Diagnostic Aids

When a shorted-to-ground condition exists in circuit 382 and the decklid/lift gate release has been requested, the BCM will attempt to switch circuit 382 to battery voltage. High current flow will result and the BCM will go into a protective state. The BCM output will not allow itself to be activated for as much as 3 minutes.
Inspect the wiring harness for damage. Inspect for broken or chafed insulation.
If a fault is suspected to be intermittent, wiggling the harness wiring may help in locating the fault.

Fig 1: Chart 8 Trunk Release Output Circuit Low

Courtesy of GENERAL MOTORS CORP.