Repair and Diagnosis
- A L L Diagnostic Trouble Codes ( DTC )
- Relays and Modules
- Relays and Modules - Accessories and Optional Equipment
- Relays and Modules - Body and Frame
- Relays and Modules - Powertrain Management
- Relays and Modules - Steering and Suspension
- Sensors and Switches
- Sensors and Switches - Brakes and Traction Control
- Sensors and Switches - Cooling System
- Sensors and Switches - Cruise Control
- Sensors and Switches - Engine
- Sensors and Switches - Instrument Panel
- Sensors and Switches - Lighting and Horns
- Sensors and Switches - Powertrain Management
- Sensors and Switches - Starting and Charging
- Sensors and Switches - Transmission and Drivetrain
- Sensors and Switches - Wiper and Washer Systems
- Maintenance
- Alignment
- Tune-up and Engine Performance Checks
- Timing Belt
- Drive Belt
- Filters
- Hoses
- Fluids
- Brake Bleeding
- Fuses and Circuit Breakers
- Service Reminder Indicators
- Wheels and Tires
- Application and ID
- Service Intervals
- Severe Service Defined
- Routine Service
- Normal Service
- 7500 MI or 12000 KM
- 15000 MI or 24000 KM
- 22500 MI or 36000 KM
- 30000 MI or 48000 KM
- 37500 MI or 60000 KM
- 45000 MI or 72000 KM
- 52500 MI or 84000 KM
- 60000 MI or 96000 KM
- 67500 MI or 108000 KM
- 75000 MI or 120000 KM
- 82500 MI or 132000 KM
- 90000 MI or 144000 KM
- 97500 MI or 156000 KM
- 100000 MI or 160000 KM
- 105000 MI or 168000 KM
- 112500 MI or 180000 KM
- 120000 MI or 192000 KM
- Severe Service
- 3000 MI or 4800 KM
- 6000 MI or 9600 KM
- 9000 MI or 14400 KM
- 12000 MI or 19200 KM
- 15000 MI or 24000 KM
- 18000 MI or 28800 KM
- 21000 MI or 33600 KM
- 24000 MI or 38400 KM
- 27000 MI or 43200 KM
- 30000 MI or 48000 KM
- 33000 MI or 52800 KM
- 36000 MI or 57600 KM
- 39000 MI or 62400 KM
- 42000 MI or 67200 KM
- 45000 MI or 72000 KM
- 48000 MI or 76800 KM
- 51000 MI or 81600 KM
- 54000 MI or 86400 KM
- 57000 MI or 91200 KM
- 60000 MI or 96000 KM
- 63000 MI or 100800 KM
- 66000 MI or 105600 KM
- 69000 MI or 110400 KM
- 72000 MI or 115200 KM
- 75000 MI or 120000 KM
- 78000 MI or 124800 KM
- 81000 MI or 129600 KM
- 84000 MI or 134400 KM
- 87000 MI or 139200 KM
- 90000 MI or 144000 KM
- 93000 MI or 148800 KM
- 96000 MI or 153600 KM
- 99000 MI or 158400 KM
- 102000 MI or 163200 KM
- 105000 MI or 168000 KM
- 108000 MI or 172800 KM
- 111000 MI or 177600 KM
- 114000 MI or 182400 KM
- 117000 MI or 187200 KM
- 120000 MI or 192000 KM
- 123000 MI or 196800 KM
- 126000 MI or 201600 KM
- 129000 MI or 206400 KM
- 132000 MI or 211200 KM
- 135000 MI or 216000 KM
- 138000 MI or 220800 KM
- 141000 MI or 225600 KM
- 144000 MI or 230400 KM
- 147000 MI or 235200 KM
- 150000 MI or 240000 KM
Service and Repair
Specifications
Technical Service Bulletins
- Engine, Cooling and Exhaust
- Engine
- Compression Check
- Camshaft, Lifters and Push Rods
- Cylinder Block Assembly
- Cylinder Head Assembly
- Drive Belts, Mounts, Brackets and Accessories
- Engine Lubrication
- Intake Manifold
- Lamps and Indicators - Engine
- Seals and Gaskets
- Sensors and Switches - Engine
- Timing Components
- Tune-up and Engine Performance Checks
- Water Pump
Locations- Service and Repair
- Specifications
- Technical Service Bulletins
- Cooling System
- Coolant
- Coolant Level Indicator Lamp
- Radiator Cooling Fan
- Engine - Coolant Temperature Sensor/Switch
- Heater Core
- Lamps and Indicators - Cooling System
- Radiator
- Radiator Cap
- Radiator Hose
- Sensors and Switches - Cooling System
- Temperature Gauge
- Temperature Warning Lamp/Indicator
- Thermostat
- Water Pump
- Specifications
