D Height Measurement
- Jounce the rear suspension of the vehicle by pushing the vehicle down and lifting up.
- Allow the vehicle to settle and take a measurement.
Courtesy of GENERAL MOTORS COMPANY
- For the Avalanche/Escalade/Tahoe/Suburban/Yukon vehicles, measure the (D) height from the jounce bumper cup to the rear axle pad. Refer to Trim Height Specifications .
Courtesy of GENERAL MOTORS COMPANY
- For the 1500 series Sierra/Denali/Silverado pick up trucks, measure the (D) height from the jounce bumper cup to the rear axle pad. Refer to Trim Height Specifications .
Courtesy of GENERAL MOTORS COMPANY
- For the 2500/3500 Sierra/Silverado pick up trucks, with press in jounce bumpers, measure the (D) height from the jounce bumper cup to the rear axle pad (shown above). For trucks equipped with bolt on jounce bumpers, measure the (D) height from the jounce bumper outboard flange to the rear axle pad (not shown). Refer to Trim Height Specifications .
- If any of these measurements are out of specifications, inspect for the following conditions:
- Worn or damaged suspension components
- Collision damage