I was driving to my home from work when I noticed an excessive knocking sound coming from the front of the truck. I pulled into my driveway looked at the front suspension and around both tires. That's when I saw that the passenger side front upper shock mount had broken free from the frame. The shock was just banging freely against the frame. The truck is 15 years old so I know its not under warranty, but that's just poor construction. The truck has been my daily driver and has never been offroad. Judging from the other complaints regarding the frame cracking and/or breaking that I've read, I'm assuming GM isn't going to do anything about it. It's just sad. Regardless, I think NHTSA should issue a recall because this is a safety concern. The excess bounce can cause the driver to lose control of the vehicle.

- Virginia Beach, VA, USA

I own a 1999 Silverado ext cab 4X4 and the frame is rot in many different places the driver and passenger mid sections are half gone and now the rear sections under the bed are rotting to the point to where the is no good metal left the bed buckled and is hitting the cab the rest of this vehicle is in very good condition but the frame is gone.

- Erie, PA, USA

Hello im reporting a problem I have noticed about rust on the under bodies of the Chevy and GMC pick ups. It is a widespread problem and needs to be resolved. There are too many vehicles reporting this problem to make it a coincidence. I myself have this problem where my frame has now cracked for the second time. People are complaining more and more and our safety is at stake. Please whatever can be done to bring GM to recognize this problem can and will save a lot of lives as well as hundreds of thousands of dollars. Thank you

- Union , NJ, USA

After turning the vehicle off consumer heard humming sound coming from under the vehicle. The humming continued until the battery was disconnected.

- Kent, WA, USA

The front end of the vehicle vibrated at any speed, which made it difficult to control vehicle, the vehicle was service 8 times, with no remedy.

- Westport, CT, USA

Consumer states after installing trailmaster suspension lift kit, the vehicle wanders when hitting bumps, the steering is hard to control, there is excessive tire wear and the steering stabilizers have worn out. An alignment was performed and tires were balance, but problem still exist. Manufacturer notified.

- Tyrone, PA, USA

Whenever turning a corner or hitting a bump or crack in road, steering would make clunking noise. Have been to the dealership 3 times, but mechanic could not locate or resolve problem.

- Bozeman, MT, USA

Intermittently when making a left or right hand turn vehicle will lose rpms and acceleration power which has caused crash. Only way to regain power back is by straightening steering wheel. Dealer cannot determine cause of defect.

- Charleston, WV, USA

The vehicle rattles going over small bumps.

- New Iberia, LA, USA

Vehicle vibrates while driving at speeds over 60 mph, dealer has been unable to correct the problem

- Richwood, TX, USA

Steering wheel vibrates at 58-70. Dealer changed tires 4 times, rims twice. Three sets Goodyear and one of general tire. Took to dealer 7 times. Dealer and manufacturer say this is normal operation.

- Concord, CA, USA

Vibration throughtout vehicle.( dot number: W273wma029 tire size: P265/75R16 )

- Coker, AL, USA

The truck has a vibration under the seat at speed of 40 mph.

- Underhill, VT, USA

Vehicle has a vibration/noise from 40mph to interstate speeds. More noticeable with load in cargo area, or 2 passengers in rear seat. Vehicle has been taken to dealership 3 times. Undetermined vibration. Last time vehicle taken in, dealership removed/adjusted/reinstalled dashboard(alleged cause of problem). No fix. Now has wind noise from windhield area at highway speeds. Tires have been rotated, still has noise/vibration at highway speeds. Steering wheel vibrates(shimmies) at highway speeds.

- Del Rio, TX, USA

Intermitent vibration between 45 & 75. New tires have not corrected problem.

- Redding, CA, USA

Knocking and vibration in steering column. Dealer twice to fix not fixed yet.

- Mccloud, CA, USA

While driving there is a lot of vibration & noise coming from steering wheel, mainly while turning or braking, speed was not a factor. Took vehicle back to dealership for correction, but was informed by mechanic that it couldn't be repaired. Took vehicle back a second time and grease was repacked in the lower unit to temporarily fix the problem.

- Manito, IL, USA

While driving over 60 mph vehicle has hard vibration which may result in loss of vehicle control. Or over time may lose any important parts. Been to dealer 3 times, and dealer replaced tires. Dealer could not determine the cause of the problem.

- Queensbury, NY, USA

60-75mph vibration, steering knock, rear end rattle

- Penn Yan, NY, USA

Vehicle shakes excessively at 60mph. Dealer has not seen vehicle.

- Jacksonville, FL, USA