GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
GMC_Truck
🢒
1998
🢒
Yukon - 4WD
🢒
Engine
🢒 Engine Controls - 5.0L and 5.7L
Engine
All Component Locator
Engine Controls Component Views
Engine Controls Components
All Description and Operation
Air Intake System Description
Central Sequential Duel Injection Fuel System Description
Crankcase Ventilation System Description
Engine Cooling Fan Description - Electric
Enhanced Ignition System Description
Evaporative Emission Control System Operation Description
Exhaust Gas Recirculation (EGR) System Description
Fuel Metering System Component Description
Fuel Supply Component Description
Information Sensors/Switches Description
Knock Sensor (KS) System Description
Long Term Fuel Trim Description
Secondary Air Injection System Description
Serial Data Communications
Short Term Fuel Trim Description
Speed Density System Description
Vehicle Control Module Description
All Special Tools and Equipment
Special Tools
All Visual Identification
Engine Controls Connector End Views
VCM Connector End Views
Cleaning, Inspection, and Adjustment
Camshaft Retard Offset Adjustment
Crankshaft Position System Variation Learn
Evaporative Emission System Cleaning
Fuel Injector Cleaning
Fuel System Cleaning
Password Learn
Diagnostic Procedures
Air Conditioning (A/C) Compressor Control Circuit Diagnosis
Alcohol/Contaminants-in-Fuel Diagnosis
Backfire
Crankcase Ventilation System Diagnosis
Cuts Out, Misses
Data Link Connector Diagnosis
Detonation/Spark Knock
Dieseling, Run-On
Electric Cooling Fan Diagnosis
Engine Cranks But Does Not Run
Enhanced Ignition System Diagnosis
Evaporative Emission Control System Diagnosis
Exhaust Gas Recirculation (EGR) System Diagnosis
Fuel Injector Balance Test
Fuel Injector Circuit Diagnosis
Fuel Injector Solenoid Coil Test
Fuel Pump Electrical Circuit Diagnosis
Fuel System Diagnosis
Fuel Tank Pressure Sensor Diagnosis
Hard Start
Hesitation, Sag, Stumble
Idle Air Control (IAC) System Diagnosis
Inspection/Maintenance Status Resetting
Intermittent Conditions
Lack of Power, Sluggishness, or Sponginess
Malfunction Indicator Lamp Circuit Check
Manual Transmission Shift Light
Poor Fuel Economy
Poor Fuel Fill Quality
Powertrain On Board Diagnostic (OBD) System Check
Restricted Exhaust System Check
Rough, Unstable, or Incorrect Idle and Stalling
Secondary Air Injection System Diagnosis
Service Bay Test
Surges/Chuggles
Symptoms
Diagnostic Trouble Codes
DTC P0101 Mass Air Flow (MAF) Sensor Performance
DTC P0102 Mass Air Flow (MAF) Sensor Circuit Low Frequency
DTC P0103 Mass Air Flow (MAF) Sensor Circuit High Frequency
DTC P0106 Manifold Absolute Pressure (MAP) System Performance
DTC P0107 Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage
DTC P0108 Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage
DTC P0112 Intake Air Temperature (IAT) Sensor Circuit Low Voltage
DTC P0113 Intake Air Temperature (IAT) Sensor Circuit High Voltage
DTC P0117 Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage
DTC P0118 Engine Coolant Temperature (ECT) Sensor Circuit High Voltage
DTC P0121 Throttle Position (TP) Sensor Performance
DTC P0122 Throttle Position (TP) Sensor Circuit Low Voltage
DTC P0123 Throttle Position (TP)Sensor Circuit High Voltage
DTC P0125 Engine Coolant Temperature (ECT) Insufficient for Closed Loop Fuel Control
DTC P0131 HO2S Circuit Low Voltage Bank 1 Sensor 1
DTC P0132 HO2S Circuit High Voltage Bank 1 Sensor 1
DTC P0133 HO2S Slow Response Bank 1 Sensor 1