- Technical Service Bulletins
- Technical Service Bulletins
- Engine
- Powertrain Management
- Relays and Modules - Powertrain Management
- Sensors and Switches - Powertrain Management
- Tune-up and Engine Performance Checks
- Computers and Control Systems
- A/C Signal
- Air Temperature Sensor ( Ambient / Intake )
- Barometric Pressure Sensor
- Coolant Temperature Sensor/Switch (For Computer)
- Data Link Connector
- Electronic Spark Control Module
- Engine Control Module
- Ignition Hall Effect Sensor
- Idle Speed/Throttle Actuator - Electronic
- Idle Up Control Valve
- Idle/Throttle Speed Control Unit
- Knock Sensor
- Malfunction Indicator Lamp
- Manifold Pressure/Vacuum Sensor
- Memory Calibration Unit
- Mixture Control Solenoid
- Oil Pressure Sensor
- Oxygen Sensor
- Relays and Modules - Computers and Control Systems
- Sensors and Switches - Computers and Control Systems
- Throttle Position Sensor
- Transmission Position Sensor/Switch
- Vehicle Speed Sensor
Service Precautions- Application and ID
Description and Operation
Testing and Inspection- Initial Inspection and Diagnostic Overview
- Reading and Clearing Diagnostic Trouble Codes
- Symptom Related Diagnostic Procedures
- - A-E Charts & Related Test Procedures
- - Diagnosis By Symptom
- - Driver Complaint/Comments Charts
- - When to Use This Section
- Backfires
- Cuts Out/Misses
- Detonation/Spark Knock/Pings
- Dieseling/Run-On
- Excessive Exhaust Emissions (Odors)
- Hard to Start
- Hesitation, Sag, Stumble
- Lack of Power/Sluggish/Spongy/Stumble
- No Start - Engine Cranks OK
- Poor Fuel Economy
- Rough, Unstable, or Incorrect Idle, Stalling
- Stalls After Start - Cold
- Stalls After Start - Hot
- Surges/Chuggles
- Trouble Code Memory Loss
- - Diagnosis By Symptom - High Energy Ignition (HEI) System
- Component Tests and General Diagnostics
- Scan Tool Testing and Procedures
Adjustments
Diagrams- Technical Service Bulletins
Tools and Equipment
- Emission Control Systems
- Air Injection
- Early Fuel Evaporation ( EFE )
- Evaporative Emissions System
- Exhaust Gas Recirculation
- Diagrams
- Technical Service Bulletins
- Fuel Delivery and Air Induction
- Fuel Pressure
- Fuel Pressure Release
- Idle Speed
- Air Cleaner Housing
- Altitude Compensator
- Carburetor
- Accelerator Pump
- Carburetor Float
- Carburetor Jet
- Choke Pull-off
- Choke Unloader
- Application and ID
- Description and Operation
- Adjustments
- Rochester E4M Series
- Choke Cover Removal
- Float Level
- Choke Coil Lever
- Choke Rod
- Air Bleed Hole Blocking Procedure
- Front Vacuum Break Adjustment
- Rear Vacuum Break Adjustment
- Air Valve Dashpot Adjustment
- Choke Unloader Adjustment
- Secondary Throttle Valve Lockout Adjustment
- Air Valve Spring Wind-Up
- Idle Load Compensator (ILC)
- Idle Speed Control (ISC)
- Throttle Position Sensor (TPS)
- Fast Idle Speed, Adjust
- Idle Mixture, Adjust
- On-Vehicle Adjustments
- Rochester E4M Series
- Service and Repair
- Disassemble
- Cleaning & Inspection
- Assemble
- Concealment Plug Removal
- Description
- Identification Location
- On Vehicle Adjustments
- Overhaul
- Specifications
- Technical Service Bulletins
- Dashpot
- Fuel
- Fuel Filter
- Fuel Injector
- Fuel Pump
- Fuel Return Line
- Fuel Supply Line
- Fuel Tank
- Idle Speed/Throttle Actuator - Electronic
- Idle Up Control Valve
- Idle/Throttle Speed Control Unit
- Relays and Modules - Fuel Delivery and Air Induction
- Secondary Throttle Valve
- Sensors and Switches - Fuel Delivery and Air Induction
- Throttle Body
- Throttle Position Sensor
- Turbocharger
- Service Precautions
