A Few Random Questions

hamilton318 · March 18, 2011

Hey guys, here's a list of a few random questions I've been thinking about over the past couple of weeks.

1. I have been hearing a sound from the front end of the truck whenever I'm in 2-hi. It seems to go away when I switch to Auto or 4-hi mode. It almost sounds like a tire is out of balance or something and is only noticeable at low (~35-45 mph) speeds. Kind of like a wah-wah-wah-wah sound (use your imagination). I've had the truck to the dealer twice and they have said they were unable to hear anything. Several other people who have ridden with me have noticed the same sound as I have though. Any ideas?

2. What is the correct part number for the navigation system that I would need for my truck (2010 Silverado LTZ Crewcab, OnStar, Bose, no rear enertainment)? I have seen part numbers 19244270 and 25966513, are either of these two correct?

3. Has anyone installed the rear backup camera kit you can get from the GM Accessories Zone (Here). I assume I would need part number 20906136 since I have the locking tailgate. Does anyone see any problems with me installing an after the fact factory navigation and using it to display an after the fact factory backup camera?

Thanks

Mckenzie · March 18, 2011

maybe a wheel bearing for number 1?

mastablasta · March 18, 2011

#2

Part Number: 19244270

Brand: GM

Navigation Radio Package Upgrade (w/ RPO Code UM7, USB, UUI, UUJ, UUN, U1C, UQA, UE1, w/o RPO Code HP2, U42) For Use w/o Rear Seat Entertainment System Application

No clue what that other part number is for. I saw it referenced as a dvd/nav unit, but I don't know what year or if it is for RSE. The one above is what I have that was installed when I bought it. 2010 Sierra, no Rear Seat Ent.

#3

20906136 is the rear-view camera for trucks WITHOUT tailgate lock.

20906135 is for trucks WITH locking tailgate.

Part Number: 20906135

Brand: GM

For Use on Vehicles w/ Locking Tailgate (w/ RPO Code A60, UE1, UUK, UUL, UVB, U3U, YE9)

You will need the nav unit in before you worry about this rear camera.

EDIT: I just noticed on your link that part number 20906136 says it is for trucks with locking tailgate, while the place I normally go to that my dealer gave me info on ( http://www.gm.oeaccessories.com/ ) says the opposite. 1 of them is wrong.

hamilton318 · March 18, 2011

Do you really think a wheel bearing could be going bad already? The truck only has a little more than 7k miles on it. Looks like I'll be taking it in to the dealership for the third time before too long then.

mastablasta, your truck does have the Bose system and USB port right? I'll definitely be getting the nav system before the camera, but I just wanted to see if there was any reason that the two wouldn't work together for some reason since they are an after the fact add on.

Thanks