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 MANUALSCHEVROLET1995CAVALIER LS, 2D CONVERTIBLE, 2.2 4, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMEDOOR LOCKSANTI-THEFT SYSTEMTESTINGDIAGNOSTIC TROUBLE CODES (DTCS)DTCS 21, 22, 23 & 1601
1995 Chevrolet Cavalier LS, 2D Convertible, 2.2 4, Standard
DTCs 21, 22, 23 & 1601
1995 Chevrolet Cavalier LS, 2D Convertible, 2.2 4, StandardSECTION DTCs 21, 22, 23 & 1601
DTCs 21 and 1601 indicate loss of PCM serial data. DTC 22 indicates loss of SIR serial data. DTC 23 indicates loss of ABS serial data. See DATA LINK CONNECTOR in WIRING DIAGRAMS section.
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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.