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 MANUALSCHEVROLET1996CHEVY VAN G30, VAN CARGO EXTENDED, 6.5 YREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLANTI-LOCK BRAKE SYSTEMDIAGNOSISRETRIEVING CODES
1996 Chevrolet Chevy Van G30, Van Cargo Extended, 6.5 Y
Retrieving Codes
1996 Chevrolet Chevy Van G30, Van Cargo Extended, 6.5 YSECTION Retrieving Codes
NOTE:
Perform FUNCTIONAL TEST under TROUBLE SHOOTING CHARTS .
- If using Tech 1 for retrieving codes, go to step 3). If using ANTI-LOCK light for retrieving codes, turn ignition on. Using a jumper wire, connect terminal "H" to terminal "A" in Data Link Connector (DLC). See Fig 1. System will repeat trouble code(s) as long as DLC terminals are connected.NOTE: The DLC may also be referred to as the Assembly Line Data Link (ALDL) connector. These 2 terms may be used interchangeably.
- Trouble codes will be displayed by a flashing ANTI-LOCK warning light. As an example, Code 25 would be displayed by ANTI-LOCK warning light flashing 2 times, followed by a pause, then flashing 5 more times. See 4WAL FAULT CODES table for diagnosis. If no fault codes are present, see 4WAL SYMPTOM DIAGNOSIS table.
- Turn ignition off. Connect Tech 1 to DLC. Access 4WAL brake trouble codes using Tech 1. Repair trouble codes in order they appear. See 4WAL FAULT CODES table for diagnosis. If no fault codes are present, see 4WAL SYMPTOM DIAGNOSIS table.
4WAL SYMPTOM DIAGNOSIS
| Symptom | See | ||
|---|---|---|---|
| Functional Test | Figure | ||
| ANTI-LOCK Light On | Figure | ||
| ANTI-LOCK Light Off (1) | Figure | ||
| Brake Pedal Pulses (1) | Figure | ||
| Wheel Pull During Hard Braking (1) | Figure | ||
|
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4WAL FAULT CODES
| DTC | See |
|---|---|
| 21 | Figure |
| 22 | Figure |
| 23 | Figure |
| 25 | Figure |
| 26 | Figure |
| 27 | Figure |
| 29 | Figure |
| 35 | Figure |
| 36 | Figure |
| 37 | Figure |
| 38 | Figure |
| 41-54 | Figure |
| 65 Or 66 | Figure |
| 67 Or 68 | Figure |
| 71-74 | Figure |
| 81 | Figure |
| 86 | Figure |
| 88 | Figure |
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.