GM Service Manual Online
For 1990-2009 cars only

This section outlines the Emission Warranty that GM provides for your vehicle, in accordance with the U.S. Federal Clean Air Act. Defects in material or workmanship in GM emission parts may also be covered by the "Bumper-to-Bumper" coverage. There may be additional coverage on GM diesel engine vehicles. In any case, the warranty with the broadest coverage applies.

What Is Covered

The parts covered under the Emission Control Systems warranties are listed under "Emission Warranty Parts List" later in this section.

What Is Not Covered

The Emission Control Systems warranties obligations do not apply to conditions resulting from tampering, abuse, neglect, or improper maintenance; or any other items listed under "What is not Covered" in the New Vehicle Warranty. The "Other Terms" presented in the New Vehicle Limited Warranty also apply to the emission related warranties.

Warranty Period

Both the Emission Defect warranty and the Emission Performance warranty described below begin on the date the vehicle is first delivered or put into use and continue for a period of 2 years or 24,000 miles, whichever occurs first. If a catalytic converter or powertrain control module is found to be defective under either or these warranties, those parts are warranted for 8 years or 80,000 miles.

Emission Control Systems Warranties

Emission Defect Warranty

GM warrants to the owner the following:

    • The vehicle was designed, built, and equipped so as to conform at the time of sale with the applicable regulations of the Federal Environmental Protection Agency (EPA).
    • The vehicle is free from defects in material and workmanship which cause the vehicle to fail to conform with those regulations during the emission warranty period.

Emission related defects in the genuine GM parts listed under the Emission Warranty Parts List, including related diagnostic costs, parts and labor are covered by this warranty.

Emission Performance Warranty

Some states and/or local jurisdictions have established periodic vehicle Inspection and Maintenance (I/M) programs to encourage proper maintenance of your vehicle. If an EPA-approved I/M program is enforced in your area, you may also be eligible for Emission Performance Warranty coverage when all of the following conditions are met:

    • The vehicle has been maintained and operated in accordance with the instructions for proper maintenance and use set forth in the Owner Manual and the Warranty and Maintenance Schedule booklets supplied with your vehicle.
    • The vehicle fails an EPA-approved I/M test during the emission warranty period.
    • The failure results, or will result, in the owner of the vehicle having to bear a penalty or other sanctions, including the denial of the right to use the vehicle, under local, state, or federal law.

If all of these conditions are met, GM warrants that your dealer will replace, repair, or adjust to GM specifications, at no charge to you, any of the parts listed under the "Emission Warranty Parts List" later in this section, or parts thereof, which may be necessary to cause your vehicle to conform to the applicable emission standards. Non-GM parts labeled "Certified to EPA Standards" are also covered by this warranty.

Emission Warranty Parts List

The parts that may affect your vehicle's emissions are on the following pages. These emission parts are covered under emission warranties as follows:

Powertrain Control System

ABS Control Module

Camshaft Position Actuator

Camshaft Position Actuator Valve

Coolant Level Sensor

Data Link Connector

Electronic Throttle Control (ETC) Motor

Engine Control Module (ECM)

Engine Coolant Temperature Sensor

Fast Idle Solenoid

Flexible Fuel Sensor

Fuel Control Module

Intake Air Temperature Sensor

Malfunction Indicator Lamp

Manifold Absolute Pressure Sensor

Mass Air Flow Sensor

Oil Pressure Sensor (DoD™ only)

Oxygen Sensors

Powertrain Control Module (PCM)

Programmable Read Only Memory (PROM)

Throttle Position Sensor

Throttle Position Switch

Vehicle Control Module (VCM)

Vehicle Speed Sensor

Wheel Speed Sensor

Transmission Controls and Torque Management

GMLAN (CAN) Communications Circuit

Manual Transmission Clutch Switch

Park/Neutral Switch

Torque Converter Clutch Solenoids

Torque Converter Clutch Switch

Transmission Control Module

Transmission Fluid Temperature Sensor

Transmission Gear Selection Switch (Diesel)

Transmission Internal Mode Switch

Transmission Pressure Control Solenoids

Transmission Pressure Switches

Transmission Shift Solenoids

Transmission Speed Sensors

Fuel Management System

Common Rail Assembly (6.6L DURAMAX® Diesel)

