ELECTROCHROMIC REARVIEW MIRROR VIBRATION (REPLACE MIRROR). Cadillac Commercial Limo/Hearse Chassis 1993

For 1990-2009 cars

# ELECTROCHROMIC REARVIEW MIRROR VIBRATION (REPLACE MIRROR)

#### SUBJECT: ELECTROCHROMIC REARVIEW MIRROR (DD8) VIBRATION (REPLACE MIRROR)

#### VEHICLES AFFECTED: 1993 "C/E/K" MODELS

Some 1993 Eldorados built before VIN PU604954, Sevilles built before VIN PU808996, and DeVilles/Sixty Specials may exhibit a rear view mirror vibration when equipped with the electrochromicmirror (DD8). A mirror, if removed for some reason, may alsoexhibit a vibration upon reinstallation due to a loss of spring tension. The condition is more likely to occur on the STS, ETC,and Sixty Special vehicles due to their stiffer suspensions.

To repair a comment of electrochromic rear view mirror vibration, replace the mirror with new part number 25618599. The retention spring in the mirror base has been stiffened on this part providing a tighter fit to the mirror support to eliminate vibration.

#### Remove or Disconnect (Refer to Figure 1):

#### NOTICE: Do not use tools or other objects to pry mirror mount or mirror away from windshield. Use of tools may damage mirror mount, mirror, or windshield.

1. Electrical connectors at rear of mirror assembly.

2. Twist mirror to one side and use one hand to support edge of mirror against windshield.

3. Use other hand to pull mirror away from windshield with a quick jerk.

#### Install or Connect:

1. Position bottom of mirror mount against windshield at top of support.

2. Slide mount onto support keeping mount parallel to windshield.

3. As mount start to engage support, apply a force against support while maintaining a downward force until the mount snaps onto the support with an audible click: this operation will require at least 20 pounds of force.

4. Check to make sure mirror is securely attached by adjusting mirror in a normal up/down and side to side range.

5. Electrical connectors.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.