DTC P0134 HO2S Circuit Insufficient Activity Bank 1 Sensor 1
DTC P0135 HO2S Heater Performance Bank 1 Sensor 1
DTC P0137 HO2S Circuit Low Voltage Bank 1 Sensor 2
DTC P0138 HO2S Circuit High Voltage Bank 1 Sensor 2
DTC P0140 HO2S Circuit Insufficient Activity Bank 1 Sensor 2
DTC P0141 HO2S Heater Performance Bank 1 Sensor 2
DTC P0143 HO2S Circuit Low Voltage Bank 1 Sensor 3
DTC P0144 HO2S Circuit High Voltage Bank 1 Sensor 3
DTC P0146 HO2S Circuit Insufficient Activity Bank 1 Sensor 3
DTC P0147 HO2S Heater Performance Bank 1 Sensor 3
DTC P0151 HO2S Circuit Low Voltage Bank 2 Sensor 1
DTC P0152 HO2S Circuit High Voltage Bank 2 Sensor 1
DTC P0153 HO2S Slow Response Bank 2 Sensor 1
DTC P0154 HO2S Circuit Insufficient Activity Bank 2 Sensor 1
DTC P0155 HO2S Heater Performance Bank 2 Sensor 1
DTC P0157 HO2S Circuit Low Voltage Bank 2 Sensor 2
DTC P0158 HO2S Circuit High Voltage Bank 2 Sensor 2
DTC P0160 HO2S Circuit Insufficient Activity Bank 2 Sensor 2
DTC P0161 HO2S Heater Performance Bank 2 Sensor 2
DTC P0171 Fuel Trim System Lean Bank 1
DTC P0172 Fuel Trim System Rich Bank 1
DTC P0174 Fuel Trim System Lean Bank 2
DTC P0175 Fuel Trim System Rich Bank 2
DTC P0300 Engine Misfire Detected
DTC P0325 Knock Sensor (KS) Circuit
DTC P0327 Knock Sensor (KS) Circuit
DTC P0336 Crankshaft Position (CKP) Sensor Performance
DTC P0337 Crankshaft Position (CKP) Sensor Circuit Low Duty Cycle
DTC P0338 Crankshaft Position (CKP) Sensor Circuit High Duty Cycle
DTC P0339 Crankshaft Position (CKP) Sensor Circuit Intermittent
DTC P0340 Camshaft Position (CMP) Sensor Circuit
DTC P0341 Camshaft Position (CMP) Sensor Performance
DTC P0401 Exhaust Gas Recirculation (EGR) Flow Insufficient
DTC P0404 Exhaust Gas Recirculation (EGR) Open Position Performance
DTC P0405 Exhaust Gas Recirculation (EGR) Position Sensor Circuit Low Voltage
DTC P0410 Secondary Air Injection (AIR) System
DTC P0420 Catalyst System Low Efficiency Bank 1
DTC P0430 Catalyst System Low Efficiency Bank 2
DTC P0440 Evaporative Emission (EVAP) System
DTC P0442 Evaporative Emission (EVAP) System Small Leak Detected
DTC P0446 Evaporative Emission (EVAP) Vent System Performance
DTC P0452 Fuel Tank Pressure Sensor Circuit Low Voltage
DTC P0453 Fuel Tank Pressure Sensor Circuit High Voltage
DTC P0461 Fuel Level Sensor Performance
DTC P0462 Fuel Level Sensor Circuit Low Voltage
DTC P0463 Fuel Level Sensor Circuit High Voltage
DTC P0500 Vehicle Speed Sensor (VSS) Circuit
DTC P0506 Idle Speed Low
DTC P0507 Idle Speed High
DTC P0601
DTC P0602 Control Module Not Programmed
DTC P0603 Control Module Long Term Memory Reset
DTC P0604 Control Module Random Access Memory (RAM)
DTC P0605 Control Module Programming Read Only Memory (ROM)
DTC P0704 Clutch Switch Circuit
DTC P1106 Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent High Voltage
DTC P1107 Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent Low Voltage
DTC P1111 Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage
DTC P1112 Intake Air Temperature (IAT) Sensor Circuit Intermittent Low Voltage
DTC P1114 Engine Coolant Temperature (ECT) Sensor Circuit Intermittent Low Voltage
DTC P1115 Engine Coolant Temperature (ECT) Sensor Circuit Intermittent High Voltage
DTC P1121 Throttle Position (TP) Sensor Circuit Intermittent High Voltage
DTC P1122 Throttle Position (TP) Sensor Circuit Intermittent Low Voltage
DTC P1133 HO2S Insufficient Switching Bank 1 Sensor 1
DTC P1134 HO2S Transition Time Ratio Bank 1 Sensor 1
