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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 75 (Diagnosis - VT25-E) >> Diagnostic Tests >> DTC P0606: TCM Internal Performance >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2003 Saturn Vue and 2002 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

This DTC may be set by an intermittent short or open in the battery circuit to the TCM. Inspect for an intermittent short to ground or open between underhood fuse block harness connector terminal D1 and TCM harness connector J1 terminal No. 20 by connecting a test light. Wiggle the harness while observing the test light to locate the fault. If no circuit problems are found, replace and reprogram the TCM. Also, check loose terminal connections.

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