Bulletin No.:

Service Bulletin

Date:

23-NA-009
February, 2023

TECHNICAL
Subject:

Brand:
BrightDrop

Broken/Damaged Low Frequency Antenna Covers in Rear Cargo Area

Model:

Model Year:
from

to

EV600

2022

2022

Zevo 600

2023

2023

Involved Region or Country

VIN:
from

Engine:

Transmission:

All

All

to

United States, Canada

Additional Options (RPOs)

Condition

6252194

Some customers may comment that the low frequency antenna covers, located in the
rear cargo area, may have become damaged during normal vehicle usage.
Cause

The cause of the condition can be attributed to the current location of the rear cargo area
antennas, which are mounted to the rear cargo wheel wells.

Correction

Following the steps in the Service Procedure below, Dealers are to relocate the
antennas, using new mounting brackets and reroute the existing antenna wire harnesses
to new locations, that will reduce that possibility of damage during vehicle usage.

Copyright 2023 General Motors LLC. All Rights Reserved.

Page 2

February, 2023

Service Procedure
Important: Service agents must comply with all
International, Federal, State, Provincial, and/or
Local laws applicable to the activities it performs
under this bulletin, including but not limited to
handling, deploying, preparing, classifying,
packaging, marking, labeling, and shipping
dangerous goods. In the event of a conflict between
the procedures set forth in this bulletin and the
laws that apply to your dealership, you must follow
those applicable laws.
Important: This technical service bulletin (TSB) can
only be completed by BrightDrop dealers or BrightDrop
certified repair facilities who have met all BrightDrop
specific training, tool and equipment requirements.
Repairs must be performed by a technician who has
successfully completed the required training.

Bulletin No.: 23-NA-009

Preliminary Steps
1. Check for DTC’s in the BCM that may be related to
the operation of the applicable interior, and/or,
passive entry vehicle functions. Address any
related DTC’s before proceeding to the Service
Procedure listed below.
2. Disengage the rear cargo antenna covers and
inspect both antennas for signs of damage. If
either antenna is damaged, new antenna(s) will be
required for the Service Procedure below

Antenna Bracket Removal and Mastic Patch install

6252195

200 mm (8 in) (1)
100 mm (4 in) (2)
140 mm (5.5 in) (3)
57 mm (2.25 in) (4)
Discard (5)

Bulletin No.: 23-NA-009

February, 2023

Page 3

1. Obtain the mastic patch (GM P/N 84190291) and
measure out the approximate dimensions, shown
above.
2. Using a pair of scissors, cut the mastic patch into
the specified dimensions.

5926080

Note: Set antennas aside in a safe and protected
environment. Care must be taken to not drop or
damage the antennas.
3. Remove both the low frequency antennas (1) from
BOTH the LH and RH antenna brackets. Refer to
Low Frequency Rear Compartment Antenna
Replacement, in SI.

6252196

Page 4

February, 2023

4. Using a trim tool, disengage each of the fasteners
(4 each side) securing the antenna brackets to the
BOTH the LH and RH wheel wells. Take care to not
damage/distort the wheel wells.
5. Discard the antenna brackets after removal.

Bulletin No.: 23-NA-009

Bracket Installation and Harness Routing –
Passenger Side

6252199

6252197

The completed rerouting should look like that shown in
the above graphic.

6. Using a trim tool, release both wire harness clips
(1) from the mounting points at BOTH the LH and
RH wheel wells.

6252200

6252198

7. Center the mastic patches over the 2 sets of holes
on BOTH the LH and RH wheel wells and press
firmly to fully seat the mastic matches in place.

45 mm (1.8 in) (1)
215 mm (8.5 in) (2)
38 mm (1.5 in) (3)

Bulletin No.: 23-NA-009

February, 2023

108 mm (4.25 in) (4)
1. Drill the new mounting bracket, and wire harness
support hole locations, then attach the bracket and
support, following the steps below and the
dimensions noted above:

Page 5

Note: It is only necessary to locate the dimensions of
the rear mounting hole, noted by arrow in graphic
above. The forward hole can be located and marked
using the new bracket as a template, when the rear
attachment point is placed in the newly drilled hole.
1.1. Starting at the RH side of the cargo area,
mark the new bracket rear mounting location,
using a punch and following the dimensions
(3) & (4) noted at the start of the procedure.

