1967 GMC EM4500 Recalls (2)

Campaign:: 67V035000 on 10/11/1979
Component:: Service brakes, hydraulic:foundation components:master cylinder
Affected:: 67
Notes:: Possibility that an incorrect master cylinder assembly was installed in the brake system.as a result, excessively high brake pedal effort may be required to obtain a satisfactory stopping distance.(replace brake master cylinder with improved design.)
Campaign:: 67V088000 on 10/11/1979
Component:: Service brakes, hydraulic:power assist
Affected:: 4,589
Notes:: Possibility that an improperly spot welded power brake booster diaphragm plate could result in a separation of the diaphragm form the plate.this condition could cause a loss of power assist when braking, resulting in higher than normal brake pedal effort.(install a new diaphragm plate assembly.)