- Description and Operation
- Adjustments
- Service and Repair
- Diagrams
- Specifications
- Technical Service Bulletins
- Ignition System
- Transmission Control Systems
- PROM - Programmable Read Only Memory
- Service Precautions
- Application and ID
- Diagrams
- Technical Service Bulletins
- Transmission and Drivetrain
- Actuators and Solenoids - Transmission and Drivetrain
- Automatic Transmission/Transaxle
- Actuators and Solenoids - A/T
- Accumulator
- Band
- Band Apply Servo
- Bell Housing
- Case
- Clutch
- Differential
- Extension Housing
- Fluid - A/T
- Fluid Filter - A/T
- Fluid Pan
- Fluid Pressure Sensor/Switch
- Fluid Pump
- Governor
- Input Shaft
- Output Shaft
- Output Shaft Bearing/Bushing
- Overdrive Assembly
- Park Gear
- Parking Pawl
- Planetary Gears
- Seals and Gaskets
- Sensors and Switches - A/T
- Shifter A/T
- Shift Linkage
- Shift Modulator
- Speedometer Gear, A/T
- Sun Gear
- Throttle Valve Assembly
- Throttle Valve Cable/Linkage
- Torque Converter
- Torque Converter Clutch
- Torque Converter Clutch Solenoid
- Transmission Cooler
- Transmission Mount
- Transmission Position Sensor/Switch
- Transmission Pressure Test Port
- Turbine Shaft
- Valve Body
- Wiring Harness
- Application and ID
- Description and Operation
- Testing and Inspection
- Initial Inspection and Diagnostic Overview
- Symptom Related Diagnostic Procedures
- 4L60 (700-R4) Automatic Transmission
- Converter Clutch Does Not Release
- Converter Shudder
- Drives In Neutral
- High or Low Shift Points
- No Overrun Braking-Manual 3-2-1
- No Park
- No Part Throttle or Delayed Downshifts
- No Reverse or Slips In Reverse
- No Torque Converter Clutch Apply
- No 2-3 Shift or 2-3 Shift Shift Slipping, Rough or Hunting
- No 3-4 Shift or Rough 3-4 Shift
- Oil Out of the Vent
- Oil Pressure High or Low
- Ratcheting Noise
- Second Gear Start In Drive Range
- Slips In 1ST Gear
- Vibration In Reverse & Whining Noise In Park
- 1-2 Shift Slipping or Rough
- 1-2 Shift Speed - High or Low
- 1ST Gear Range Only - No Upshift
- 250/250C, 350/350C Automatic Transmission
- Burned Direct Clutch Plates
- Burned Forward Clutch Plates
- Burned Intermediate Band
- Burned Intermediate Clutch Plates
- Completely Stripped Governor Nylon Gear
- First Speed Only, No 1-2 Shift
- Governor Gear Stripped on One Side
- Harsh 1-2 Shift
- Locks In Reverse From Park to Reverse Only
- Locks Up In Manual Low (Usually Hot Only)
- Locks Up In Reverse (Usually Hot Only)
- Low or High Shift Points
- Manual Low No Drive
- Moves Forward In Neutral
- No Cold Reverse Drive Until Engine Warms Up
- No Drive In Drive Range
- No Drive In Reverse or Slips In Reverse
- No Engine Braking In 1ST Speed
- No Engine Braking In 2nd Speed
- No First Speed, Starts In Second
- No Forward or Reverse Operation
- No Part Throttle Downshifts
- Oil Pressure High or Low
- Rough 1-2 Shift
- Rough 2-3 Shift
- Second Gear Starts or Slips Second Only
- Shift Cold But Not Warm
- Shifted Manually Thru All Ranges
- Slips In All Ranges
- Slips 1-2 Shift
- Slips 2-3 Shift
- Slow Reverse Cold
- Slow Reverse Hot
- Will Not Hold In Park
- 1-2 Shift at Full Throttle Only
- 1ST & 2ND Only, No 2-3 Shift
- 4L60 (700-R4) Automatic Transmission
- Component Tests and General Diagnostics
- Service and Repair
- Procedures
- 4L60 (700-R4) Automatic Transmission
- 250/250C, 350/350C Automatic Transmission
- Case Electrical Connector, Removal
- Detent/T.V. Cable Adjust
- Extension Housing Oil Seal Replace
- Governor Replace
- Intermediate Band Replace
- Manual Shaft, Range Selector Inner Lever & Parking Linkage