6252201

Note: Once drilled, the harness support hole (1) and
bracket holes (2) drilled locations should look like those
shown in the above graphic.
6262362

1.2. Using a drill stop set to 12.7 mm (0.50 in) and
a 17/64 in drill bit, drill the rear mounting hole.

6252202

6252203

Page 6

February, 2023

Bulletin No.: 23-NA-009

Important: The bracket must be positioned so the open area
of the bracket (1) is pointing toward the front of the vehicle to
allow for the antennae wiring harness to made with the
antenna.

1.3. Position the bracket so the rearward retainer
of the bracket is centered in the newly drilled
hole and mark the position of the forward
mounting hole. Ensure the bracket is
positioned so that it sits parallel with the
leading edge (2) of the lower roof rail and
mark the forward mounting hole.
1.4. Using a drill stop set to 12.7 mm (0.50 in) and
a 17/64 in drill bit, drill the forward
mounting hole.

6252206

1.7. Place the bracket (1) into the newly drilled
mounting holes and push firmly to secure the
bracket to the roof rail.
2. Disengage the harness retainers from the vertical
support rail, reroute the harness and install the
antenna, following the steps below:

6252201

1.5. Mark the position of the wire harness support
(1) using the dimensions (1) & (2) noted at the
start of the procedure.
1.6. Still using a drill stop set to 12.7 mm (0.50 in),
change the drill bit to 1/4 in and drill the
harness support mounting hole (1).

6252205

Important: The top 3 retainers (1) should remain secured to
the vertical support rail.

2.1. Starting from the floor area, disengage the
harness retainers from the vertical
support rail.

Bulletin No.: 23-NA-009

February, 2023

Note: The retainers that were disengaged from the
vertical support can be removed from the wire harness
and discarded.
2.2. Route the harness under the rear door track
and position the connector close to the newly
mounted antenna bracket.
2.3. Connect the antenna connector to the
antenna and firmly mount the antenna to the
newly mounted bracket. Ensure the antenna
is fully engaged to the retainers.

Page 7

Note: Ensure the harness is routed and secured so
that the harness does not make contact with any
surrounding components and does not create any
stress on the wires themselves.
2.6. Using standard tie straps, secure the
remaining upper section of the antenna wire
harness to the existing coax cable at each of
the coax mounting locations, shown above.
The zip ties securing the harness to the coax
should be placed as close as possible to the
existing locations as the coax retainers.

6252207
6252209

2.4. Install the tie strap with rose bud (GM PN
19130464) into the harness support mounting
hole (1).
2.5. Secure the antenna wiring harness onto the
tie strap, making sure the harness is not
pulling tightly on the antenna connector.

6252208

Note: Again, ensure the harness is routed and secured
so that the harness does not make contact with any
surrounding components and does not create any
stress on the wires themselves.
2.7. Using standard tie straps, secure the vertical
section of the antenna wire harness to the
existing antenna wiring harness at each of the
antenna wiring harness mounting locations,
shown above, as well as to the harness as it
routes behind the rear roll up door track.
2.8. Cut off all of the tie strap ends and ensure the
tie lock ends are positioned so they do not
contact or damage the wire harnesses or
nearby components.

Page 8

February, 2023

Bulletin No.: 23-NA-009

Bracket Installation and Harness Routing –
Driver Side

6262360

The completed rerouting should look like that shown in
the above graphics.

