C 3500 Truck 2WD V8-6.6L DSL Turbo VIN 1 (2002)
7. Carefully bend up and backwards the FICM wiring harness electrical connectors (1) away from the FICM (4).
Note
Some of these chafes are very small, possibly the size of a pen tip, but could still cause injector circuit concerns.
8. Inspect the wiring harness for chafing (3) that may result from rubbing at the back of the alternator (2), the alternator bracket or at the FICM
harness retaining bracket.
If necessary, peel the tape from the area and look for ANY chafes into the wires.
^
If chafing is observed and the conductive portion of the wire IS NOT damaged, apply electrical tape around the wire.
^
If chafing is observed and the conductive portion of the wire IS damaged, then refer to Splicing Copper Wire Using Splice Sleeves in Wiring
Repairs in SI.
^
If chafing IS NOT OBSERVED, then refer to the appropriate DTC Diagnostic procedures in SI.
9. Connect the electrical connectors to the FICM.
10. Insulate the harness with suitable material such as conduit or heater hose to prevent a reoccurrence.
Note
For Silverado and Sierra models only perform Step 11.
11. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement in SI.
12. Clear the DTCs with a scan tool.
Warranty Information
For vehicles repaired under warranty, use the table above.
Disclaimer
