Powertrain Control Module: Notes

WARNING: This page is about a different car, the 2003 GMC Sonoma and 2003 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: To identify circuits referenced in the following ground and power circuit tests, see Fig 1-Fig 4 .

Fig 1: Identifying PCM Harness Connector C1 Terminals (1 Of 2)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Identifying PCM Harness Connector C1 Terminals (2 Of 2)

Courtesy of GENERAL MOTORS CORP.

Fig 3: Identifying PCM Harness Connector C2 Terminals (1 Of 2)

Courtesy of GENERAL MOTORS CORP.

Fig 4: Identifying PCM Harness Connector C2 Terminals (2 Of 2)

Courtesy of GENERAL MOTORS CORP.