Sierra 3500 4WD V8-6.6L DSL Turbo VIN 2 (2004)
of the possible harness chafing/pinching.
Also, on any of the above listed vehicles, the PCM wiring harness may be chafing against the precharge pump bracket or the battery tray.
Correction
On RPO AN3 vehicles, inspect the routing of the seat wiring harness. Reroute the seat wiring harness and attaching harness fastener (1) to the opposite
side of the seat module bracket. Repair the harness as necessary. Refer to Wiring Repairs in the Wiring Systems sub-section of SI. The seat may have to
be removed for ease of access and proper repair of the wiring harness.
Inspect the routing of the PCM wiring harness at the precharge pump bracket and the battery tray. Repair the harness as necessary. Refer to Wiring
Repairs in the Wiring Systems sub-section of SI.
If any of the above conditions still remain after this repair, refer to SI for further diagnostic information.
Warranty Information
For vehicles repaired under warranty, use the table.
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