Diesel Fuel Injection Pump

Diesel Fuel Injection Pump Timing Adjust

Diesel Fuel Injector Control Module - EDU (6.6L DURAMAX® Diesel)

Diesel Fuel Temperature Sensor

Direct Fuel Injector Assembly (6.6L DURAMAX® Diesel)

Fuel Injector

Fuel Pressure Regulator

Fuel Rail Assembly

Fuel Rail Pressure Sensor

Function Block (6.6L DURAMAX® Diesel)

High Pressure Fuel Pump (SIDI)

Air Management System

Air Cleaner

Air Cleaner Diaphragm Motor

Air Cleaner Resonator

Air Cleaner Temperature Compensator Valve

Air Intake Ducts

Charge Air Control Actuator

Charge Air Control Solenoid Valve

Charge Air Control Valve

Charge Air Cooler

Charge Air Cooler Fan

Idle Air Control Valve

Idle Speed Control Motor

Intake Manifold

Intake Manifold Gasket (7/70 Only Uplander, Montana SV6, and DURAMAX® Diesel)

Intake Manifold Heater

Intake Manifold Tuning Valve

Intake Manifold Tuning Valve Relay

Supercharger Assembly

Throttle Body (Replacement Only)

Throttle Body Heater

Throttle Closing Dashpot

Turbocharger Assembly

Turbocharger Boost Sensor

Turbocharger Oil Separator

Turbocharger Thermo Purge Switch

Vacuum Pump (6.6L DURAMAX® Diesel)

Ignition System

Camshaft Position Sensor(s)

Crankshaft Position Sensor(s)

Distributor

Distributor Cap

Distributor Pick Up Coil

Distributor Rotor

Glow Plug(s) (Diesel)

Glow Plug Controller (Diesel)

Glow Plug Relay (Diesel)

Ignition Coil(s)

Ignition Control Module

Ignition Timing Adjustment

Knock Sensor

Spark Plug Wires

Spark Plugs

Catalytic Converter System

Catalytic Converter(s) and Muffler if attached as assembly

Diesel Exhaust Temperature and Pressure Sensors

Diesel Particulate Filter (DPF)

Exhaust Manifold (7/70 Only Corvette 7.0L, Equinox, Torrent, Uplander, Montana SV6, Cadillac DTS 4.6L and XLR, (Impala and Grand Prix 5.3L right side) and C/K Trucks < 14,000 GVWR 8.1L)

Exhaust Manifold with Catalytic Converter attached as assembly

Exhaust Manifold Gasket

Exhaust Pipes and/or Mufflers (when located between catalytic converters and exhaust manifold)

Positive Crankcase Ventilation System

Oil Filler Cap

PCV Filter

PCV Oil Separator

PCV Valve

Exhaust Gas Recirculation System

EGR Feed and Delivery Pipes or Cast-in Passages

EGR Valve

EGR Valve Cooler (6.6L DURAMAX® Diesel)

EGR Vacuum Pump Assembly (6.6L DURAMAX® Diesel)

Secondary Air Injection System

Air Pump

Check Valves

Evaporative Emission Control System (Gasoline Engines)

Canister

Canister Purge Solenoid Valve

Canister Vent Solenoid

Fuel Feed and Return Pipes and Hoses

Fuel Filler Cap

Fuel Level Sensor

Fuel Limiter Vent Valve

Fuel Tank(s)

Fuel Tank Filler Pipe (with restrictor)

Fuel Tank Vacuum or Pressure Sensor

Hybrid

Auxiliary Transmission Fluid Pump

Battery Cooling Fan

Battery Pack Control Module (BPCM)

Battery Pack Current Sensor

Brake Pedal Travel Sensor

Drive Motors A and B

Drive Motor A and B Resolvers

Drive Motor/Generator Control Module (DMCM - HCP, MCPA, MCPB)

Electro-Hydraulic Brake Control Module (EBCM)

Energy Storage Control Module

Fuel Filler Pipe Adapter Seal

Hybrid Batteries

Hybrid Battery Temperature Sensors

Hybrid Battery Voltage Sensors

SGCM Coolant Circuit (fan and fan relay and pump)

