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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 20 (Theft Deterrent System) >> Diagnostic Tests >> DTC B2957: PASSLOCK(tm) SENSOR DATA CIRCUIT LOW >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2002 GMC Savana, 2002 Chevrolet Chevy Express, 2001 GMC Savana, and 2001 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

Use a scan tool in order to inspect Passlock(tm) data voltage and Passlock(tm) code. Inspect Passlock(tm) sensor harness for an intermittent or a short to battery. Perform tests while wiggling wiring. Following a repair, tamper timer needs 10 minutes in order to expire.

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