Clunking Noise Problems of Chevrolet Silverado

#1. Vehicle accelerates when letting off gas, even while going uphill the vehicle will accelerate. You can go up a steep hill without touching the gas. Brought the vehicle to the dealership they replaced, the throttle body, gas pedal assembly. They reinstalled the original parts and told us that this was normal. We drove other 2011 chevy Silverado's which did not do the same thing. The dealership told us that all the 2011 chevy Silverado's accelerate on their own. #2. There is a clunking noise from the rear when driving over bumps. The dealership said this is normal backlash, and did not do anything.

See all problems of the 2011 Chevrolet Silverado 🔎.

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.

See all problems of the 1999 Chevrolet Silverado 🔎.

Truck has been shaking since we purchased it, the steering wheel @ 64mph. Also makes popping noise when you turn steering wheel. The engine has a miss, left rear window wont seal shut, rear seat makes a clunking noise when someone is siting on it while in it. Passenger window makes a loud noise when you roll it down, stain on cab of truck, scratch's on mirrors and on paint under drivers doors. Over spray on paint and on windows.