GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2007 🢒 CTS 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Passenger Seat Schematics
Figure 1:

Power Seat - Messenger (AH8)
Object Number: 1787424 Size: FS
Master Electrical Component List
Power Seats System Description and Operation
Control Module References
Power Lumbar - Passenger (AL2)
Underhood Fuse Block B+ BUS 2 of 2
Left Rear Fuse Block Seat Circuit Breaker, Trunk Relay/Fuse, Amp, Audio, Driver Dr MOD, and Rear DR MOD Fuse
G307
Figure 2:

Power Lumbar - Passenger (AL2)
Object Number: 1787429 Size: FS
Master Electrical Component List
Lumbar Support Description and Operation (w/o A45)
Control Module References
Power Seat - Passenger (AH8)
Underhood Fuse Block B+ BUS 2 of 2
Left Rear Fuse Block Seat Circuit Breaker, Trunk Relay/Fuse, Amp, Audio, Driver Dr MOD, and Rear DR MOD Fuse
G307