| Subject: |  Availability of Replacement Mirror Actuator | 
| Models: | 2004 Buick Rainier | 
 | 2002-2004 Chevrolet TrailBlazer, TrailBlazer
EXT | 
 | 2002-2004 GMC Envoy, Envoy XL | 
 | 2002-2003 Oldsmobile Bravada | 
 
A replacement mirror actuator is available for service. It is no longer necessary
to replace the mirror assembly for an actuator. Use the following procedure to replace
the actuator.
-  Rotate the mirror into the upward and outboard position. See the illustration
above.
 
- Position your fingers flat and insert them underneath
the raised corner. This will ensure that more surface of the mirror is used when removing
the glass. See the illustration above.
 
- Slowly but firmly lift the glass and backing plate from the actuator.
 
- Remove the wire harness from the glass if equipped with heated mirror
and turn signal.
 
- Remove the glass.
 
- Remove the three torque head screws from the actuator.
 
- Remove the actuator.
 
- Remove the wire harness from the actuator.
 
- Install the wire harness to the new actuator.
 
- Install the new actuator.
 
- Install the three torque head screws.
 
Tighten
Tighten the torque head screws to 10 N·m
(89 lb in).
- Install the wire harness if equipped with heated mirror and turn signal.
 
-  Line up the mirror back with the actuator. Press firmly in the center
of the glass using the palm of your hand . The mirror and backing plate will snap
onto the actuator.
 
- Make sure the mirror is locked in by lightly pulling on the mirror glass.
Check the operation of the mirror and clean the glass.
 
Parts Information
Part Number 
 | Description 
 | 
88944479 
 | Actuator 
 | 
Parts are expected to be available from GMSPO on September 24, 2003.
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation 
 | Description 
 | Labor Time 
 | 
B4160 
 | Motor, Electric Remote Control Mirror (RH) - Replace 
 | 0.2 hr 
 | 
B4161 
 | Motor, Electric Remote Control Mirror (LH) - Replace 
 | 0.2 hr 
 |