GM Service Manual Online
For 1990-2009 cars only

The following abbreviations are frequently used in this section:

    â€¢ A: Amps
    â€¢ ABS: Antilock Brake System
    â€¢ CKT: Circuit
    â€¢ DLC: Data Link Connector
    â€¢ DTC: Diagnostic Trouble Codes
    â€¢ DMM: Digital Multimeter
    â€¢ EBCM: Electronic Brake Control Module
    â€¢ ESB: Expansion Spring Brake
    â€¢ ETS: Enhanced Traction System
    â€¢ GND: Ground
    â€¢ IGN: Battery Voltage with Ignition to RUN position
    â€¢ Infinite: Open Circuit/Unmeasurable High Resistance
    â€¢ PCM: Powertrain Control Module
    â€¢ ohms: Ohms