GM Service Manual Online
For 1990-2009 cars only

Upper Outside Rearview Mirror Loose (Tighten Retaining Ring of Mirror Assembly)

Subject:Upper Outside Rearview Mirror Loose (Tighten Retaining Ring of Mirror Assembly)

Models:2003-2004 Chevrolet Kodiak C4500-C8500 Series Models
2003-2004 GMC Topkick C4500-C8500 Series Models
with Manual Mirror (RPO DB5), Manual Lighted Mirror (RPO DB7) or Manual Heated Mirror (RPO DB8)



Condition

Some customers may comment that the outside rearview mirror is loose or moves out of adjustment while driving the vehicle.

Cause

The mirror movement may be caused by insufficient friction between the inner and outer cups that retain the mirror.

Correction

DO NOT REPLACE THE MIRROR ASSEMBLY .

Follow the procedure outlined below to adjust the retaining ring, which will increase the friction between the inner and outer cups of the mirror assembly.


    Object Number: 803760  Size: SH
  1. Remove the black caps from the mirror bracket.
  2. Remove the nuts that retain the outside rearview bracket to the vehicle.
  3. If equipped with the lighted or heated mirror, disconnect the electrical connector.
  4. Remove the outside rearview mirror assembly/bracket from the vehicle.
  5. Remove the mirror glass assembly from the mirror housing by completing the following steps:
  6. 5.1. Insert your fingers as far as possible behind the mirror toward the center of the back.
    5.2. With force sufficient to disengage the snap-fits from the adjuster mechanism, pull the mirror back out of the housing.

    Object Number: 1457429  Size: MF
  7. Fit a 15 mm deep well socket over the pin of the mirror adjustment assembly. Hammer the retaining ring down until it measures a minimum distance of 14 mm (0.55 in) from the retaining ring to the chamfer of the pin (reference #1 in graphic). The retaining ring should be tight to move by hand.
  8. Align the mirror back into the adjuster mechanism. With the palm of the hand on the center of the glass, rotate the glass about the glass pivot until the engagement of the snap-fit hooks.
  9. Perform the following procedure in order to ensure the mirror glass is fully installed:
  10. 8.1. Place foam below the mirror assembly to catch the glass if the mirror should fall.
    8.2. Hold the assembly so that the mirror glass is face down. While taking care that the mirror housing is not scratched, slap the upward surface of the housing. The mirror glass should stay retained in the housing.
  11. If equipped with lighted or heated mirror, connect the electrical connector at the vehicle.
  12. Install the nuts that retain the mirror assembly/bracket to the vehicle.
  13. Tighten
    Tighten the nuts to 25 N·m (18 lb ft).

  14. Install the black caps that cover the mirror nuts.

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

B9701

OSRV Mirror - Retaining Ring LF - Adjust

0.3 hr

B9703

OSRV Mirror - Retaining Ring RH - Adjust

0.3 hr