Avalanche 4WD V8-5.3L (2011)
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 See: Specifications/Mechanical Specifications/Suspension/System Specifications/Trim Height Specifications.
6. If any of these measurements are out of specifications, inspect for the following conditions:
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Worn or damaged suspension components
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Collision damage