GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2001 🢒 GMC C Sierra - 2WD 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Engine Controls Component Views
Figure 1:

Full Engine View Left Side
Object Number: 334934 Size: LF
(1)Manifold Absolute Pressure (MAP) sensor
(2)Fuel Pressure Regulator
(3)Positive Crankcase Ventilation (PCV) Valve
(4)Left Bank Ignition Coils
(5)Engine Oil Temperature (EOT) Sensor
(6)Engine Coolant Temperature (ECT) Sensor
(7)Throttle Position (TP) Sensor
(8)Throttle Body
(9)Idle Air Control (IAC) Motor
(10)EVAP Purge Valve
Figure 2:

Accelerator Pedal (4.8L/5.3L/6.0L)
Object Number: 776287 Size: MF
(1)APP Sensor Connector
(2)APP Sensor
Figure 3:

RF of the Engine Compartment Components (4.8L/5.3L/6.0L)
Object Number: 350034 Size: MF
(1)Clamp
(2)Air Duct
(3)Clamp
(4)Intake Air Temperature (IAT)/Mass Air Flow (MAF) Sensor
(5)Air Cleaner Assembly
(6)Air Restriction Indicator
Figure 4:

RR of the Engine Compartment Components (4.8L/5.3L/6.0L)
Object Number: 776283 Size: MF
(1)AIR Pump
(2)Vacuum Hose to Air Solenoid
(3)A/C High Pressure Switch
(4)A/C Accumulator
(5)Air Hose to Air Pipes
(6)AIR Solenoid
(7)AIR Relay
(8)AIR Pump Shut Off Valve
(9)Fender to Cowl Brace
Figure 5:

Top of the Engine Components -- CMP Sensor (4.8L/5.3L/6.0L)
Object Number: 776279 Size: MF
(1)Camshaft Position (CMP) Sensor
Figure 6:

Lower RR of the Engine Components (4.8L/5.3L/6.0L)
Object Number: 222858 Size: MF
(1)CKP Mounting Bolt
(2)CKP Mounting Location
(3)Crankshaft Position (CKP) Sensor
Figure 7:

Top of the Engine Components -- Fuel Rail (4.8L/5.3L/6.0L)
Object Number: 776281 Size: MF
(1)Fuel Rail
(2)Fuel Injector
Figure 8:

LR of the Engine Compartment Components (w/Electronic Throttle Controls)
Object Number: 656496 Size: MF
(1)Throttle Actuator Control (TAC) Module
(2)Throttle Actuator Control (TAC) Module Connector
(3)Junction Block-Underhood
Figure 9:

LR Frame -- Fuel Components (4.8L/5.3L/6.0L)
Object Number: 334914 Size: MF
(1)Left Frame Rail
(2)Evaporative Emission (EVAP) Canister Vent Solenoid
(3)Fuel Tank
(4)Evaporative Emission (EVAP) Canister Purge Solenoid
Figure 10:

Top of the Engine Components -- EGR (4.8L/5.3L/6.0L)
Object Number: 350155 Size: MF
(1)AIR System Crossover Pipe
(2)Left Bank AIR Check Valve
(3)Left Bank AIR Pipe
(4)EGR Pipe to Intake Manifold
(5)Exhaust Gas Recirculation (EGR) Valve
(6)EGR Pipe from Exhaust Manifold
(7)Right Bank AIR Pipe
(8)Right Bank Ignition Coils
(9)Right Bank AIR Check Valve
Figure 11:

A/C Compressor Clutch, Oil Level Switch, CKP Sensor and Starter
Object Number: 310258 Size: LF
(1)A/C Compressor Assembly
(1)A/C Compressor Assembly
(2)A/C Compressor Clutch Connector
(3)A/C High Pressure Switch Connector
(3)A/C High Pressure Switch Connector
(4)A/C High Pressure Switch
(5)Oil Level Switch Connector
(6)Starter Assembly
(7)Crankshaft Position Sensor (CKP) Connector
(8)Starter Solenoid Lead
Figure 12:

