Hauling fully loaded can take a toll on your truck with the suspension getting pushed to the limit. Factory suspension was set up as the best way to cover the most bases between capability and comfort for those driving but with heavier loads it can stress out the suspension giving you excessive bounce, sagging height, and instability. Bring back the correct support for heavy loads on your GMC with PacBrake's Alpha  SD Air Suspension that can distribute weight correctly and stop over-loading the existing system.

PacBrake parts are quality made to last with aluminum end caps and nylon-reinforced rubber with all the durability and strength you need.