To fix a noisy intermediate steering shaft in a GMC, replace the deficient GM stock shaft with an aftermarket intermediate steering shaft by Borgeson Universal or Dorman. The replacement intermediate shafts fit GM trucks such as the GMC Sierra, GMC 3500 and Chevrolet Silverado Z/71. The Borgeson replacement part uses a slotted double-D sliding joint, while the original GM part uses a splined engagement. Vehicle owners who replace the shaft with aftermarket parts report immediate improvement that lasts for years.
Borgeson constructs its intermediate steering shaft with a vibration damper and machined needle-bearing U-joints that have a history of longevity and durability. The aftermarket part weighs about 1.5 pounds more than the GM part and takes less than 30 minutes to install. After installation, GM truck owners notice a tighter, more solid steering wheel response. Drivers report that the groaning noises and annoying bump in the steering column and wheel disappear.
To install the Dorman intermediate steering shaft in a GMC vehicle such as a 2003 Sierra, the mechanic must unbolt and remove the gas pedal bracket and then remove the old shaft. The new shaft is a tight fit, and the mechanic may have to use a hammer to tap the shaft into place. Drivers report that replacing the shaft ends the noise problem, and more than three years and 30,000 miles later, the steering is still quiet.