- Manual Shift Linkage Adjust - Column Shift
- Manual Shift Linkage Adjust - Console Shift
- Steering Column Lock Back Drive Adjust
- Vacuum Modulator & Modulator Valve Replace
- Valve Body Replace
- 350, 350C - Intermediate Clutch Accumulator Piston Assembly
- Removal and Replacement
- Overhaul
- 250/250C, 350/350C Automatic Transmission
- 700-R4 Automatic Transmission
- Disassemble
- Subassembly Service
- Case & Internal Components
- Case Assembly Inspection
- Check Valve Retainer & Ball Assembly
- Clutch Air Check
- Forward Clutch Sprag Assembly
- Inner Manual Linkage
- Input Carrier & Sun Gear
- Input Clutch Assembly
- 700-R4 Transmission
- Low & Reverse Clutch Assembly
- Low/Reverse Support Assembly
- Oil Pump Cover & Body Assembly
- Oil Pump Cover Assembly
- Oil Pump Cover Disassemble
- Parking Pawl
- Pump Body Assembly
- Pump Body Disassembly
- Reaction Internal Gear & Carrier Assembly Inspection
- Reaction Internal Gear & Support
- Reaction Sun Gear & Shell
- Reverse Input & Input Clutches
- Reverse Input Clutch Assembly
- Third Accumulator Retainer & Ball Assembly
- Transmission Endplay Check
- 2-4 Band Assembly
- 3-4 Clutch Piston Travel Check
- External Components
- Case & Internal Components
- Procedures
- Diagrams
- Diagram Information and Instructions
- Diagnostic Aids
- Exploded Views
- Electrical Diagrams
- Fluid Diagrams
- 4L60 (700-R4) Automatic Transmission
- 200-4R Automatic Transmission
- Specifications
- Technical Service Bulletins
- Clutch
- Continuously Variable Transmission/Transaxle
- Differential Assembly
- Drive Axles, Bearings and Joints
- Drive/Propeller Shafts, Bearings and Joints
- Flex Plate
- Manual Transmission/Transaxle
- Sensors and Switches - Transmission and Drivetrain
- Transfer Case
- Transmission Control Systems
- Diagrams
- Specifications
- Technical Service Bulletins
- Brakes and Traction Control
- Starting and Charging
- Sensors and Switches - Starting and Charging
- Battery
- Charging System
- Starting System
- Power and Ground Distribution
- Service Precautions
- Testing and Inspection
- Diagrams
- Specifications
- Technical Service Bulletins
- Power and Ground Distribution
- Steering and Suspension
- Heating and Air Conditioning
- Blower Motor
- Compressor HVAC
- Compressor Clutch Diode HVAC
- Evaporator Core
- Heater Core
- Hose/Line HVAC
- Refrigerant
- Refrigerant Oil
- Service Port HVAC
- Service Precautions
- Testing and Inspection
- Service and Repair
- Diagrams
- Specifications
- Technical Service Bulletins
- Restraints and Safety Systems
- Accessories and Optional Equipment
- Body and Frame
- Cruise Control
- Brake Switch (Cruise Control)
- Clutch Switch
- Cruise Control Servo
- Cruise Control Servo Cable
- Cruise Control Switch
- Cruise Control Vacuum Solenoid
- Sensors and Switches - Cruise Control
- Vacuum Pump
- Vehicle Speed Sensor/Transducer - Cruise Control
- Description and Operation
- Testing and Inspection
- Service and Repair
- Diagrams
- Technical Service Bulletins
- Instrument Panel, Gauges and Warning Indicators
- Ammeter Gauge
- Charge Lamp/Indicator
- Cigarette Lighter
- Clock
- Coolant Level Indicator Lamp
- Dashboard / Instrument Panel
- Dimmer Switch
- Fuel Gauge
- Fuel Gauge Sender
- Headlamp Reminder Indicator
- Instrument Cluster / Carrier
- Low Fuel Lamp/Indicator
- Malfunction Indicator Lamp
- Odometer
- Oil Level Warning Indicator
- Oil Pressure Warning Lamp/Indicator
- Sensors and Switches - Instrument Panel
- Speedometer Cable
- Speedometer Head
- Temperature Gauge
- Temperature Warning Lamp/Indicator
