Newbie -- Problem with 03 TahoeZ

2k3TahoeZ · February 28, 2003

Hey All...

My truck, since I got it, has made a strange noise that I could not get an exceptable answer for from my dealership. When I first start it up and put it in drive, at 11 or 12 mph, there is a "whomping" noise that comes from underneath. I apologize for not being able to explain it any better than this. It only happens after first starting it up, and never when I put it back into park and then back into drive. My gut feeling is that it might be with the t-case.

The service manager took it out with me and told me that it was probably a solenoid doing a system check. Since it only happens at startup, it can't be too bad.

It would be great if any of you could lend some insight. Thanks.

-JM

BCNU · March 1, 2003

Go back to your dealer and have the service manager go for a ride with you in a new one like you have on their lot, when it dosen't make the same noise as yours tell him he has a problem to fix on yours. Good luck!

2k3TahoeZ · March 1, 2003

I already took the service manager for a ride in it and he knows that others don't make that noise. I was hoping someone on this board would know what the problem was so that I could take it back there knowing what they have to fix. It's like pulling teeth down there at the shop. If nothing pans out here, I am going to write to Chevy directly and see what I can get out of them.

Shaners · March 1, 2003

Will it make the noise if the truck is in 4wd?

Does it do it on both cold and warm starts?

2k3TahoeZ · March 16, 2003

It does it on warm starts, cold starts, 2wd, Auto, 4HI. I have not tested 4Low. It will only do it after being shut down. In other words, if I drive around, put it in park, keep the enigne going, drive around again, it will not repeat it. I have also noticed that it happens very consistently at around 11 mph.

Shaners · March 16, 2003

I have no clue what the problem is, but it certainly needs to be repaired.

Maybe you should make arrangements with the dealer to drop the truck off the next time the regional rep is in the area, and have him take it for a ride...

2k3TahoeZ · March 17, 2003

I am pretty sure that my next move is going to be contacting GM's corporate offices. The truck drives great and I have the 75,000 warranty on it, so I am not overly worried, but it is a major aggravation.

The dealership here also likes to void warranties for aftermarket parts, so I have a few issues that I need to have settled with Chevy. It's just a matter of finding the time.

Once, and if, it is settled, I'll report back with details as to what was making the noise. In the meantime, if anyone else has a clue, it sure would be appreciated.

HvyChevyZ71 · March 17, 2003

several people including my dad's 00 Z71, have had a "clunk" sound which was the slip yoke at the end of the driveshaft that feeds into the tcase, they greased it and it solved the problem, if your sound seem to be coming from the rear of the vehicle, this could be the problem.

2k3TahoeZ · March 17, 2003

It feels as if it is coming from the front of the truck. I can feel a slight vibration in the gas pedal when it happens.

*edit* HvyChevy...your truck looks bada$$ :thumb:

seadoons · March 24, 2003

Check slip-yoke joint. This made a popping noise/feel after I came to a full stop then took off again (it did it on takeoff) - they just lubricated it and it fixed it.