Five problems related to rear suspension have been reported for the 2000 GMC Sierra. The most recently reported issues are listed below.
Rear of vehicle clunks when stopping and upon moving forward from a stop. Third door used to access rear of vehicle does not latch during cold weather of 20 degress or lower.
Truck is 2000 ext cab lb 1/2 ton. On concrete fwys, at certain speeds, the truck "bounces" (not vibrates). The fwy I happen to drive to work always causes bouncing. I've changed shocks with no improvement. All new gm longbed (2500, chevys, etc) all have the same problem. You can see us all drive at specific speeds to avoid "bouncing". The dealer says I gotta live with this. I say "why".
Truck vibrates on acceleration from stop to 20mph.
Noise in rear suspension while accelerating and stopping. Vibration in steering wheel during a right bend in road. Also headlights dim and go back while driving.
Bad vibration in steering wheel and from rear of truck from 55mph to 75mph had rims changed due to chrome piting didn't fix problem. Dealer has no clue on problem.