/ the Allison and the push button t-case.

Ae7 - 40/20/40 Split Bench Seat With Front Leather Seating Surfaces Am7 - Folding Rear Seat
Au0 - Keyless Remote Door Lock Au3 - Power Door Lock System
A31 - Power Windows B30 - Wheelhousing & Floor Carpeting
B32 - Front Color-keyed Floor Mats B33 - Rear Color Keyed Floor Mats
B71 - Wheel Opening Flares B85 - Bright Body Side Moldings
Cj3 - Air Cond., Dual Zone Manual (replaces Air Cond. In Pkg) Cmd - Assembly Plant - Flint, Mi
C49 - Electric Rear Window Defogger C6w - Gvw Rating - 9,200 Lbs
Df5 - Isrv Mirror W/compass & Temp Dk7 - Interior Custom Roof Console
Dl3 - Osrv Mirror W/driver Side Auto Dimming, Pwr Fold & Adj, Heat, Turn Signal E63 - Fleetside Body
Fe9 - Federal/ny/vt Emissions Ft2 - Arm Tors Bar Spring Adj
Ft3 - Arm Tors Bar Spring Adj Gt4 - Rear Axle - 3.73 Ratio
G80 - Locking Differential-rear Axle Hvy - Iden 2 Inch Body Raise,hd Model
Jh6 - 4 Wheel Power Disc Brakes, Hd Kc4 - Engine Oil Cooling System
Knp - Hd Aux Transmission Cooling Sys Kup - Throttle Control Electronic
K05 - Engine Block Heater K34 - Cruise Control
K47 - High Capacity Air Cleaner K68 - 105 Amp Delcotron Generator
Lb7 - Duramax Diesel 6600 V8 Engine M74 - Allison 5 Spd Automatic Trans
Nf2 - Federal Emission System Np1 - Electronic Shift Transfer Case
Np5 - Leather Wrapped Steering Wheel Pdd - Color-keyed Carpet
Py0 - Polished Aluminum Wheels Qiz - Lt245/75r16/e Als Bw Tires
R9z - Poms Expedite-sold Orders Slm - Stock Orders
Tq3 - Battery 770 Cca (dual) Tr3 - Chrome Grille
T96 - Front Fog Lamps Ub0 - Am/fm Stereo W/cd Player
Uq3 - Enhanced Audio Speakers Vb3 - Chrome Rear Step Bumper
Vg3 - Front Deluxe Chromed Bumper Vk3 - Front License Plate Mount
Vr4 - Weight Distrib. Platform Hitch Vxs - Complete Vehicle Label
V10 - Cold-climate Package V73 - Statement Of Vehicle Cert.-u.s. /canada
Xhh - Lt245/75r16/e Als Bw Tires-frnt X88 - Chevrolet Conversion
Yd3 - Base Equip For Sch Gvw Pl-ft Ax Yd6 - Base Rear Spring
Ye9 - Silverado Yhh - Lt245/75r16/e Als Bw Tires-rear
Zhh - Lt245/75r16/e Als Bw Spare Tire Zy1 - Solid Paint
Z82 - Heavy Duty Trailering Equipment Z85 - Heavy Duty Suspension
1sb - Ls Decor Includes: * Air Cond, Dual Zone Manual * Dual Pwr Heated Osrv Mirrors * Rear Window Defogger * Am/fm Stereo W/cd Player * Chrome Styled Steel Wheels * Electronic Speed Control * Power Locks & Windows * Remote Keyless Entry With Content Theft Alarm * Isrv Mirror W/compass &temp * Leather Wrapped Steering Whl * Body Side Moldings 1sz - Preferred Equipment Savings
6gl - Front Spring 62u - Dk Gray Metallic
69d - Dark Charcoal - Custom Cloth 69i - Dk Pewter Interior Trim
7gl - Front Spring

NP1 is electric shift and NP2 is the manual shift transfer case

everything checks out guys!!! what a relief!!! thank all of you. wonder what the heck there is a 6'x6' hole in my transmission tunnel for, i can't figure it out??:confused:

Snow plow equipment???

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Originally Posted by kawikid1425

everything checks out guys!!! what a relief!!! thank all of you. wonder what the heck there is a 6'x6' hole in my transmission tunnel for, i can't figure it out??:confused:

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To quickly dispose of the whiskey bottles when the cops pull you over...:D