1997 Chevrolet Corvette AutomaticFACTORY OEM SERVICE PROCEDURE

Left Front Power Window Inoperative

  1. Using scan tool, check LDCM history for DTCs. If DTC B2202, B2204 or B2274 is stored as history, go to applicable DTC. If no DTCs are stored, go to next step.
  2. Using scan tool, select LDCM and command left window up and down. If window operates as commanded, go to step 4). If window does not operate as commanded, go to next step.
  3. Turn ignition switch to OFF position. Disconnect left window motor connector. Turn ignition switch to RUN position. Connect test light between left window motor connector terminals "A" (Dark Blue wire) and "B" (Brown wire). Using scan tool, command left window UP and DOWN. If test light illuminates with each command, go to step 10). If test light does not illuminate with each command, go to next step 6).
  4. Using scan tool, select LDCM inputs and monitor driver window switch status. Depress left window switch to UP position. If scan tool displays driver window UP switch as ACTIVE, go to next step. If scan tool does not display driver window UP switch as ACTIVE, go to step 7).
  5. Using scan tool, select LDCM inputs and monitor driver window switch status. Depress left window switch to DOWN position. If scan tool displays driver window DOWN switch as ACTIVE, system is okay. If scan tool does not display driver window DOWN switch as ACTIVE, go to step 8).
  6. Repair open or short in Dark Blue or Brown wire between left power window motor and LDCM. After, repair go to step 12). If circuits are okay, go to step 10).
  7. Repair open in Brown or Black wire between LDCM and Left door power window switch. After repair, go to step 12). If circuits are okay, go to step 11).
  8. Repair open in Gray or Black wire between LDCM and left door power window switch. After repair, go to step 12). If circuits are okay, go to step 11).
  9. Replace left power window motor. See WINDOW MOTOR  under REMOVAL & INSTALLATION.
  10. Replace LDCM. See COMPONENT LOCATIONS  table.
  11. Replace left door switch assembly. See WINDOW SWITCH  under REMOVAL & INSTALLATION.
  12. Turn ignition switch to OFF position. Reconnect or install any connectors or components that were disconnected or removed. Turn ignition witch to ON position. Clear any DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES (DTCS)  . Recheck system operation.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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