GM Service Manual Online
For 1990-2009 cars only

Special Tools

CH-47960 Digital Angle Gage


Object Number: 1743092  Size: SH

Note: 

  1. Adjust settings in the following order:
  2.    • Camber (1)
       • Caster (2)
       • Toe
  3. Both cams affect caster to some extent, but the rear cam affects the camber eight times as much as it affects the caster. Set the camber first, then caster.

  1. Prepare the CH-47960 Digital Angle Gage for use by following this process:
  2. • Turn the unit on.
    • Choose driver or passenger side
    • Zero the sensor with the following procedure:

    Object Number: 1743093  Size: SH
       - Place the sensor on the alignment rack.
       - Choose the zero setting on the key pad and push enter.
  3. Program in the required offset of +3.70 degrees.

  4. Object Number: 1743100  Size: SH

    Note: Before installing the sensor to the knuckle, use a soft (nylon) bristle brush to clean debris from the gage holes. Do not use power tools or abrasives.

  5. Verify the locating pins are installed into the back of the sensor.

  6. Object Number: 1743096  Size: SH
  7. Loosen and adjust the locator pins and install the CH-47960 Gage to the rear knuckle gage holes.

  8. Object Number: 1743099  Size: SH

    Note: The larger bushing closest to the ball joint affects camber while the smaller bushing towards the front of the vehicle affects caster.

  9. Loosen the lower control arm cam bolt nuts.
  10. Rotate the cam bolts to the required camber setting (1). Maintain the camber settings while tightening the cam bolt nuts. Refer to Wheel Alignment Specifications.
  11. Rotate the cam bolts to the required caster setting (2). Maintain the caster settings while tightening the cam bolt nuts. Refer to Wheel Alignment Specifications.
  12. Caution: Refer to Fastener Caution in the Preface section.

  13. Maintain the caster or camber setting while tightening the cam bolt nuts to 165 N·m (122 lb ft).
  14. Re-check the caster and camber settings after tightening.
  15. Adjust the rear toe. Refer to Rear Toe Adjustment.