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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 289 (Suspension System General Diagnosis) >> Diagnostic Information and Procedures >> Trim Height Inspection >> D Height Measurement

D Height Measurement

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
  1. Jounce the rear suspension of the vehicle by pushing the vehicle down and lifting up.
  2. Allow the vehicle to settle and take a measurement.
    3. Fig 1: Measuring Jounce Bumper Cup To Rear Axle Pad Height
    GM2549590Courtesy of GENERAL MOTORS CORP.
  3. 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 .
    4. Fig 2: Jounce Bumper Cup To Rear Axle Pad Height Measurement
    GM2550599Courtesy of GENERAL MOTORS CORP.
  4. 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 .
    5. Fig 3: Checking Jounce Bumper Cup To Rear Axle Pad Height
    GM2550839Courtesy of GENERAL MOTORS CORP.
  5. For the 2500/3500 Sierra/Silverado pick up trucks, measure the (D) height from the jounce bumper cup to the rear axle pad. Refer to Trim Height Specifications .
  6. If any of these measurements are out of specifications, inspect for the following conditions:
    • Worn or damaged suspension components
    • Collision damage
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