Buick LaCrosse Owner's Manual page 297

25 Rear Heated Seats
26 Antilock Brake
System Pump
27 Electric Park Brake
28 Rear Window
Defogger
41 Brake
Vacuum Pump
42 Cooling Fan K2
43 Not Used
44 Transmission
Auxiliary Oil Pump
(eAssist)
45 Cooling Fan K1
59 AIR Pump
1 Transmission
Control Module
Battery
2 Engine Control
Module Battery
3 Air Conditioning
Compressor Clutch
5 Engine Control
Module Run/Crank
8 Ignition Coils
Even (Six Cylinder
Engine), Ignition
Coils All (Four
Cylinder Engine)
9 Ignition Coils
(Six Cylinder
Engine)
10 Engine Control
Module Switched
Battery (from Engine
Control Module
Relay)
11
13
Odd
14
15
Six Cylinder Engine:
Post Catalytic
Converter Oxygen
Sensor Heater,
Mass Air Flow
Sensor, Flex Fuel
Sensor, Secondary
Air Induction
Solenoid
Run/Crank for
Transmission
Control Module and
Fuel System Control
Module/Chassis
Control Module
(eAssist)
Cabin Heater
Coolant Pump
(eAssist)
Motor Generator
Unit Coolant Pump
(eAssist)