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

Instrument Panel


Object Number: 1699704  Size: LF
(1)Trailer Park Brake Control (JE4)
(2)Park Brake Control (JE4)
(3)Gage Center
(4)Inflatable Restraint I/P Module (AK5)
(5)Auxiliary Power Outlets
(6)Air Brake Pressure Gage (JE4)
(7)Transfer Case Shift Control Switch (NP1)
(8)Traction Control Switch (NW9)
(9)Outside Heated Mirror Switch (DB6/DB8)
(10)Exhaust Brake Switch (K40)
(11)Rear Axle Driver Control Switch - Two Speed (HPZ/Automatic Transmission)
(12)Inflatable Restraint I/P Module Disable Switch (AK5 w/o AQR)
(13)Differential Lock Switch (HNB/HPL/HPN) or Inter-Axle Differential Lock Switch (Tandem Axle)
(14)Switch
(15)Air Suspension Dump Switch (G40/G45/GSJ)
(16)Diesel Particulate Filter (DPF) (Diesel Only)
(17)Marker Lamp Switch (RQ2 and U86 or RQ3)
(18)High Idle Switch (UF3)/Power Take-Off (PTO) Switch
(19)Air Cleaner Restriction Gage (UPM)
(20)Automatic Transmission Fluid Temperature (TFT) Gage (Allison® LCT/UXT)
(21)I/P Switchbank
(22)HVAC Control Assembly (C40/C60)
(23)Driver Information Center (DIC)
(24)Radio (w/o UL5)
(25)Inflatable Restraint Steering Wheel Module (AJ3/AK5)
(26)Headlamp Switch
(27)Turn Signal/Multifunction Switch
(28)Instrument Panel Cluster (IPC)
Figure 2:

Left Front Door


Object Number: 1014673  Size: LF
(1)Door Lock Switch - Driver (AU3)
(2)Outside Rearview Mirror Switch (DB6)
(3)Window Switch - Driver (A31)
(4)Outside Rearview Mirror Switch Connector
(5)Window Switch - Driver Connector
(6)Door Lock Switch - Driver Connector
(7)Speaker - LF Tweeter Connector
(8)Speaker - LF Tweeter (ZQ2)
(9)Speaker - LF
(10)Speaker - LF Connector
(11)Window Motor - Driver (A31)
(12)Door Latch Assembly - Driver C1 (Lock Actuator)
(13)Door Latch Assembly - Driver C2 (Jamb Switch)
Figure 3:

Right Front Door


Object Number: 1014807  Size: LF
(1)Door Lock Switch - Passenger (AU3)
(2)Window Switch - Passenger (A31)
(3)Window Switch - Passenger Connector
(4)Door Lock Switch - Passenger Connector
(5)Speaker - RF Tweeter Connector
(6)Speaker - RF Tweeter (ZQ2)
(7)Door Latch Assembly - Passenger C1 (Lock Actuator)
(8)Door Latch Assembly - Passenger C2 (Jamb Switch)
(9)Window Motor - Passenger (A31)
(10)Speaker - RF Connector
(11)Speaker - RF
Figure 4:

Cab - Front View (GRW)


Object Number: 953518  Size: LF
(1)Outside Rearview Mirror - Passenger
(2)Headlamp - High/Low Beam - Right
(3)Clearance Lamp - Right
(4)Identification (ID) Lamp - Right
(5)Identification (ID) Lamp - Center
(6)Identification (ID) Lamp - Left
(7)Clearance Lamp - Left
(8)Outside Rearview Mirror - Driver
(9)Park/Turn Signal Lamp - LF
(10)Headlamp - High/Low Beam - Left
(11)Park/Turn Signal Lamp - RF
Figure 5:

Cab - Front View (V22)


Object Number: 1042004  Size: MF
(1)Outside Rearview Mirror - Passenger
(2)Headlamp - High Beam - Right
(3)Clearance Lamp - Right
(4)Identification (ID) Lamp - Right
(5)Identification (ID) Lamp - Center
(6)Identification (ID) Lamp - Left
(7)Clearance Lamp - Left
(8)Headlamp - High Beam - Left
(9)Outside Rearview Mirror - Driver
(10)Park/Turn Signal Lamp - LF
(11)Headlamp - Low Beam - Left
(12)Headlamp - Low Beam - Right
(13)Park/Turn Signal Lamp - RF