U1512 Chevrolet Tahoe III

No window on the specific side of the vehicle will operate if the open is before the first splice from the door module, and both DTC U1511 and U1512 should set. If open after the first splice, the individual window will be inoperative and a single DTC should set.

Conditions for Clearing the DTC

1. The current DTC will clear when the malfunction is no longer present.
2. A history DTC clears when the module ignition cycle counter reaches the reset threshold, without a repeat of the malfunction.

Diagnostic Aids

1. A window regulator motor may cause a short to the local interconnect network bus circuit, and will cause all windows on one side to be inoperative.
2. An open/high resistance between the door module and the first splice from the module will cause all windows on one side to be inoperative.
3. An open/high resistance between the window regulator motor and the first splice from the motor will cause only one window to be inoperative.

Reference Information

Schematic Reference

1. «Data Communication Schematics»(ref-364513-S03343694622010063000000)
2. «Instrument Cluster Schematics»(ref-364482-S13996749162010063000000)

Connector End View Reference

Component Connector End Views

Description and Operation

Data Link Communications Description and Operation

Electrical Information Reference

1. «Circuit Testing»(ref-364488-S04114729552010063000000)
2. «Connector Repairs»(ref-364488-S23771656832010063000000)
3. «Testing for Intermittent Conditions and Poor Connections»(ref-364488-S16423338542010063000000)
4. «Wiring Repairs»(ref-364488-S17530456672010063000000)

Scan Tool Reference

Control Module References for scan tool information