DTC P1153 HO2S Insufficient Switching Bank 2 Sensor 1
DTC P1154 HO2S Transition Time Ratio Bank 2 Sensor 1
DTC P1336 Crankshaft Position (CKP) System Variation Not Learned
DTC P1345 Crankshaft Position (CKP)-Camshaft Position (CMP) Correlation
DTC P1351 Ignition Coil Control Circuit High Voltage
DTC P1361 Ignition Coil Control Circuit Low Voltage
DTC P1380 Misfire Detected - Rough Road Data Not Available
DTC P1381 Misfire Detected - No Communication with Brake Control Module
DTC P1404 Exhaust Gas Recirculation (EGR) Closed Position Performance
DTC P1415 Secondary Air Injection (AIR) System Bank 1
DTC P1416 Secondary Air Injection (AIR) System Bank 2
DTC P1441 Evaporative Emission (EVAP) System Flow During Non-Purge
DTC P1508 Idle Speed Low - Idle Air Control (IAC) System Not Responding
DTC P1509 Idle Speed High - Idle Air Control (IAC) System Not Responding
DTC P1621 Control Module Long Term Memory Performance
DTC P1626 Theft Deterrent Fuel Enable Signal Not Received
DTC P1631 Theft Deterrent Start Enable Signal Not Correct
DTC U1026 Loss of ATCM Communication
DTC U1041 Loss of EBCM Communication
DTC U1192 Loss of VTD (Passlock)/EVO Communication
DTC U1193 Loss of VIM Class 2 Communication
Electrical/Electronic Schematic Diagrams
Engine Controls Schematic Icons
Engine Controls Schematic References
Engine Controls Schematics
Electrical/Electronic Specifications
Temperature Versus Resistance
Gas, Vacuum and Fluids Schematics and Diagrams
Emission Hose Routing Diagram
General Diagnostic Information
Vehicle Control Module Diagnosis
Mechanical Specifications
Fastener Tightening Specifications
Other Specifications
Diagnostic Trouble Code (DTC) List
Engine Scan Tool Data Definitions
Engine Scan Tool Data List
GM SPO Group Numbers
Removal, Installation, and Replacement
Accelerator Control Cable Replacement
Accelerator Pedal Replacement
Air Cleaner Assembly Replacement
Air Cleaner Element Replacement
Air Cleaner Inlet Duct Replacement
Camshaft Position Sensor Replacement
Central Sequential Multiport Fuel Injector Replacement
Crankshaft Position Sensor Replacement
Engine Coolant Temperature Sensor Replacement
Evaporative Emission Canister Purge Solenoid Valve Replacement
Evaporative Emission Canister Replacement
Evaporative Emission Vent Valve Replacement
Exhaust Gas Recirculation Pipe Replacement
Exhaust Gas Recirculation Valve Replacement
Filler Tube Replacement
Fuel Filter Element Replacement
Fuel Hose/Pipes Assembly Replacement
Fuel Hose/Pipes Replacement - Engine Compartment
Fuel Level Sensor Replacement
Fuel Meter Body Assembly Replacement
Fuel Pressure Regulator Replacement (CSFI)
Fuel Pressure Relief
Fuel Pressure Service Valve Replacement
Fuel Pump and Engine Oil Pressure Sensor Replacement
Fuel Pump Relay Replacement
Fuel Pump Replacement
Fuel Pump Replacement
Fuel Sender Assembly Replacement
Fuel Tank Draining
Fuel Tank Pressure Sensor Replacement
Fuel Tank Replacement
Heated Oxygen Sensor Replacement
Idle Air Control Valve Replacement
In-Line Fuel Filter Replacement
Intake Air Resonator Replacement
Intake Air Temperature Sensor Replacement
Knock Sensor Replacement
Manifold Absolute Pressure Sensor Replacement
Mass Airflow Sensor Replacement
Metal Collar Quick Connect Fitting Service
Plastic Collar Quick Connect Fitting Service
Secondary Air Injection Check Valve and Check Valve Pipe Replacement
Secondary Air Injection Pump Replacement
Throttle Body Assembly Replacement
Throttle Position Sensor Replacement
VCM Replacement/Programming