6252211

142 mm (5.6 in) (1)
45 mm (1.8 in) (2)
215 mm (8.5 in) (3)
45 mm (1.8 in) (4)

103 mm (4 in) (5)
180 mm (7 in) (6)

Bulletin No.: 23-NA-009

February, 2023

Page 9

1. Drill the new mounting bracket, and wire harness
support locations, then attach the bracket and
supports, following the steps below and the
dimensions noted above.
Note: It is only necessary to locate the dimensions of
the rear mounting hole noted by arrow in graphic
above. The forward hole can be located and marked
using the new bracket as a template, when the rear
attachment point is placed in the newly drilled hole.
1.1. Starting at the LH side of the cargo area, mark
the new bracket rear mounting location, using
a punch and following the dimensions (1) &
(2) noted above.
1.2. Using a drill stop set to 12.7 mm (0.50 in) and
a 17/64” 17/64 in drill bit, drill the rear
mounting hole.

6252213

1.5. Place the bracket into the newly drilled
mounting holes and push firmly to secure the
bracket to the roof rail

6252212

Note: The bracket much be positioned so the open
area of the bracket is pointing toward the front of the
vehicle to allow for the antennae wiring harness to
made with the antenna.
1.3. Position the bracket so the rearward retainer
of the bracket is centered in the newly drilled
hole and mark the position of the forward
Ensure the bracket is positioned so that it sits
parallel with the leading edge of the lower roof
rail and mark the forward mounting hole
1.4. Using a drill stop set to 12.7 mm (0.50 in) and
a 17/64 in drill bit, drill the forward
mounting hole.

6252223

1.6. Mark the position of the wire harness
supports (1) using the dimensions (3), (4), (5)
& (6) noted at the start of the procedure.
1.7. Using a drill stop set to 12.7 mm (0.50 in)
change the drill bit to 1/4 in and drill the 2
harness support mounting holes (1)

Page 10

February, 2023

Bulletin No.: 23-NA-009

2. Disengage the harness retainers from the vertical
support rail, reroute the harness and install the
antenna, following the steps below:

6262363

6252214

Note: The retainers that were disengaged from the
vertical support can be removed from both the wire
harness and body, and then discarded.
2.1. Starting from the floor area, disengage all of
the harness retainers from the vertical
support rail.

2.2. Disengage the wire harness retainers from
the upper roof rail at the locations shown
above.
2.3. Route the harness under the rear door track
and position the connector close to the newly
mounted antenna bracket.
2.4. Connect the antenna connector to the
antenna and firmly mount the antenna to the
newly mounted bracket. Ensure the antenna
is fully engaged to the retainers.

6252215
6252217

2.5. Install the tie straps with rose buds (GM P/N
19130464) into the harness support mounting
holes (1).
2.6. Secure the antenna wiring harness onto the
tie straps, making sure the harness is not
pulling tightly on the antenna connector.

Bulletin No.: 23-NA-009

February, 2023

Page 11

Note: Ensure the harness is routed and secured so
that the harness does not contact any surrounding
components and does not create any stress on the
wires themselves.
2.8. Secure the remaining section of the antenna
wire harness to the existing harness at each
of the harness mounting locations using
standard tie straps. The tie straps securing
the wire harness should be placed as close
as possible to the existing wire harness
retainers.

6262359

2.7. Install 4 tie straps with rose buds into the
existing holes in the forward section of the
body (1) and then loop the wiring harness into
position.

6252221

2.9. Cut off all of the tie strap ends and ensure the
tie lock ends are positioned so they do not
contact or damage the wire harnesses or
nearby components.

Parts Information
Causal
Part

6252220

N/A

Description

Part
Number

Qty

DEADENER, RF
PNL FRT

84190291

1

BRACKET-IGN
LK KEY
XMTR ANT

22981745

2

STRAP, TIE, 7"
W/ROSEBUD

19130464

6

STRAP, TIE

11509086

19

Page 12

February, 2023

Bulletin No.: 23-NA-009

Warranty Information
For vehicles repaired under the Bumper-to-Bumper
coverage (Canada Base Warranty coverage), use the
following labor operation. Reference the Applicable
Warranties section of Investigate Vehicle History (IVH)
for coverage information.
Labor Operation

Description

Labor Time

6486218*

Relocate Both Low Frequency Rear Compartment Antenna
Modules

1.2 hr

*This is a unique Labor Operation for Bulletin use only.

Version

1

Modified

Released February 03, 2023

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these
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 your GM dealer for information on whether your vehicle may benefit from the
information.

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