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Home >> Pontiac >> 2008 >> Solstice GXP, Automatic >> Repair and Diagnosis >> Suspension >> Rear Suspension >> Suspension General Diagnosis >> Diagnostic Information & Procedures >> Trim Height Inspection >> D Height Measurement

D Height Measurement

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).
  2. Gently remove your hands.
  3. Allow the vehicle to settle into position.
  4. Repeat the jouncing operation 2 more times for a total of 3 times.
  5. Fig 1: View Of Ball Joint & Lower Control Arm Mounting Bolt.
    GM200752Courtesy of GENERAL MOTORS CORP.
  6. Measure the D height by measuring the bottom of the strut to the support surface forward of the mounting bolt.
  7. Push the rear bumper downward to 38 mm (1.5 in).
  8. Gently remove your hands.
  9. Allow the vehicle to settle into position.
  10. Repeat the jouncing operation 2 more times for a total of 3 times.
  11. Measure the D height dimension.
  12. The true D height dimension number is the average of the high and the low measurements. Refer to Trim Height Specifications .
  13. If these measurements are out of specifications, inspect for the following conditions:
    • Improper weight distribution
    • Collision damage
    • Worn or damaged suspension components