Electrical - Intermittent Multiple Malfunctions
File In Section: 08 - Body and AccessoriesBulletin No.: 02-08-64-017
Date: August, 2002
TECHNICAL
Subject:
No Start, Service Engine Soon Lamp On, ABS Warning Light On, Air Bag Light On, DTCs Set, Various Door Electrical Functions Inoperative (Replace Driver and/or Passenger Door Harness and/or Repair Body Harness Connector)
Models:
2002 Chevrolet TrailBlazer, TrailBlazer EXT, TrailBlazer Export
2002 GMC Envoy, Envoy XL
2002 Oldsmobile Bravada
Built Prior to April, 2002
Condition
Some customers may comment that the vehicle will not start and/or any of the following door electrical functions may be inoperative:
^ Power Door Locks
^ Outside Mirrors
^ Memory Seat
^ Power Windows
^ Heated Front Seats
^ Door Audio Speaker
^ Liftgate
Some may comment that these conditions occur intermittently. Diagnosis of these conditions may also find that various Diagnostic Trouble Codes (DTCs) may be set.
Cause
Moisture intrusion through the passenger side and driver side front door-to-body harness inline connections.
Correction
Follow the recommended diagnostics/repair for the front door and body harness connectors listed below.
Driver Door
1. Inspect the driver door harness connector (9 or 11 wires depending on vehicle option content) and terminals (inline to body harness).
^ If the connector has 11 leads, then there is no issue. Proceed to Passenger Door.
^ If the connector has 9 leads, then verify that the three empty cavities of the plastic connector are properly blocked. If all three cavities are blocked, then there is no issue. Proceed to Passenger Door. If two cavities are open, then perform the following repair procedure.
- If there is no evidence of corrosion, clean the connector using an electrical contact cleaner and fill the two open/unblocked cavities using RTV.
- If the terminals or connector show signs of corrosion, replace the door harness. Refer to the Front Door Wiring Harness Replacement procedure in the Doors subsection of the Service Manual. Ensure the replacement door harness has unused cavities blocked.
2. Inspect the body harness connector (11 wires) and terminals (inline to driver door harness). If there is evidence of corrosion, replace the mating connector/leads on the body harness by splicing in the service pigtail, P/N 15306403, using the procedure listed below.
Passenger Door
1. Inspect the passenger door harness connector (9 wires) and terminals (inline to body harness).
^ If there is no evidence of corrosion, verify that the three empty cavities of the plastic connector are properly blocked. If two cavities are open, clean the connector using an electrical contact cleaner and fill the two open/unblocked cavities using RTV.
^ If the terminals or connector show signs of corrosion, replace the door harness. Refer to the Front Door Wiring Harness Replacement procedure in the Doors sub-section of the Service Manual. Ensure the replacement door harness has unused cavities blocked.
2. Inspect the body harness connector (9 wires) and terminals (inline to passenger door harness).
^ If there is no evidence of corrosion, verify that the three empty cavities of the plastic connector are properly blocked. If two cavities are open, clean the connector using an electrical contact cleaner and fill the two open/unblocked cavities using RTV.
^ If there is evidence of corrosion, replace the mating connector/leads on the body harness by splicing in the service pigtail, P/N 88953131, using the procedure listed below.
Service Pigtail Procedure
1. Remove the closeout/insulator panel.
2. Remove the door sill plate.
3. Pull back the carpet for access.
4. Remove the driver foot rest pad.
5. Release the harness to body clips.
6. Pull the existing body harness through the door jam and into the body.
7. Cut the existing harness and splice in the service pigtail. Refer to Wiring Repairs in the Wiring Systems sub-section of the Service Manual.
8. Feed the harness through the body and into the door jam.
9. Install the harness to body clips.
10. Install the driver foot rest pad.
11. Install the carpet in place.
12. Install the door sill plate.
13. Install the closeout/insulator panel.
Parts Information
Parts are expected to be available 8-22-2002 from GMSPO.
Warranty Information
For vehicles repaired under warranty, use the table.
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