H2 V8-6.2L (2008)
as needed.
3.
Check for a pinched/cut wiring harness where the transmission harness is attached to the transmission. The metal attachment clip may be cutting
into the harness and shorting the high speed GMLAN circuit to ground. (Location and style of clip is shown in photos above) Repair as needed.
4.
Check for chaffed or shorted wiring by the park brake bracket assembly to the left IP junction block.
5.
Inspect underneath the underhood bussed electrical center (UBEC) for pinch or chaffed wires on the UBEC support bracket.
6.
Check connector X1 (1) on the back of the left IP fuseblock for a loose connection. Reports from the field have found the connector not fully
seated and causing intermittent concerns. See photo above for location.
Warranty Information
For repairs performed under warranty, use the applicable published labor code and information.
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