Buick LaCrosse Owner's Manual page 378

Transmission
1 Control
Module Battery
Engine Control
2
Module Battery
Air Conditioning
3
Compressor Clutch
Engine Control
5
Module Run/Crank
Ignition
Coils Even (Six
Cylinder Engine),
8
Ignition Coils
(Four Cylinder
Engine
Ignition Coils
9 (Six Cylinder
Engine)
Engine Control
Module Switched
10 Battery (from Engine
Control Module
Relay)
Six Cylinder Engine:
Post Catalytic
Converter Oxygen
11 Sensor Heater,
Mass Air Flow
Sensor, Flex Fuel
Sensor
Run/Crank for
Transmission
13 Control Module and
Fuel System Control
Module
Cabin Heater
All 14 Coolant Pump
(eAssist)
Motor Generator
Odd 15 Unit Coolant Pump
(eAssist)
Run/Crank for
16 eAssist Power
Inverter Module
Airbag
17 Module
Crank
18
23
29
30
31
32
33
34
Run/
35
Vented Seats
(eAssist)
Variable Effort
Steering
(if equipped) or
eAssist Power
Inverter Module
Power Lumbar, Left
Power Lumbar,
Right or Power Pack
Cooling Fan
(eAssist)
Passive Entry/
Passive Start
Module Battery 1
(eAssist)
Body Control
Module 6
Heated
Seat Front
Antilock Brake
System Valves
Amplifier