1983 Gmc P6t042 Recalls

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NHTSA Campaign Number: 84V134000
Manufacturer: GENERAL MOTORS LLC
Manufactured Begin Date: November 1st, 1981
Manufactured End Date: April 1st, 1984
Date of Owner Notification: October 26th, 1984

Defect Summary:
VEHICLES HAVE A PRIMARY AND A RESERVE BRAKING SYSTEM. IF THE PRIMARY BRAKE SYSTEM BOOSTER FAILS, UNDER SOME CIRCUMSTANCES THE RESERVE SYSTEM MAY ALSO MALFUNCTION AND BRAKING ABILITY WILL BE IMPAIRED.

Corrective Summary:
DEALER WILL INSTALL A NEW RESERVE BRAKE CONTROL MODULE AT NO COST TO OWNER.

Recall Notes:
VEHICLE DESCRIPTION: SCHOOL BUSES AND FORWARD CONTROL CHASSIS TRUCKS EQUIPPEDWITH HYPOWER DUAL HYDRAULIC BRAKE SYSTEMS.SYSTEM: SERVICE BRAKES; HYDRAULIC BRAKE SYSTEM, RESERVE BRAKES SYSTEMELECTRONIC CONTROL MODULE.CONSEQUENCES OF DEFECT: A REDUCTION OF BRAKING ABILITY IN A SITUATION WHENMINIMUM STOPPING DISTANCE IS REQUIRED COULD RESULT IN AN ACCIDENT WITHOUT PRIORWARNING.

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NHTSA Campaign Number: 84V068000
Manufacturer: GENERAL MOTORS LLC
Manufactured Begin Date: December 1st, 1979
Manufactured End Date: March 1st, 1983
Date of Owner Notification: June 18th, 1984

Defect Summary:
UNWANTED AIR IS BEING DRAWN INTO THE BRAKE SYSTEM WHEN BRAKE PEDAL IS RELEASED. THIS IS DUE TO THE USE OF THE BENDIX MASTER CYLINDER IN COMBINATION WITH THE BENDIX HYDROVAC.

Corrective Summary:
DEALER WILL CHECK TO SEE IF VEHICLE IS EQUIPPED WITH A BENDIX MASTER CYLINDER. IF SO, DEALER WILL INSTALL A TUBE AND HOSE ASSEMBLY AND REPAIR BRAKE SYSTEM. IF NEEDED, A NEW WAGNER MASTER CYLINDER WILL BE INSTALLED.

Recall Notes:
VEHICLE DESCRIPTION: MEDIUM TRUCKS EQUIPPED WITH SINGLE HYDRAULIC BRAKESYSTEMS.SYSTEM: SERVICE BRAKES; HYDRAULIC SYSTEM.CONSEQUENCES OF DEFECT: THE COMBINATION OF THIS DEFECT ALONG WITH EVERYDAY USEAND NORMAL WEAR, COULD RESULT IN DECREASED BRAKE PERFORMANCE AND EVENTUAL LOSSOF BRAKES. AN ACCIDENT COULD RESULT.