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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 115 (Diagnosis - VT25-E) >> Diagnostic Tests >> DTC P0964: TCC Pc Solenoid Circuit Open >> Diagnostic Procedure

Diagnostic Procedure

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.
  1. Turn ignition on, engine running. Drive for a short distance. Using scan tool, monitor status of DTC P0964. Did last test fail? If so, go to next step. If not, problem is intermittent. See DIAGNOSTIC AIDS  .
  2. Turn ignition off. Disconnect transaxle 20-way harness connector. Connect test light between battery voltage and transaxle 20-way harness connector terminal No. 6. Turn ignition on, engine off. Is test light on? If so, go to next step. If not, go to step  7 .
  3. Measure voltage between transaxle 20-way harness connector terminal No. 7 and ground. What is the voltage value? If voltage is 2-6 volts, go to next step. If voltage is less than 2 volts, go to step  5 . If voltage is greater than 6 volts, go to step  6 .
  4. Inspect transaxle 20-way harness connector loose terminal connections. Repair as necessary. If okay, replace control solenoid valve assembly. See appropriate AUTOMATIC article in TRANSMISSION SERVICING.
  5. Inspect TCC PC solenoid high circuit (418) for an open, a short to ground and loose terminal connections at TCM. Repair as necessary. If okay, replace TCM. See TRANSAXLE CONTROL MODULE  under REMOVAL & INSTALLATION.
  6. Inspect TCC PC solenoid high circuit (418) for a short to voltage. Repair as necessary. If okay, replace TCM. See TRANSAXLE CONTROL MODULE  under REMOVAL & INSTALLATION.
  7. Connect test light between transaxle 20-way harness connector terminal No. 6 and ground. Is test light on? If so, go to next step. If not, go to step  9 .
  8. Inspect TCC PC solenoid low circuit (5500) for a short to voltage. Repair as necessary. If okay, replace TCM. See TRANSAXLE CONTROL MODULE  under REMOVAL & INSTALLATION.
  9. Inspect TCC PC solenoid low circuit (5500) for an open and loose terminal connections at TCM. Repair as necessary. If okay, replace TCM. See TRANSAXLE CONTROL MODULE  under REMOVAL & INSTALLATION.
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