GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Chevrolet
🢒
1998
🢒
Astro - 2WD
🢒
Brakes
🢒 Antilock Brake System
Brakes
All Component Locator
ABS Components
Antilock Brake System Component Views
All Description and Operation
Abbreviations and Definitions
ABS Description
ABS Operation
Basic Knowledge Required
General System Description
Service Precautions
All Special Tools and Equipment
Special Tools
All Visual Identification
Antilock Brake System Connector End Views
Cleaning, Inspection, and Adjustment
Antilock Brake System Automated Bleed Procedure
Diagnostic Procedures
ABS Indicator Always On
ABS Indicator Inoperative
Diagnostic Trouble Codes
DTC C0221 or C021 RF Wheel Speed Sensor Circuit Open
DTC C0222 or C022 RF Wheel Speed Signal Missing
DTC C0223 or C023 RF Wheel Speed Signal Erratic
DTC C0225 or C025 LF Wheel Speed Sensor Circuit Open
DTC C0226 or C026 LF Wheel Speed Signal Missing
DTC C0227 or C027 LF Wheel Speed Signal Erratic
DTC C0229 or C029 Drop Out of Front Wheel Speed Signals
DTC C0235 or C035 Rear Wheel Speed Signal Circuit Open
DTC C0236 or C036 Rear Wheel Speed Signal Circuit Missing
DTC C0237 or C037 Rear Wheel Speed Signal Erratic
DTC C0238 or C038 Wheel Speed Mismatch
DTC C0241-C0254 or C041-C054 EBCM Control Valve Circuit
DTC C0265 or C0266 and C065 C066 EBCM Relay Circuit
DTC C0267 or C0268 and C067 or C068 Pump Motor Circuit Open/Shorted
DTC C0269 or C0274 and C069 or C074 Excessive Dump/Isolation Time
DTC C0271-C0273 or C071 or C073 EBCM Malfunction
DTC C0281 or C081 Brake Switch Circuit
DTC C0286 or C086 ABS Indicator Lamp Circuit Shorted to B+
DTC C0288 or C088 Brake Warning Lamp Circuit Shorted to B+
Electrical/Electronic Schematic Diagrams
ABS Schematic References
Antilock Brake System Schematic Icons
Antilock Brake System Schematics
Gas, Vacuum and Fluids Schematics and Diagrams
Brake Pressure Modulator Valve Hydraulic Flow Chart
General Diagnostic Information
Clearing DTCs
Diagnostic System Check
Diagnostic Trouble Code (DTC) List
Displaying Diagnostic Trouble Codes (DTC)
Intermittents and Poor Connections
Scan Tool Diagnostics
Self-Diagnostics
Mechanical Specifications
Fastener Tightening Specifications
Other Specifications
GM SPO Group Numbers
Removal, Installation, and Replacement
Brake Pressure Modulator Valve Replacement
Electronic Brake Control Module Replacement
Tube Adapter Replacement
Wheel Speed Sensor Replacement