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

Under the Driver Seat


Object Number: 826952  Size: LF
(1)Inflatable Restraint Sensing and Diagnostic Module (SDM) (AJ3/AK5)
(2)C203 (16 cavities - I/P Harness to the Body/Roof Harness)
(3)C206 (4 cavities - I/P Harness to the Body/Roof Harness)
(4)Body/Roof Harness
(5)C315 (2 cavities - Console Harness to the Body/Roof Harness)
(6)Body/Roof Harness
Figure 2:

I/P Harness


Object Number: 953447  Size: LF
(1)Fuse Block - Underhood (Secondary)
(2)Blower Motor Resistor Assembly (C40/C60)
(3)C207 (30 cavities)
(4)Inflatable Restraint I/P Module (AK5)
(5)Fuse Block - I/P - 1
(6)Fuse Block - I/P - 2
(7)Air Brake Pressure Gage Lamp (JE4), Differential Lock Switch Lamp (HNB/HPL/HPN), Inter-Axle Differential Lock Switch Lamp (Tandem Axle), Rear Axle Driver Control Switch Lamp - Two Speed (HR1/Automatic Transmission)
(8)HVAC Control Assembly (C40/C60)
(9)Turn Signal/Hazard Flasher Module
(10)Daytime Running Lights (DRL) Diode
(11)Instrument Panel Cluster (IPC)
(12)Headlamp Switch
(13)Daytime Running Lights (DRL) Module
(14)SP203 (12 cavities)
(15)C201 (48 cavities)
(16)Inflatable Restraint Steering Wheel Module (AJ3/AK5)
(17)C211 (22 cavities)
(18)C215 (8 cavities)
(19)C150 (4 cavities)
(20)Accelerator Pedal Position (APP) Sensor
(21)Radio
(22)Serial Data Gateway (SDG)
(23)Driver Information Center (DIC)
(24)Engine Control Module (ECM)
(25)C126 (40 cavities)
(26)C109 (40 cavities)
(27)C200
(28)C118
(29)G102
Figure 3:

Center of the I/P


Object Number: 826775  Size: LF
(1)Marker Lamp Switch (RQ2 and U86 or RQ3)
(2)Air Brake Pressure Gage (JE4)
(3)High Idle Switch (UF3)
(4)Automatic Transmission Fluid Temperature (TFT) Gage (Allison® LCT/UTX)
(5)Traction Control Switch (NW9)
(6)Outside Heated Mirror Switch (DB6/DB8)
(7)Exhaust Brake Switch (K40)
(8)Rear Axle Driver Control Switch (HPZ/Automatic Transmission)
(9)Inflatable Restraint I/P Module Disable Switch (AK5 w/o AQR)
(10)Air Suspension Dump Switch (G40/G45/GSJ)
(11)Power Take-Off (PTO) Switch
(12)Driver Information Center (DIC)
Figure 4:

Front Bottom of Vehicle


Object Number: 826951  Size: LF
(1)Inflatable Restraint Front End Discriminating Sensor Connector
(2)Inflatable Restraint Front End Discriminating Sensor (AJ3/AK5)
(3)Horns