Chart A-1 - No Trans/Service Engine Soon Light: Notes

Fig 1: Chart A-1 Component Diagram

Courtesy of GENERAL MOTORS CORP.

NOTE: Test numbers refer to numbers on diagnostic chart.

1. If ECM-B fuse is blown, refer to WIRING DIAGRAMS  at end of article to identify related circuits.
2. Using a 12-volt test light, connect clip end to 12 volts. Probe each PCM/TCM ground circuit and ensure continuity to ground is present.