29540479 park neutral position/neutral start backup switch

[knotty buoy]

I've been coming to this site since before the 01MY trucks were launched. I just want to say thanks to everyone for taking the time to contribute to the site.

I had a second park neutral position/neutral start backup switch go bad last week. Based on what I read here, rather than going to the GM dealer, I went to an Allison dealer C&S Motors in Flint (very friendly folks) to get the part and replaced it this weekend. The part was under $50 + tax.

I also bought two spin on trans filters for under $15 (the same exact filter sold at the GM dealer for 15 each).

One note, the part on the truck was a replacement tan 29540479 park neutral position/neutral start backup switch that went bad. It was replaced by another tan/29540479 part.

I will buy another switch in the Fall since I am sure I will experience this again next winter.

Thanks again,

KB out

[madmatt]

GM reccomends installing front mud flaps if you don't already have them to prevent repeat failures and I use a ton of dielectric grease on the connectors and under the dust cover that goes aroud the selector shaft.

[More Power]

My '01 GMC still has the original black colored NSBU, which hasn't caused any sort of problem... yet.

I did install the tan version in Lil Red (http://www.thedieselpage.com/features/project2-16.htm) during the buildup (as seen in the NSBU article).

I wonder about some of the drive-thru car washes that use pressurized nozzles beneath the vehicle as a possible negative....

MP

[Turbo Al]

I have mud flaps (since day one) and am on my third NSBU switch in 32,000 miles, two black ones and just put a tan one in. I do a lot of offroad driving and do have a spare (new tan one), never been in a car wash but I am on the West Coast :D
Al

[knotty buoy]

Both the one previously installed and this one are packed with the dielectric grease.

This vehicle does not see any off roading, although there was a ton of snow packed under the truck after driving around in the snow storm Saturday.

Mainly use the quarter washes.

I will just buy another on in the fall to have on hand as a spare in case it fails again.

Thanks again for the additional suggestions.

KB out