Service Bulletin

Bulletin No.:

19-NA-107

Date:

June, 2020

TECHNICAL
Subject:

Extended Cab Rear Door Ajar Indicator Displayed Intermittently, Rear Door Hard to
Close and/or Rattle Noise from Lower Rear Door

Brand:

Model:

Chevrolet

Colorado (VIN S, VIN
T) (Extended Cab)

GMC

Canyon
(Extended Cab)

Model Year:
from

to

2015

2021

VIN:
from

Engine:

Transmission:

All

All

to

Involved Region or Country

United State, Canada, Mexico and GM Korea Company

Condition

Some customers may comment on one or more of the following conditions:
• Seeing their extended cab rear door ajar indicator displayed at intermittent times.
• Extended cab door hard to close.
• Rattle noise from the lower rear of the extended cab door.

Cause

The cause of the condition may be that either the upper or lower door latch is out of
adjustment.

Correction

Verify the Condition and repair as necessary, following the steps in the Service Procedure
below.

3. Open the same side extended rear door so now, as
shown in the graphic above, the extended cab door
should also appear ajar on the dash.
4. Starting with a low force, shut the extended cab
door several times. The first few tries should show
the door is still ajar.

Service Procedure
1. Open the front door on the affected side.
2. Turn the ignition key on, so that the front door
appears ajar on the dash.

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Copyright 2020 General Motors LLC. All Rights Reserved.

Page 2

June, 2020

5. Continue shutting the door, and gradually increase
the force until you reach the minimum force when
the rear door ajar lamp first turns off. The lamp is
now off as in the graphic example above.
6. Pull outboard on the top edge of the door to ensure
that the top latch is in primary position, and is
secure.
7. Pull outboard on the bottom edge of the door to
ensure the bottom latch is in primary position, and
is secure.
• If both latches are secure, with no cross-car
movement, NO further action is required.
• If the bottom edge is NOT secure, you will
notice movement (cross-car slack) and the ajar
lamp will intermittently go ON and OFF as you
move the door OUT and IN. If this condition still
exists, proceed to step #8.

Bulletin No.: 19-NA-107

Note: It’s important to maintain the latch orientation of
the striker, for easier latch engagement in step # 9.
8. Loosen the bottom striker bolts (1) and leverage
the striker wire to pull the striker (2) location
cross-car in the outboard direction, at least 2 mm
(0,08 in).
Note: The step below will avoid high closing efforts,
while maintaining the latch sequence of bottom - latch
> top - latch.
9. While the striker is still floating/loose, forcefully
shut the door in order to have the door drag the
striker into proper position.
10. Open the rear extended door and torque the 2
bolts at the bottom door striker.

Tighten
Tighten the bolts to 24 Y (18 lb ft).
Note: For proper repair, the bottom striker should
always latch ahead of the top striker, and you should
also experience low closing efforts.
11. To confirm the repair, repeat steps # 1– 7.

Parts Information
No parts are required for this repair.

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.

5335738

Labor Operation

Description

Labor Time

2081958*

Verify Secure Extended Cab Rear Door Latching

0.3 hr

Add

Extended Cab Rear Door Lower Latch Striker Adjustment

0.2 hr

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

Version

2

Modified

Released May 17, 2019
Revised June 11, 2020 — Added the 2020 and 2021 Model Years.

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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