Symptom Tests: Notes

NOTE: For connector terminal identification, see Fig 1 and Fig 2 . For terminal wire color identification, see WIRING DIAGRAMS . For speedometer testing, see Vehicle Speed Sensor (VSS) related codes in TESTS W/CODES article in ENGINE PERFORMANCE section.

CAUTION: When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION section before disconnecting battery.

Fig 1: Identifying Connector C1 Terminals

Courtesy of GENERAL MOTORS CORP.

Fig 2: Identifying Connector C2 Terminals

Courtesy of GENERAL MOTORS CORP.