i have a rattling, clinking noise when i hit bumps. doesnt do it when driving down the road. 2002 gmc sierra 1/2 ton hit a bump coming to a stop sign it made the rattle sound even when i was almost completely stopped. took it to a mechanic and he found nothing.
Hello, it would help if you could give us an idea of where the noise may be coming from? Front, rear, steering column, dash other? GM has issued several service bulletins regarding different types of rattles and other noises, but it would help if we could narrow it down some. These bulletins may or may not apply to your vehicle, depending on the location and type of noise. Thanks
its hard for me to tell where its comming from because it only happens when im driving, if i had to guess i would say it is comming from either the front drivers side or the middle of the cab drivers side.
I am going to send you a bulletin, it may or may not help. But without being able to hear it to pin point the location it could be pretty hard to find. I will send you one that related to the front, but if you find that you can feel it in the steering or it only does it with the AC on or something on that order, let me know and I will send some others that may help. They even have one for rear springs making a slapping sound, but if you don't think it is coming from the rear, I will hold off on that one. So, take a look at what I am sending this time and lest me know if it sounds like it may be related to your problem or not. Thanks
This bulletin is being revised to update the correction and parts information. Please discard Corporate Bulletin Number 03-03-08-002A (Section 03 -- Suspension).
Some customers may comment on a rattle or squeak type noise coming from the front of the vehicle.
The front shock absorber plastic pilot ring may be wearing out, causing the shock to misalign in the insulator.
DO NOT replace the shock . Replace the lower portion, P/N 15834275 , of the upper insulator assembly using the procedure listed below. This new insulator has a taller plastic pilot ring that is attached to the metal sleeve to aid in the proper alignment of the insulators.
Important: Be sure to center the shock in the frame bracket and tighten the upper mounting nut when the vehicle is on the ground.
Insulator Asm. - Frt. S/ABS (Lower Part of Upper Insulator)
my first thought that it was between the cab and the box possibly the rear, i had someone else tell me they thought it was the intermediate steering shaft but there is nothing in the steering column and im not feeling it in the steering when im driving.
I am going to send you the one for the steering shaft. This is by far the most common problem on your particular model. I will also send the one on the rear springs, you may be able to tell just by looking at the pads on the springs. You may not always feel the problem with the steering shaft. Let me know. Thanks
This bulletin is being revised to update the repair procedure with a permanent fix. Please discard Corporate Bulletin Number 00-02-35-003L (Section 02 -- Steering).
Some customers may comment on a clunk-type noise coming from under the hood that also can be felt in the steering wheel. These conditions may be more noticeable when turning at low speeds on rough road surfaces.
Use the information below to help diagnose the source of the noise.
DON'T DO THIS
Replace the I-Shaft with P/N 19153614.
Do NOT lubricate or exercise the I-Shaft.
Replace the steering column upper intermediate shaft with an improved design shaft that will eliminate the clunk noise using the procedure listed below.
Notice: On the 2002 and later model year vehicles, the steering column LOCK was removed from the steering column. It is critical that the J 42640 - Steering column Anti-Rotation Pin is used when servicing steering columns on 2002 and later model year vehicles. Failure to use the J 42640 may result in damage to the SIR coil.
Tighten Tighten the bolt to 47 N·m (35 lb ft).
Tighten Tighten the bolt to 50 N·m (37 lb ft).
Tighten Tighten the nuts to 20 N·m (15 lb ft).
Shaft - Upper Intermediate Steering
Plus 40 years GM, over 30 certified with Chevrolet, ASE certified Master Tech. (Expired, Retired)
is this something that will do damage the longer it goes or do i have some time?
I am sure it is the kind of thing that will get worse as it goes, but I doubt that it would cause damage. Most of the time this kind of thing is more of an annoyance than anything else. But if it is going to cause any damage, I would think you would know it ahead of time because it will get to the point of being really severe in a hurry when it gets that far. Thanks a bunch for the accept and for using JA. If we can help further, just drop us a note.