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 1991 Chevrolet Blazer, both ongoing and closed, are listed below:

1. INVESTIGATION: ENGINE COMPARTMENT FIRES

   NHTSA #EA94029

   Status:

   CLOSED

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2. INVESTIGATION: REAR SEAT BELT FAILURE

   NHTSA #EA95031

   Status:

   CLOSED

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4. INVESTIGATION: ABS BRAKING SYSTEM

   NHTSA #EA94038

   Status:

   RECALLED

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5. INVESTIGATION: ABS BRAKING SYSTEM FAILS

   NHTSA #PE94046

   Status:

   CLOSED

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6. INVESTIGATION: BRAKE FAILURE

   NHTSA #EA91028

   Status:

   CLOSED

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7. INVESTIGATION: BRAKE FAILURE

   NHTSA #PE91052

   Status:

   CLOSED

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8. INVESTIGATION: HIGH IDLE FLARE

   NHTSA #EA92015

   Status:

   CLOSED

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9. INVESTIGATION: HIGH IDLE FLARE

   NHTSA #PE92001

   Status:

   CLOSED

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