Electronic Ignition System: Notes

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Suburban, and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Locating Camshaft Position Sensor

Courtesy of GENERAL MOTORS CORP.

Fig 2: Locating Crankshaft Position Sensor

Courtesy of GENERAL MOTORS CORP.

Fig 3: Ignition Coils No. 1, 3, 5 & 7 Electrical Schematic

Courtesy of GENERAL MOTORS CORP.

Fig 4: Ignition Coils No. 2, 4, 6 & 8 Electrical Schematic

Courtesy of GENERAL MOTORS CORP.

Fig 5: Camshaft Position, Crankshaft Position & Knock Sensors Electrical Schematic

Courtesy of GENERAL MOTORS CORP.