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 MANUALSCHEVROLET1992CAVALIER RS, 2D CONVERTIBLE, 3.1 T, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 4 (ENGINE CONTROLS - TESTS W/CODES - 3.3L PFI)PCM/BCM CODE CHARTSCODE 39, TCC CKT USING TECH 1, W/4T60 TRANSAXLENOTES

1992 Chevrolet Cavalier RS, 2D Convertible, 3.1 T, Standard

Code 39, TCC CKT Using Tech 1, W/4T60 Transaxle: Notes

1992 Chevrolet Cavalier RS, 2D Convertible, 3.1 T, StandardSECTION Notes

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 1992 Pontiac Grand Am, 1992 Oldsmobile Cutlass Cruiser, 1992 Oldsmobile Cutlass Ciera, 1992 Oldsmobile Achieva, and 1992 Buick Skylark. However, it is still accessible from the selected car via links, so may be relevant.

Code 39 will set when Codes 28 and 29 are not set, brake is not applied, TCC is commanded by ECM, transmission is in high gear and engine speed-to-vehicle speed ratio does not indicate TCC has engaged. All these conditions must have been met for more than 15 seconds.

NOTE: Test numbers refer to numbers on diagnostic chart.

Tests fuse, brake switch and battery power circuit to TCC solenoid.
Tests for ECM driver operation at TCC harness connector.
Tests for ECM driver operation at ECM terminal.

RENDER: 1.0x

NO RELATED

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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.