Recall 92V127000: Vacuum Brake System

THE BRAKE PEDAL ASSEMBLY HAS A PUSHROD PIN THAT IS TOO SMALL AND IT IS INSTALLED IN THE WRONG POSITION, CAUSING AN INCREASED BRAKE PEDAL RATIO AND A DECREASED MASTER CYLINDER STROKE. THE REDUCED MASTER CYLINDER STROKE RESULTS IN FAILURE TO MEET THE PARTIAL SYSTEM FAILURE REQUIREMENTS OF FMVSS 105, "HYDRAULIC BRAKE SYSTEMS". A FURTHER REDUCTION IN BRAKING ABILITY AT A TIME WHEN PARTIAL SYSTEM FAILURE HAS OCCURRED COULD RESULT IN A VEHICLE CRASH. REPLACE THE BRAKE ASSEMBLY.

SYSTEM: BRAKES: BRAKE PEDAL ASSEMBLY; FMVSS 105.

VEHICLE DESCRIPTION: VANS EQUIPPED WITH VACUUM POWER BRAKES.

NOTE: FMVSS 105 REQUIRES THAT HYDRAULIC BRAKE SYSTEMS HAVE AN EMERGENCY FEATURE WHICH STOPS THE VEHICLE UNDER SPECIFIED CONDITIONS. ALL HYDRAULIC BRAKE SYSTEMS ARE DESIGNED WITH A SPLIT SYSTEM. EACH SPLIT WORKS INDEPENDENTLY FROM THE OTHER.THE PARTIAL SYSTEM FAILURE TEST OF THE FMVSS IS PERFORMED WITH ONE OF THE SPLIT SYSTEMS INOPERATIVE.

1992 CHEVROLET TRUCK G10
1992 CHEVROLET TRUCK G20
1992 CHEVROLET TRUCK G30
1992 GMC G15
1992 GMC G25
1992 GMC G35