- Tire Monitoring System
- Transmission Shift Position Indicator Lamp
- Vacuum Gauge/Economy Meter
- Volt Meter Gauge
- Description and Operation
- Testing and Inspection
- Service and Repair
- Diagrams
- Technical Service Bulletins
- Lighting and Horns
- Windows and Glass
- Wiper and Washer Systems
- Application and ID
- Regular Production Option (RPO)
- Vehicle Identification Number (VIN)
- Description
- GM Automobile VIN Charts
- GM Light Duty & Multi-Purpose Truck VIN Charts
- 1982 Light Duty Trucks & Multi-Purpose Vehicle
- 1983 Light Duty Trucks & Multi-Purpose Vehicle
- 1984 Light Duty Trucks & Multi-Purpose Vehicle
- 1985 Light Duty Trucks & Multi-Purpose Vehicle
- 1986 Light Duty Trucks & Multi-Purpose Vehicle
- 1987 Light Duty Trucks & Multi-Purpose Vehicle
- 1988 Light Duty Trucks & Multi-Purpose Vehicle
- 1989 Light Duty Trucks & Multi-Purpose Vehicle
- 1990 Light Duty Trucks & Multi-Purpose Vehicles
- 1991 Light Duty Trucks & Multi-Purpose Vehicles
- 1992 Light Duty Trucks & Multi-Purpose Vehicles
- 1993 Light Duty Trucks & Multi-Purpose Vehicles
- 1994 Light Duty Trucks & Multi-Purpose Vehicles
- 1995 Light Duty Trucks & Multi-Purpose Vehicles
- 1996 Light Duty Trucks & Multi-Purpose Vehicles
- GM Medium & Heavy Duty Truck VIN Charts
- 1982 Medium & Heavy Duty Trucks
- 1983 Medium & Heavy Duty Trucks
- 1984 Medium & Heavy Duty Trucks
- 1985 Medium & Heavy Duty Trucks
- 1986 Medium & Heavy Duty Trucks
- 1987 Medium & Heavy Duty Trucks
- 1988 Medium & Heavy Duty Trucks
- 1989 Medium & Heavy Duty Trucks
- 1990 Medium & Heavy Duty Trucks
- 1991 Medium & Heavy Duty Trucks
- 1992 Medium & Heavy Duty Trucks
- 1993 Medium & Heavy Duty Trucks
- 1994 Medium & Heavy Duty Trucks
- 1995 Medium & Heavy Duty Trucks
- 1996 Medium & Heavy Duty Trucks
- Locations
- Diagrams
- Diagram Information and Instructions
- Diagnostic Aids
- Exploded Views
- Connector Views
- Electrical Diagrams
- Cell References
- Antenna
- Cruise Control
- Heated Glass Element
- Heating and Air Conditioning
- Instrument Panel, Gauges and Warning Indicators
- Lighting and Horns
- Mirrors
- Power Locks
- Powertrain Management
- Radio, Stereo, and Compact Disc
- Seats
- Starting and Charging
- Transmission and Drivetrain
- Trunk / Liftgate
- Windows
- Wiper and Washer Systems
- Fluid Diagrams
- Automatic Transmission/Transaxle
- 4L60 (700-R4) Automatic Transmission
- 200-4R Automatic Transmission
- Engine Lubrication
- Automatic Transmission/Transaxle
- Vacuum and Vapor Hose Diagrams
- Components
- Connectors
- Fuse and Fusible Links
- Grounds
- Specifications
- Electrical Specifications
- Air Temperature Sensor ( Ambient / Intake )
- Alternator
- Barometric Pressure Sensor
- Battery
- Coolant Temperature Sensor/Switch (For Computer)
- Fuel Injector
- Idle Speed/Throttle Actuator - Electronic
- Ignition Coil
- Ignition Timing
- Manifold Pressure/Vacuum Sensor
- Mixture Control Solenoid
- Pick-Up Coil, Ignition
- Throttle Position Sensor
- Voltage Regulator
- Mechanical Specifications
- Alignment
- Brake Drum
- Brake Master Cylinder
- Brake Rotor/Disc
- Distributor, Ignition
- Engine
- Firing Order
- Fuel Delivery and Air Induction
- Pick-Up Coil, Ignition
- Spark Plug
- Starting and Charging
- Transmission and Drivetrain
- System Specifications
- Automatic Transmission/Transaxle
- Clutch Linkage
- Flex Plate
- Wheel Cylinder
- Wheel Stud / Lug Nut
- Pressure, Vacuum and Temperature Specifications
- Capacity Specifications
- Fluid Type Specifications
- Electrical Specifications
- Technical Service Bulletins
Diagnostic Trouble Codes