Top of the Engine -- Ignition Components (4.8L/5.3L/6.0L)
Object Number: 198593 Size: MF
(1)Knock Sensor (KS) 1
(2)Knock Sensor (KS) 2
Figure 13:

LF Radiator Support Components (4.3L/4.8L/5.3L/6.0L)
Object Number: 310796 Size: MF
(1)Powertrain Control Module (PCM)
(2)Radiator Support
(3)Left Frame Rail
(4)PCM Wire Harness Connectors
Figure 14:

Manual Transmission (4.8L/5.3L/6.0L)
Object Number: 310252 Size: MF
(1)Park/Neutral Position (PNP) Switch Connector
(2)Vehicle Speed Sensor (VSS)
(3)Vehicle Speed Sensor (VSS) Connector
(4)PNP Switch
Figure 15:

Automatic Transmission (4.8L/5.3L/6.0L)
Object Number: 310227 Size: LF
(1)Transmission Electrical Connector
(2)Vehicle Speed Sensor (VSS)
(3)Frame Rail Cross Member
(4)Heated Oxygen Sensor Bank 1 Sensor 2 Electrical Connector
(5)Backup Lamp Switch Connector
(6)Park/Neutral Position (PNP) Switch Connector
(7)PNP Switch Assembly
(8)Heated Oxygen Sensor Bank 1 Sensor 1 Electrical Connector
Figure 16:

Automatic Transmission 4L80-E
Object Number: 310233 Size: LF
(1)Vehicle Speed Sensor
(2)Harness Connector
(3)Backup Lamp Switch Connector
(4)Park/Neutral Position (PNP) Switch Connector
(5)Input Shaft Speed Sensor Connector
(6)PNP Switch
Figure 17:

Transfer Case (NVG 261 NP2/NVG 263 NP1)
Object Number: 310210 Size: LF
(1)Vehicle Speed Sensor (VSS) Adapter
(2)Transfer Case Shift Control Switch Connector
(3)VSS Connector
(4)M Transfer Case
(5)Harness Brackets
(6)Left Frame Rail
(7)Crossmember
(8)Fuel Line Bracket
Figure 18:

Transfer Case Shift Control Switch
Object Number: 349756 Size: MF
(1)Transfer Case Shift Control Switch
(2)Instrument Panel Switch and Deflector Housing
Figure 19:

Oxygen Sensor Identification (4.8L/5.3L/6.0L)
Object Number: 718233 Size: MF
(1)Delphi Sensor - Case Grounded
(2)Denso Sensor - Isolated Grounded
Figure 20:

Oxygen Sensors (4.8L and 5.3L)
Object Number: 334918 Size: MF
(1)Bank 1 Sensor 2 HO2S
(2)Bank 1 Sensor 1 HO2S
(3)Bank 1 Sensor 1 HO2S Threaded Boss
(4)Left Bank Catalytic Convertor
(5)Bank 1 Sensor 2 HO2S Threaded Boss
(6)Bank 2 Sensor 1 HO2S Threaded Boss
(7)Right Side Frame Rail
(8)Right Bank Catalytic Convertor
(9)Bank 2 Sensor 2 HO2S Threaded Boss
(10)Bank 2 Sensor 2 HO2S
(11)Bank 2 Sensor 1 HO2S
Figure 21:

Oxygen Sensors (6.0L)
Object Number: 349194 Size: MF
(1)Bank 2 Sensor 1 HO2S
(2)Bank 1 Sensor 2 HO2S Threaded Boss
(3)Right Side Frame Rail
(4)Right Bank Catalytic Convertor
(5)Bank 2 Sensor 2 HO2S
(6)Bank 2 Sensor 2 HO2S Threaded Boss
(7)Left Bank Catalytic Convertor
(8)Bank 1 Sensor 2 HO2S
(9)Bank 1 Sensor 1 HO2S Threaded Boss
(10)Bank 1 Sensor 1 HO2S
(11)Bank 2 Sensor 1 HO2S Threaded Boss