Bulletin No.: PIT6003
Published date: 04/19/2023

Preliminary Information
PIT6003 Diagnostic Tip: Removal And installation Of Outside
Rearview Mirror Glass When Installing GM Accessory Outside
Rearview Mirror Projection Lights
Models
Brand:

Model:

VIN:

Model Years:

from

to

Engine:

Transmissions:

GMC

HUMMER EV

2022 - 2023

All

All

All

All

GMC

HUMMER EV SUV

2024

All

All

All

All

Involved Region or Country North America

Condition

Many 2022-2023 HUMMER EVs
o er the GM Accessory Outside
Rearview Mirror Projection
Lights, which is an accessory
illumination package that
features an outside mirror with
a HUMMER EV projection logo
puddle lamp. When the vehicle
is unlocked, the HUMMER EV
logo illuminates on the ground
and provides illumination to
help to enter or exit the vehicle. (
See photo below )

Cause

The installation of the Outside
Rearview Mirror Projection
Lights on the HUMMER EV
requires the removal of the
outside rearview mirror glass.
Failure to remove the mirror
glass correctly can result in a
cracked mirror. In addition, if the
mirror glass is not reinstalled
properly, it may fall o or not tilt
correctly in any of the four
directions. Incorrect
reinstallation also may cause the
Side Blind Zone warning
indicator to not work correctly.

Correction:
Proper Removal and Installation

When removing the mirror glass, use a at-bladed trim stick
to carefully move the glass away from the housing. Next, with
a curved pick tool, reach behind the glass and release the
locking tab as shown.

Once the tab is depressed, the glass will release from the
actuator.

TIP: Before installation of the new mirror lamp, check the part
label for correct orientation (LH or RH) of the parts.
During reinstallation of the mirror glass, be sure the wiring
harness connectors are properly reconnected.
Additional care must be taken to ensure the anti-rattle tabs
are properly aligned with the mirror housing before seating
the mirror glass to the actuator. If the anti-rattle tabs are
bent, it may: cause the mirror to not tilt properly; lead to a
vibration while the vehicle is moving making the image appear
distorted; result in the mirror falling o the housing when the
door is closed.

During installation, carefully line up the anti-rattle tabs on the
mirror glass to the housing before fully seating the glass to
the actuator. Tilt the mirror in all four directions to con rm
proper operation. Rotating the glass will help identify any tabs
that are not aligned, which will restrict glass movement.

Line up the anti-rattle tabs on the mirror glass to the housing
as shown above.
Finally, take extra care when reconnecting the small 2-way
connectors that plug into the mirror glass. Be sure to fully
seat the connectors.
For more information, refer to Outside Rearview Mirror
Attachment Package Installation in the HUMMER EV Accessory
Installation Manual available in appropriate Service
Information.

Version History
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04/19/2023 - Created on.

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