Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2001CAVALIER LS, 2.4 TREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 4 (POWER WINDOW SYSTEM)DIAGNOSTIC TESTSDTC B2204: LEFT WINDOW DOWN SWITCH FAULT (LDCM)DIAGNOSTIC PROCEDURE
2001 Chevrolet Cavalier LS, 2.4 T
Diagnostic Procedure
2001 Chevrolet Cavalier LS, 2.4 TSECTION Diagnostic Procedure
WARNING: This page is about a different car, the 2000 Chevrolet Corvette and 1999 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
- Using scan tool, select LDCM input display and monitor left window status. If scan tool displays ACTIVE, go to next step. If scan tool does not display ACTIVE, go to step 6 .
- Disconnect master switch assembly. Using scan tool, select LDCM input display and monitor left side window switch status. If scan tool displays ACTIVE, go to next step. If scan tool displays INACTIVE, go to step 4 .
- Check for short to ground in Gray wire between master switch assembly and LDCM. If circuit is okay, go to step 5 . If circuit is not okay, repair as necessary. Then go to step 8 .
- Replace master switch assembly. See WINDOW SWITCH under REMOVAL & INSTALLATION. After repair, go to step 8 .
- Replace LDCM. See DOOR CONTROL MODULE (DCM) under REMOVAL & INSTALLATION. On hardtop models, using scan tool, select LH DCM. Select DCM REPROGRAM. Follow scan tool instructions. On all models, after repair, go to step 8 .
- Check left window switch down circuit for intermittent malfunction. See DIAGNOSTIC AIDS . If problem is found and repaired, go to step 8 . If no problem is found, go to next step.
- Turn ignition switch to OFF position. Reconnect or install any connectors or components that were disconnected or removed. Clear any DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES (DTCS) under SELF-DIAGNOSTIC SYSTEM. Wait 20 seconds. Check for DTCs. If DTC B2204 sets as history again, go to step 5 . If DTC B2204 does not reset, system is okay.
- Turn ignition switch to OFF position. Reconnect or install any connectors or components that were disconnected or removed. Turn ignition switch to RUN position. Clear any DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES (DTCS) under SELF-DIAGNOSTIC SYSTEM. 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.