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 MANUALSOLDSMOBILE2004BRAVADA RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1438 (ANTILOCK BRAKE SYSTEM)
2004 Oldsmobile Bravada RWD
Section 1438 (Antilock Brake System)
2004 Oldsmobile Bravada RWDSECTION Section 1438 (Antilock Brake System)
WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic and Routing Diagrams
- Component Locator
- Diagnostic Information and Procedures
- Diagnostic Starting Point - Antilock Brake System
- Diagnostic System Check - ABS
- Scan Tool Output Controls
- Scan Tool Data List
- Scan Tool Data Definitions
- Diagnostic Trouble Code (DTC) List
- DTC C0221 To C0227: Front Wheel Speed Sensor Circuit
- DTC C0229: Drop Out of Front Wheel Speed Signals
- DTC C0235 To C0237 or P0609: Rear Wheel Speed Sensor Circuit
- DTC C0238: Wheel Speed Mismatch
- DTC C0241 To C0254: 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 To 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 P1571: Powertrain Indicated Traction Control Malfunction
- Symptoms - Antilock Brake System
- ABS Indicator Always On
- ABS Indicator Inoperative
- Low Traction Indicator Always On
- Low Traction Indicator Inoperative
- Traction Off Indicator Always On (Except Bravada)
- Traction Off Indicator Always On (Bravada)
- Traction Off Indicator Inoperative
- Repair Instructions
- Description and Operation
- ABS Description and Operation
- Special Tools and Equipment
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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.