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

LE8/LE9


Object Number: 2085158  Size: FS
Master Electrical Component List
Power Steering System Description and Operation (Non-Turbo)
Control Module References
LNF
Figure 2:

LNF


Object Number: 2085445  Size: FS
Master Electrical Component List
Power Steering System Description and Operation (Turbo)
Control Module References
Power Steering Schematics (L61/LE5)