The Office of Defects Investigations (ODI) is an office within the NHTSA which investigates serious safety problems in the design, construction or performance of vehicles. The NHTSA is authorized to order manufacturers to recall and repair vehicles, if the ODI finds a safety issue. NHTSA investigations for the 2004 GMC Envoy, both ongoing and closed, are listed below:

  1. INVESTIGATION: BRAKE LAMP FAILURE

    NHTSA #EA04021

    Status:
    RECALLED

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  2. INVESTIGATION: FUEL PUMP MODULE LEAKS GASOLINE

    NHTSA #EA07009

    Status:
    CLOSED

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