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D Height Measurement

NOTE: The D height dimension measurement determines the proper rear end ride height. There is no adjustment procedure. Repair may require replacement of suspension components.
  1. With the vehicle on a flat surface, lift upward on the rear bumper 38 mm (1.5 in). Gently remove your hands. Allow the vehicle to settle into position. Repeat the jouncing operation 2 more times for a total of 3 times.
  2. Measure the D height by measuring the bottom of the strut to the support surface forward of the mounting bolt. See Fig 1 .
  3. Push the rear bumper downward to 38 mm (1.5 in). Gently remove your hands. Allow the vehicle to settle into position.
  4. Repeat the jouncing operation 2 more times for a total of 3 times. Measure the D height dimension. See Fig 1 .
  5. The true D height dimension number is the average of the high and the low measurements. Refer to TRIM HEIGHT SPECIFICATIONS  .
  6. If these measurements are out of specifications, inspect for improper weight distribution, collision damage, worn or damaged suspension components.
Fig 1: Measuring D Height
G00369467Courtesy of GENERAL MOTORS CORP.
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