Starter Generator Control Module

Transmission Friction Elements

Transmission Substrate Temperature Sensor

Miscellaneous Items Used with Above Components are Covered

Belts

Boots

Clamps

Connectors

Ducts

Fittings

Gaskets

Grommets

Hoses

Housings

Mounting Hardware

Pipes

Pulleys

Sealing Devices

Springs

Tubes

Wiring

Parts specified in your maintenance schedule that require scheduled replacement are covered up to their first replacement interval or the applicable emission warranty coverage period, whichever comes first. If failure of one of these parts results in failure of another part, both will be covered under the Emission Control System Warranty.

Parts specified in your maintenance schedule as requiring scheduled replacement are covered up to their first replacement interval or the applicable emission warranty coverage period, whichever comes first. If failure of one of these parts results in failure of another part, both will be covered under the Emission Control System Warranty.

Parts specified in your maintenance schedule that require scheduled replacement are covered up to their first replacement interval or the applicable emission warranty coverage period, whichever comes first. If failure of one of these parts results in failure of another part, both will be covered under the Emission Control System Warranties.

For detailed information concerning specific parts covered by these emission control systems warranties, ask your dealer.

General Motors of Canada Limited warrants to owners of passenger cars, light duty trucks and vans sold in Canada, that the vehicle (1) was designed, built and equipped so as to conform at the time of sale with the Emission Regulations under the Canadian Environmental Protection Act and (2) is free from defects in material and workmanship which cause the vehicle to fail to conform with those regulations for a period of the coverage outlined below.

How to Determine the Applicable Emission Control System Warranty

Federal or provincial agencies may require different emission control system warranties for light duty trucks depending on whether the truck is certified with a light duty or heavy duty emission control system.

Do the following to determine emission eligibility:

  1. Determine if the vehicle is equipped with a gasoline or diesel engine.
  2. Locate the underhood emission control label located inside the engine compartment on the air cleaner assembly or the engine.
  3. The language on the bottom left side of the label will describe if the vehicle is equipped with a light or heavy duty emissions control system.

Emission Control Warranty

The Emission Control Systems Warranty period described below shall begin on the date the vehicle is first delivered to the first retail purchaser or, on the date the vehicle is first placed in service as a demonstrator or company vehicle prior to sale at retail. Emission related defects in the genuine GM components including related diagnostic costs, parts and labour, are covered by this warranty.

    • Passenger Cars, Light Duty Trucks (A Gross Vehicle Weight Rating (GVWR) of 3856 kg (8500 lbs) or less) and Vans Equipped with Light Duty Gasoline Engine
       - For Chevrolet, Pontiac, and GMC, 3 year or 60 000 kilometres whichever comes first; for Buick and Hummer, 4 year or 80 000 kilometres whichever comes first on the Components in the Emission Control Systems Warranty Parts List; and 8 years or 130 000 kilometres, whichever comes first, on the Specified Major Emission Components.
    • Light Duty Truck (A Gross Vehicle Weight Rating (GVWR) of 3856 kg (8500 lbs) or greater) Equipped with Heavy Duty Gasoline Engine
       - 5 years or 80 000 kilometres, whichever comes first.
    • Light Duty Truck (A Gross Vehicle Weight Rating (GVWR) of 3856 kg (8500 lbs) or greater) Equipped with Heavy Duty Diesel Engine
       - 5 years or 80 000 kilometres, whichever comes first.

Emission Performance

Some provinces and local jurisdictions have established periodic vehicle Inspection and Maintenance (I/M) programs to encourage proper maintenance of your vehicle. If a provincial I/M program is enforced in your area you may also be eligible for Emission Performance coverage when all of the following three conditions are met:

  1. The vehicle has been maintained and operated in accordance with the instructions for proper maintenance and use set forth in the Owner Manual and the New Vehicle Limited Warranty, Maintenance and Owner Assistance Information booklet supplied with your vehicle;
  2. The vehicle fails a provincial I/M test during the emission warranty period indicated above; and
  3. The failure results, or will result, in the owner of the vehicle having to bear a penalty or other sanctions (including the denial of the right to use the vehicle) under local, provincial, or federal law.

