GM Service Manual Online
For 1990-2009 cars only
Figure 1:

L26, L32


Object Number: 1647568  Size: FS
Master Electrical Component List
Cruise Control Description and Operation (3.8L)
Control Module References
LS4
ABS, TRANS SOL, PCM, SIR, DISPLAY, CRUISE SW Fuses, and CRANK Relay
ABS, TRANS SOL, PCM, SIR, DISPLAY, CRUISE SW Fuses, and CRANK Relay
Electronic Throttle Controls
Indicator, ABS, Stability, and Traction Controls
L26/L32
Figure 2:

LS4


Object Number: 1647782  Size: FS
Master Electrical Component List
Cruise Control Description and Operation (5.3L)
Control Module References
L26, L32
ABS, TRANS, ECM IGN, AIRBAG/DISPLAY, COMPASS, HVAC Fuses and STRTR Relay
LS4
ABS, TRANS, ECM IGN, AIRBAG/DISPLAY, COMPASS, HVAC Fuses and STRTR Relay
Indicator, ABS, Stability, and Traction Controls
VSS and AT ISS Sensors, Pressure Control Solenoid Valve, and TCC Release Switch
Electronic Throttle Controls