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GMC Canyon 4WD V8-5.3L (2009)03 · Maintenance
03 · Maintenance

Alignment: Description and Operation (page 4 of 4)

Make
GMC
Model
Canyon 4WD
Engine
V8-5.3L
Year
2009
Section
Alignment
MaintenanceDescription and Operation · page 4 of 4
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1. For vehicles equipped with a torsion bar suspension turn the torsion bar adjuster bolt (1)  clockwise to raise the and counterclockwise to lower the

height adjustment. 

2. For vehicles without torsion bars, replace damaged or worn components as necessary.

D Height Measurement

Important:  The left and right D height difference should be no more than 12 mm (0.47 in.)

1. Lift the rear bumper of the vehicle up about 38 mm (1.5 in).
2. Gently remove your hands and let the vehicle settle.
3. Repeat this operation 2 more times for a total of 3 times.
4. D Height shall be measured as the perpendicular distance from the inside lip of the jounce bumper cup flange to the jounce bumper contact pad, or

top of the rear axle "tube" when a jounce bumper pad is not used.

5. Lift the rear bumper of the vehicle up about 38 mm (1.5 in).
6. Gently remove your hands and let the vehicle settle.
7. Repeat this operation 2 more times for a total of 3 times.
8. Re-measure the D height as in step 4.
9. The true D height is the average of the measurement from step 4 and step 8. Refer to Trim Height Specifications   (See: Specifications/Mechanical

Specifications/Suspension/System Specifications/Trim Height Specifications).

10. If these measurements are out of specifications, inspect for the following conditions:

*

Worn or damaged suspension components

*

Collision damage

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