General Motors of Canada Limited warrants that your dealer will replace, repair, or adjust to GM specifications, at no charge to you, any of the parts listed under the "Emission Warranty Parts List" later in this section which may be necessary to conform to the applicable emission standards. Non-GM parts labelled "Certified to EPA Standards" are covered by the Federal Emission Performance Warranty.

Claims Procedure

Make your vehicle available to any authorized GM dealer as soon as possible after failing a provincial I/M test or at any time you suspect a defect in a part. If all the above conditions are met, GM warrants that your dealer will replace, repair, or adjust to GM specifications, at no charge to you, any of the parts listed under "Emission Control Systems Warranty Parts List" which may be necessary to cause your vehicle to conform to the applicable emission standards.

Repairs which do not qualify will be charged to you.

In the event a warranty matter is not handled to your satisfaction, refer to the Customer Satisfaction Procedure in this booklet under Owner Assistance .

Emission Control Systems Warranty Parts List

Listed below are most of the systems that affect emissions of your vehicle. Emission control components of these systems are covered by the Emission Control Systems Warranty as applicable, or up to the replacement interval specified in your Owner's Manual.

Powertrain Control System

Antilock Brake System (ABS) Control Module *

Malfunction Indicator Lamp

Camshaft Position Actuator

Manifold Absolute Pressure Sensor

Camshaft Position Actuator Valve

Mass Air Flow Sensor

Coolant Level Sensor

Oil Pressure Sensor (Active Fuel Management ™ (AFM) only)

Data Link Connector

Oxygen Sensors

Electronic Throttle Control (ETC) Motor

Powertrain Control Module (PCM) *

Engine Control Module (ECM) *

Programmable Read Only Memory (PROM)

Engine Coolant Temperature Sensor

Throttle Position Sensor

Fast Idle Solenoid

Throttle Position Switch

Flexible Fuel Sensor

Vehicle Control Module (VCM) *

Fuel Control Module *

Vehicle Speed Sensor

Intake Air Temperature Sensor

Wheel Speed Sensor


Fuel Management System

Common Rail Assembly (6.6L  Duramax® Diesel)

Fuel Injector

Diesel Fuel Injection Pump

Fuel Pressure Regulator

Diesel Fuel Injection Pump Timing Adjust

Fuel Rail Assembly

Diesel Fuel Injector Control Module - EDU (6.6L Duramax® Diesel)

Fuel Rail Pressure Sensor

Diesel Fuel Temperature Sensor

Function Block (6.6L Duramax® Diesel)

Direct Fuel Injector Assembly (6.6L Duramax® Diesel)

High Pressure Fuel Pump (SIDI)


Catalytic Converter System

Catalytic Converter(s) and muffler if attached as assembly *

Exhaust Manifold with Catalytic Converter attached as assembly *

Diesel Exhaust Temperature and Pressure Sensors

Exhaust Manifold Gasket

Diesel Particulate Filter (DPF)

Exhaust pipes and/or mufflers when located between converter and exhaust manifold

Exhaust Manifold (7/70 Only Corvette 7.0L, Equinox, Torrent, Uplander, Montana SV6, Cadillac DTS 4.6L and XLR, (Impala & Grand Prix 5.3L right bank) and C/K Truck <14,000 GVWR 8.1L)

 


Transmission Controls and Torque Management

GMLAN (CAN) Communications Circuit

Transmission Gear Selection Switch (Diesel)

Manual Transmission Clutch Switch

Transmission Internal Mode Switch

PARK(P)/NEUTRAL(N) Switch

Transmission Pressure Control Solenoids

Torque Converter Clutch Solenoids

Transmission Pressure Switches

Torque Converter Clutch Switch

Transmission Shift Solenoids

Transmission Control Module *

Transmission Speed Sensors

Transmission Fluid Temperature Sensor

 


Air Management System

Air Cleaner

Intake Manifold Gasket (7/70 only Uplander, Montana SV6, & Duramax Diesel)

Air Cleaner Diaphragm Motor

Intake Manifold Heater

Air Cleaner Resonator

Intake Manifold Tuning Valve

Air Cleaner Temperature Compensator Valve

Intake Manifold Tuning Valve Relay

Air Intake Ducts

Supercharger Assembly

Charge Air Control Actuator

Throttle Body (Replacement Only)

