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ground or an open/high resistance. If the circuit tests normal replace the BCM. 3. Ignition OFF, reconnect the sliding rear window switch and disconnect the appropriate sliding rear window relay. 4. Test for less than 1.0 ohm between the ground circuit terminal B2 and ground. If greater than the specified range, test the ground circuit for an open/high resistance. 5. Test for less than 1.0 ohm between the ground circuit terminal A1 and ground. If greater than the specified range, test the ground circuit for an open/high resistance. 6. Ignition ON, verify that a test lamp does not illuminate between the control circuit terminal C1 and ground. If the test lamp illuminates, test the control circuit for a short to voltage. 7. Verify that a test lamp illuminates between the B+ circuit terminal A2 and ground. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an 8. Connect a test lamp between the control circuit terminal C2 and the ground circuit terminal A1. 9. Command the power sliding window to OPEN and CLOSE by using the sliding rear window switch. The test lamp should turn ON and OFF when changing between the If the test lamp is always OFF, test the control circuit for a short to ground or an If the test lamp is always ON, test the control circuit for a short to voltage. If the 10. Install the appropriate sliding rear window relay. 11. Ignition OFF, disconnect the harness connector at the sliding rear window motor. 12. Ignition OFF, test for less than 5.0 ohms between the control circuit terminal A and ground. If greater than the specified range, test the control circuit for a short to voltage or an 13. Ignition OFF, test for less than 5.0 ohms between the control circuit terminal B and ground. If greater than the specified range, test the control circuit for a short to voltage or an 14. Connect a test lamp between control circuit terminal A and control circuit terminal B. 15. Ignition ON, command the sliding rear window to OPEN and CLOSE by using the sliding
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Fixed and Moveable Windows - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
rear window switch. The test lamp should turn ON when commanding the OPEN and If the test lamp is always OFF, test the control circuit for a short to ground. If the 16. If all circuits test normal, test or replace the sliding rear window motor. Component Testing Sliding Rear Window Switch Test 1. Ignition OFF, disconnect the harness connector at the sliding rear window switch. 2. Test for infinite resistance between the control terminals C and B and the voltage terminal A with the switch in the INACTIVE position. If less than the specified value, replace the sliding rear window switch. 3. Test for less than 2 ohms between the control terminal C and the voltage terminal A with the switch in the CLOSE position. If greater than the specified range, replace the sliding rear window switch. 4. Test for less than 2 ohms between the control terminal B and the voltage terminal A with the switch in the OPEN position. If greater than the specified range, replace the sliding rear window switch. Relay Test 1. Ignition OFF, disconnect the applicable relay. 2. Test for 60-200 ohms between terminals 85 and 86. If not within the specified range, replace the relay. 3. Test for infinite resistance between the following terminals: 30 and 86 30 and 87 30 and 85 85 and 87 If not the specified value, replace the relay. 4. Test for less than 2 ohms between terminals 30 and 87A. If greater than the specified range, replace the relay. 5. Install a 3-amp fused jumper wire between relay terminal 85 and 12 volts. Install a jumper wire between relay terminal 86 and ground. Test for less than 2 ohms of resistance between
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Fixed and Moveable Windows - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
terminals 30 and 87. If greater than the specified range, replace the relay. Sliding Rear Window Motor 1. Install a 25-amp fused jumper wire between the control terminal A and 12 volts. Momentarily install a jumper wire between the control terminal B and ground. The sliding If the function does not perform as specified, replace the sliding rear window motor. 2. Reverse the jumper wires; the sliding rear window motor should perform the CLOSE or OPEN function. If the function does not perform as specified, replace the sliding rear window motor. Repair Procedures Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Rear Sliding Window Module Replacement Relay Replacement (Attached to Wire Harness) or Relay Replacement (Within an Roof Console Replacement Control Module References for BCM replacement, setup and programming POWER WINDOWS MALFUNCTION (A31/AN3/DL3) Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach. Diagnostic Procedure Instructions provides an overview of each diagnostic category. Diagnostic Fault Information Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance Driver Door Switch B+ U0199 00 U0199 00 - - LR Window Switch B+ 1, 3 3 - - Passenger Door Switch B+ U0200 00 U0200 00 - - RR Window Switch B+ 2, 4 4 - -
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Fixed and Moveable Windows - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Circuit/System Description The driver and passenger door lock and side window switches are integrated control module Reference Information Power Window Switch Right B3823 00 B3823 00 B3823 00 - Power Window Switch Right B3822 00 B3822 00 B3822 00 - Power Window Switch Left B3820 00 B3820 00 B3820 00 - Power Window Switch Left B3819 00 B3819 00 B3819 00 - Power Window Lockout Left B3821 00 B3821 00 B3821 00 - Power Window Lockout Right B3824 00 B3824 00 B3824 00 - LR Window Motor Control 3 3 3 - Passenger Window Motor B3205 00 B3205 0B B3205 00 - RR Window Motor Control 4 4 4 - Driver Window Motor B3205 00 B3205 0B B3205 00 - LR Window Switch Ground - 3 3 - RR Window Switch Ground - 4 4 - Driver Door Switch Ground - U0199 00 1 - Passenger Door Switch - U0200 00 2 - 1. Driver Window Malfunction
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Fixed and Moveable Windows - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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