Measuring the P and R Heights

WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Checking P & R Dimensions

Courtesy of GENERAL MOTORS CORP.

NOTE: The left and right P and R height difference should be no more than 12 mm (0.47 in).

Use the following procedure to measure the P and R dimensions:

Lift the front bumper of the vehicle up about 38 mm (1.5 in).
Gently remove your hands and let the vehicle settle.
Repeat this operation 2 more times for a total of 3 times.
Measure vertically from the ground to the bottom lip of the wheel opening through the centerline of the front wheel, P height.
Push the front bumper of the vehicle down about 38 mm (1.5 in).
Gently remove your hands and let the vehicle settle.
Repeat this operation 2 more times for a total of 3 times.
Re-measure the P height as in step 4.
The true P height is the average of the measurements taken in steps 4 and 8. Refer to Trim Height Specifications .
Repeat the above steps at the rear of the vehicle for the R heights.
If the P and R heights are outside of specifications, measure the Z and D heights.