GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2005 🢒 Grand Prix 🢒 Preface 🢒 Cautions and Notices 🢒 Cruise Control Schematics
Figure 1:

L26, L32
Object Number: 1457713 Size: FS
Master Electrical Component List
Cruise Control Description and Operation (3.8L)
Control Module References
LS4
ABS, TRANS, ECM IGN, AIRBAG/DISPLAY, COMPASS, HVAC Fuses and STRTR Relay
ABS, TRANS, ECM IGN, AIRBAG/DISPLAY, COMPASS, HVAC Fuses and STRTR Relay
Cruise Control Schematic Icons
Electronic Throttle Controls
Indicator, ABS, Stability, and Traction Controls
Data Link Communication
ABS, TRANS, ECM IGN, AIRBAG/DISPLAY, COMPASS, HVAC Fuses and STRTR Relay
Figure 2:

LS4
Object Number: 1558064 Size: FS
Master Electrical Component List
Cruise Control Description and Operation (5.3L)
Control Module References
Cruise Control
ABS, TRANS SOL, PCM, SIR, DISPLAY, CRUISE SW Fuses, and CRANK Relay
ABS, TRANS SOL, PCM, SIR, DISPLAY, CRUISE SW Fuses, and CRANK Relay
LS4
Indicator, ABS, Stability, and Traction Controls
Tap Shift Switches, Stop Lamp Signal, TFT Sensor and TCC, Shift Solenoids
VSS and AT ISS Sensors, Pressure Control Solenoid Valve, and TCC Release Switch
Electronic Throttle Controls
Cruise Control Schematic Icons
ABS, TRANS SOL, PCM, SIR, DISPLAY, CRUISE SW Fuses, and CRANK Relay