Service Park Assist Message /Hands Free Lift Gate Inoperative – 2019 Chevrolet Blazer

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Bulletin No.: PIT5679
Published date: 05/3/2019
Preliminary Information
PIT5679 Service Park Assist Message /Hands Free Lift Gate Inoperative
Models

Brand: Model: Model Years:

VIN:
from to

Engine: Transmissions:

Chevrolet Blazer 2019 All All
All All

Involved Region or
Country North America

Additional Options (RPO)

Condition

UD7, TC2
A vehicle may be brought to the dealer with a “service park assist message” or a complaint that the
rear lift gate will not open passively. It may also be noted that the lift gate closure hands free
lamp is inoperative. Upon inspection codes B323A, B323B, B0958/B0959/B0960/B0961 may be found.

Cause Any of these issues could be caused by water intrusion in
the X400 connector.
Correction:
Inspect the X400 connector located behind the rear bumper cover on the left side of the vehicle
for evidence of water intrusion.
If no obvious terminal concerns are found it may be necessary to remove the TPA to be able
to view inside the connector for moisture.

If water intrusion or corrosion is found replace all affected terminals on the body side with
terminated leads and replace the rear fascia wiring harness.
Ensure that the connector is securely attached to the locating stud and is mounted in a horizontal
position.
If no evidence of terminal corrosion or water intrusion is found in the connector refer to SI for
diagnosis of the concern.
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
Inspection of X400 only- use standard labor time

6481978

for rear fascia removal to gain access .2
*This is a unique Labor Operation for Bulletin use only.
Version History
Version 1
Modified 05/03/2019 – Created on

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