Last post on May 14, 2002 at 3:59 AM
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Chevrolet Silverado 1500, Chevrolet Silverado 2500, Chevrolet Silverado 3500
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Jul 15, 2001 (4:14 pm)
I stand corrected. Here's the tsb for the spring insulators. Wish I could post the pictures with them but somehow the pics don't come through. Anyway, looks like your first diagnoses was correct.
1999 Chevy Truck C 1500 P/U 2WD V8-325 5.3L VIN T SFI
Top - Vehicle
Technical Service Bulletins
. All Technical Service Bulletins
. . Front Suspension Coil Spring Noise (New Insulator)
Front Suspension Coil Spring Noise (New Insulator)
File In Section:
03 - Suspension
Front Suspension Coil Spring Noise (Install New Coil Spring Insulator)
1999-2000 Chevrolet and GMC C/K Models (Silverado and Sierra 2WD 1500 Series)
This bulletin is being revised to update Model Year and Correction information and change the part number. Please discard Corporate Bulletin Number 99-03-08-002 (Section 03 - Suspension).
Some owners may comment about front suspension noise. The noise may be described as a "bong" or "clunk" noise. The noise may be more noticeable when driving slowly over bumps or backing the vehicle out of a driveway.
The front coil spring contacting the frame may cause this condition.
A new front coil spring insulator has been developed to correct this condition. Install a new insulator (1) to the top of both front coil springs. Refer to the Front Suspension subsection of the appropriate Silverado and Sierra Service Manual for coil spring removal/installation procedures.
This new insulator replaces any existing coil spring insulators. Remove and discard the existing insulator before installing the new insulator. Use the part number listed.
P/N Description Oty
15756770 Insulator, Front 2
Parts are currently available from GMSPO.
For vehicles repaired under warranty, use information shown in image.
#1030 of 2238 obyone
Jul 15, 2001 (5:42 pm)
Thank you very much for that info.
I will print it out and take it w/ me next week sometime.
How long do you think the work will take.
If it's like an hour, I'm thinking I will take my truck down there and just wait for it, so nothing else 'bad' will happen to it.
Jul 15, 2001 (8:37 pm)
It shouldn't take longer than a couple of hours. Then again it depends on when they actually start the work on your truck. I'd say you'd probably spend the good part of a day waiting for this one. Especially if the tech is reading the service manual while doing the job. What a thought!!
#1032 of 2238 Did I mention that you should
Jul 15, 2001 (8:39 pm)
have the clunk verified BEFORE leaving the dealership. Wouldn't want to return only to find..."UNABLE TO VERIFY" written on the work order.
#1033 of 2238 engine knock / nerd
Jul 16, 2001 (5:55 am)
My mechanic at the dealer told me that the new pistons will be out by December 2001. I was told by two mechanics from the dealer that I know very well that the pistons are not bad just shorter skirts and that is why they knock. Alot of GM cars do it. I was also given by GM a 100k warranty.
#1034 of 2238 Humming / Whistling noise
Jul 16, 2001 (6:08 am)
I own a 2001 Silverado 2500HD 4 door short bed. I often hear a humming or whistling noise at speeds of 55 or greater, I first thought it was just tire road hum, but it stays constant even as the road surface changes, wondering if anyone else has had or is having this problem?
#1035 of 2238 emergency brake and electric window problems
Jul 16, 2001 (9:12 am)
I recently went to get my 1999 silverado inspected and found out that my emergency brakes didn't work and had to get them repaired. about the same time my drivers side electric window went out and about 2-3 weeks later my passenger side window went out. shortly after i got this truck, both of the back quarter windows were leaking and this was fixed under waranty. anyone else experience any of these problems?
#1036 of 2238 emergency brakes
Jul 16, 2001 (9:14 am)
its not emergency brakes that your truck has.
Its parking brakes
Jul 16, 2001 (11:51 am)
My 99 Silverado had a bad parking brake also. The pedal would go to the floor and I could still drive off with the brake on.
When I went to adjust it, the adjuster was all the way already. Took it in to the dealer and they fixed it under warranty.
Jul 16, 2001 (7:47 pm)
Go easy on us old guys who remember when they really WERE EMERGENCY BRAKES!!