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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1843 (DTC INDEX)ANTI-LOCK BRAKE DTCS
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Anti-Lock Brake DTCS
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Anti-Lock Brake DTCS
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
ANTILOCK BRAKE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC C0035 or C0040 | Wheel Speed Sensor Circuit |
| DTC C0055 | Rear Wheel Speed Sensor Circuit |
| DTC C0110 | Pump Motor Circuit |
| DTC C0161 | Brake Switch Circuit |
| DTC C0201 | Antilock Brake System (ABS) Enable Relay Contact Circuit |
| DTC C0221, C0222, C0223, C0224, C0225, C0226, C0227 | Front Wheel Speed Sensor Circuit |
| DTC C0228 | Antilock Brake System (ABS) Channel in Release Too Long |
| DTC C0229 | Drop Out of Front Wheel Speed Signals |
| DTC C0235, C0236, C0237 or P0609 | Vehicle Speed Signal Circuit |
| DTC C0238 | Wheel Speed Mismatch |
| DTC C0241, C0242, C0243, C0244, C0245, C0246, C0247, C0248, C0249, C0250, C0251, C0252, C0253, C0254 (W/NW7) | EBCM Control Valve Circuit |
| DTC C0241, C0242, C0243, C0244, C0245, C0246, C0247, C0248, C0249, C0250, C0251, C0252, C0253, C0254 (W/O NW7) | EBCM Control Valve Circuit |
| DTC C0265 or C0266 | EBCM Relay Circuit |
| DTC C0267 or C0268 | Pump Motor Circuit Open/Shorted |
| DTC C0269 or C0274 | Excessive Dump/Isolation Time |
| DTC C0271, C0272, C0273, C0284 | EBCM Malfunction |
| DTC C0279 | Powertrain Configuration Not Valid |
| DTC C0281 | Brake Switch Circuit |
| DTC C0283 | Traction Switch Shorted to Ground |
| DTC C0287, P1644, or P1689 | Delivered Torque Circuit |
| DTC C0290 or C0292 | Lost Communications With PCM |
| DTC C0291 | Lost Communications With BCM |
| DTC C0297 | Powertrain Configuration Data Not Received |
| DTC C0298 or P0856 | Requested Torque Signal Circuit |
| DTC C0550 | ECU Malfunction |
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.