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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 238 (Gm Vehicles Cautions & Notices) >> Cautions & Notices >> Emission Modification Notice

Emission Modification Notice

WARNING: This page does not describe the selected car, but rather 249 other vehicles, including the 2004 Saturn Vue, 2004 Saturn L300, 2004 Saturn Ion Red Line, 2004 Saturn Ion 3, and 2004 Saturn Ion 2. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Modifications made to the following can affect the vehicle's emission controls & may cause the Malfunction Indicator Lamp (MIL), Check Engine or Service Engine Soon lamp to illuminate:
  • The engine.
  • The transmission.
  • The exhaust.
  • The fuel system.

Replacement tires that do not meet the same Tire Performance Criteria (TPC) of the original tires can also affect the vehicle's emission controls. This may also cause the Malfunction Indicator Lamp (MIL), Check Engine or Service Engine Soon lamp to illuminate.

Modifications to these systems or the installation of incorrect TPC tires could lead to repairs that are not covered by the manufacturer's warranty. This may also cause a required Emission Inspection/Maintenance test to fail.

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