GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1999 🢒 Express 🢒 Body and Accessories 🢒 Wiring Systems 🢒 Engine Controls Component Views
Figure 1:

Data Link Connector (DLC)
Object Number: 535672 Size: MF
(1)Data Link Connector (DLC)
Figure 2:

Vehicle Speed Sensor (2WD)
Object Number: 209622 Size: SF
(1)Vehicle Speed Sensor (VSS)
Figure 3:

Vehicle Speed Sensor (4L80E)
Object Number: 537877 Size: MF
(1)Vehicle Speed Sensor (VSS)
Figure 4:

Fuel Tank Assembly (NE7 only)
Object Number: 536395 Size: MF
(1)Fuel Pump/Sender Assembly
(2)Fuel Tank
Figure 5:

Fuel Tank Pressure Sensor and Fuel Level Sender Assembly
Object Number: 235167 Size: MF
(1)Fuel Tank
(2)Fuel Tank Pressure Sensor Connector
(3)Fuel Level Sender Connector
(4)Fuel Tank Sender Assembly
Figure 6:

Idle Air Control (IAC) and Throttle Position (TP) Sensor
Object Number: 404301 Size: MF
(1)Idle Air Control (IAC) Valve
(2)Throttle Position (TP) Sensor
(3)Engine Coolant Temperature (ECT) Sensor
(4)Manifold Absolute Pressure (MAP) Sensor
(5)Accelerator Control Cable
Figure 7:

Idle Air Control, Manifold Absolute Pressure, Engine Coolant Temperature, Throttle Position Sensors
Object Number: 214402 Size: LF
(1)Idle Air Control (IAC) Valve Motor
(2)Engine Coolant Temperature (ECT) Sensor
(3)Manifold Absolute Pressure (MAP) Sensor
(4)Crankshaft Position (CKP) Sensor
(5)Throttle Position (TP) Sensor
Figure 8:

Ignition Control Module,Camshaft Position Sensor,Knock Sensor
Object Number: 214403 Size: MF
(1)Ignition Control Module
(2)Camshaft Position Sensor
(3)Engine Oil Pressure Switch
Figure 9:

MAF, IAT and Air Cleaner
Object Number: 247644 Size: MF
(1)Mass Air Flow (MAF) Sensor
(2)Air Cleaner Assembly
(3)Intake Air Temperature (IAT) Sensor
Figure 10:

Knock Sensors
Object Number: 404291 Size: MF
(1)Knock Sensor (left side)
(2)Knock Sensor (right side)
Figure 11:

Canister Purge, Linear EGR, Knock Sensor
Object Number: 214405 Size: LF
(1)Linear Exhaust Gas Recirculation (EGR) Valve
(2)Canister Purge Valve Solenoid
Figure 12:

EVAP Canister and Fuel Tank
Object Number: 247639 Size: LF
(1)Evaporative Emission (EVAP) Vent Valve
(2)Evaporative Emission (EVAP) Canister
(3)Fuel Tank
(4)Fuel Pump/Sender Assembly
Figure 13:

Fuel Filter and EVAP Canister
Object Number: 536459 Size: MF
(1)Evaporative Emission (EVAP) Canister
(2)Fuel Filter
Figure 14:

Fuel Filter and EVAP Canister
Object Number: 536444 Size: MF
(1)Evaporative Emission (EVAP) Canister
(2)Fuel Filter
Figure 15:

VCM and Underhood Relay Center
Object Number: 247642 Size: LF
(1)Underhood Relay Center
(2)Vehicle Control Module (VCM)
Figure 16:

Heated Oxygen Sensors
Object Number: 404297 Size: SF
(1)HO2S Bank 2 Sensor 2
(2)HO2S Bank 1 Sensor 2
(3)HO2S Bank 1 Sensor 1
(4)HO2S Bank 2 Sensor 1
Figure 17:

Air Injection Reaction (AIR) Pump
Object Number: 404290 Size: MF
(1)Air Injection Reaction (AIR) Pump