Charge Air Control Solenoid Valve

Throttle Body Heater

Charge Air Control Valve

Throttle Closing Dashpot

Charge Air Cooler

Turbocharger Assembly

Charge Air Cooler Fan

Turbocharger Boost Sensor

Idle Air Control Valve

Turbocharger Oil Separator

Idle Speed Control Motor

Turbocharger Thermo Purge Switch

Intake Manifold

Vacuum Pump (6.6L Diesel)


Ignition System

Camshaft Position Sensor(s)

Glow Plug Relay (Diesel)

Crankshaft Position Sensor(s)

Ignition Coil(s)

Distributor

Ignition Control Module

Distributor Cap

Ignition Timing Adjustment

Distributor Pickup Coil

Knock Sensor

Distributor Rotor

Spark Plug Wires

Glow Plug(s) (Diesel)

Spark Plugs

Glow Plug Controller (Diesel)

 


Evaporative Emission Control System (Gasoline Engines)

Canister

Fuel Level Sensor

Canister Purge Solenoid Valve

Fuel Limiter Vent Valve

Canister Vent Solenoid

Fuel Tank(s)

Fuel Feed and Return Pipes and Hoses

Fuel Tank Filler Pipe (with Restrictor)

Fuel Filler Cap

Fuel Tank Vacuum Sensor or Pressure Sensor


Positive Crankcase Ventilation System

Oil Filler Cap

PCV Oil Separator

PCV Filter

PCV Valve


Exhaust Gas Recirculation System

EGR Feed and Delivery Pipes or Cast-In Passages

EGR Valve Cooler (6.6L DURAMAX® Diesel)

EGR Valve

EGR Vacuum Pump Assembly (6.6L DURAMAX® Diesel)


Secondary Air Injection System

Air Pump

Check Valves


Hybrid

Auxiliary Transmission Fluid Pump

Fuel Filler Pipe Adapter Seal

Battery Cooling Fan

Hybrid Batteries

Battery Pack Control Module (BPCM) *

Hybrid Battery Temperature Sensor

Battery Pack Current Sensor

Hybrid Battery Voltage Sensors

Brake Pedal Travel Sensor

SGCM Coolant Circuit (fan and fan relay and pump)

Drive Motor/Generator Control Module (DMCM - HCP, MCPA, MCPB) *

Starter Generator Control Module *

Drive Motors A and B

Traction Power Inverter Module

Drive Motor A and B Resolvers

Transmission Friction Elements

Electro-Hydraulic Brake Control Module *

Transmission Substrate Temperature Sensor

Energy Storage Control Module *

 


Miscellaneous Items Used in Above Components are Covered

Belts

Housings

Boots

Mounting Hardware

Clamps

Pipes

Connectors

Pulleys

Ducts

Sealing Devices

Fittings

Springs

Gaskets

Tubes

Grommets

Wiring

Hoses

 

If failure of one of the above parts results in failure of another part under the Emission Control Systems Warranty, both will be covered by this warranty. For detailed information concerning specific parts covered by the Emission Control Systems Warranty, ask your dealer.

* Specified Major Emission Components: 8 years/130 000 kilometres, whichever comes first.

What Is Not Covered

The Emission Control Systems Warranty Obligations DO NOT APPLY TO conditions resulting from tampering, abuse, neglect, or improper maintenance. Items listed under "What is Not Covered" under General Motors of Canada Limited New Vehicle Limited Warranty also apply to the emission related warranties.

Parts specified in your maintenance schedule as requiring scheduled replacement are covered up to their first replacement interval or the applicable emission warranty coverage period, whichever comes first. There is no coverage under this warranty for the failure of parts which are not replaced as required in the owner maintenance schedule. If failure of one of these parts results in failure of another part, neither will be covered under the Emission Control Systems Warranty.

For detailed information concerning specific parts covered by these emission control systems warranties, ask your dealer.

THE "OTHER TERMS" PRESENTED IN THE NEW VEHICLE LIMITED WARRANTY ALSO APPLY TO THIS WARRANTY.