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 MANUALSCHEVROLET2002AVALANCHE 2500, RWDREPAIR AND DIAGNOSIS (SINGLE PAGE)BRAKESANTI-LOCK BRAKESANTI-LOCK BRAKE SYSTEM
2002 Chevrolet Avalanche 2500, RWD
Anti-Lock Brake System
2002 Chevrolet Avalanche 2500, RWDSECTION Anti-Lock Brake System
- Specifications
- Schematic & Routing Diagrams
- Component Locator
- Diagnostic Information & Procedures
- Diagnostic Starting Point - Anti-lock Brake System
- Diagnostic System Check - ABS
- Scan Tool Output Controls
- Scan Tool Data List (w/JL4)
- Scan Tool Data List (w/o JL4)
- Scan Tool Data Definitions (w/JL4)
- Scan Tool Data Definitions (w/o JL4)
- Diagnostic Trouble Code (DTC) List
- DTC C0201, C0202, C0203, C0204: Master Cylinder Pressure Sensor
- DTC C0205, C0206, C0207, C0208: Steering Wheel Position - (PWM) Signals
- DTC C0209, C0210, C0211, C0212: Yaw Rate Sensor Signals & Voltage
- DTC C0213, C0214, C0215, C0216: Lateral Accelerometer Signals
- DTC C0217, C0218, C0219, C0220: Longitudinal Accelerometer Signal Voltage
- DTC C0221, C0222, C0223, C0225, C0226, C0227: EBCM Detects Open Or Shorted Wheel Speed Sensor
- DTC C0229: EBCM Detects Erratic Signal From Wheel Speed Sensors
- DTC C0235, C0236, C0237 or P1504: EBCM (Erratic) Wheel Speed Signal & PCM (Low Voltage) Vehicle Speed Signal
- DTC C0238: EBCM Detects Erratic Wheel Speed Input
- DTC C0240-C0259: EBCM Detects Internal Malfunctions
- DTC C0263: Brake Switch (Closed)
- DTC C0265 or C0266 (w/JL4): EBCM (Internal Malfunction Detected)
- DTC C0265 or C0266 (w/o JL4): EBCM (Internal Malfunction Detected)
- DTC C0267 or C0268: EBCM Detects Open, Shorted, or Seized Pump Motor or Driver Circuit
- DTC C0269 or C0274: EBCM Is Commanding the Dump & Isolation Solenoids (ON)
- DTC C0271, C0272, C0273, C0284: EBCM Detects Internal Malfunction
- DTC C0275 or C0276: EBCM Detects Internal Malfunction
- DTC C0279: EBCM Receives Invalid Information From PCM
- DTC C0281: EBCM Detects Open or Shorted Brake Switch or Circuit
- DTC C0282, C0285, or C0286: MPA Switch Remains Closed, Open, or MPA Intermittent
- DTC C0283 (w/JL4): VSES Mode Switch Signal Detected as Excessively Low/High, or Detected as Pressed for 60 Sec.
- DTC C0283 (w/NW7): EBCM Detects Low Voltage on TCS Signal Circuit
- DTC C0287, P1644, or P1689: EBCM Receives Invalid Torque Signals & PCM Detects Invalid Torque Signal Voltage Delivered
- DTC C0288: EBCM Detects Sensor Supply Voltage Fluctuating
- DTC C0290 or C0292: EBCM Failed to Receive Serial Data from PCM
- DTC C0297: EBCM Failed to Receive Correct Serial Data from PCM
- DTC C0298 or P1571: PCM Receives Invalid Requested Torque Signal and PCM Lost Ability to Perform Traction Control
- Symptoms - Anti-lock Brake System
- ABS Indicator Always On
- ABS Indicator Inoperative
- Low Traction Indicator Always On (Except Escalade)
- Low Traction Indicator Always On (Escalade)
- Low Traction Indicator Inoperative (Except Escalade)
- Low Traction Indicator Inoperative (Escalade)
- Stability System Disabled Indicator Always On
- Traction Off Indicator Always On (Escalade)
- Traction Off Indicator Always On (Except Escalade)
- Traction Off Indicator Inoperative (Escalade)
- Traction Off Indicator Inoperative (Except Escalade)
- Repair Instructions
- ABS Automated Bleed Procedure (w/JL4)
- ABS Automated Bleed Procedure (w/o JL4)
- Electronic Brake Control Module (EBCM) Replacement (w/JL4)
- Electronic Brake Control Module (EBCM) Replacement (w/o JL4)
- Brake Pressure Modulator Valve (BPMV) Replacement (w/JL4)
- Brake Pressure Modulator Valve (BPMV) Replacement (w/o JL4)
- Brake Fluid Pressure Sensor Replacement
- Pressure Accumulator Switch Replacement
- Wheel Speed Sensor Replacement (2WD)
- Wheel Speed Sensor Replacement (4WD)
- Traction Control Switch Replacement (StabiliTrak)
- Traction Control Switch Replacement (Traction Control)
- Yaw Rate Sensor/Lateral Accelerometer Replacement
- Description & Operation
- ABS Description & Operation
- Notes
- Initialization Sequence
- Anti-lock Brake System
- Pressure Hold
- Pressure Decrease
- Pressure Increase
- Dynamic Rear Proportioning (DRP)
- Traction Control System (TCS)
- Vehicle Stability Enhancement System (VSES)
- Brake Warning Indicator
- ABS Indicator
- Traction Control Indicators (w/NW7)
- Stability System Indicators (JL4)
- ABS Description & Operation
- Special Tools & 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.