Parts Information
Dealers will be preshipped High Altitude Compensator (HAC) valve kits (with no delivery charge) equivalent to 35% of their involved vehicles beginning on December 6, 1993. EBCV kits will not be preshipped.Additional carts required to perform this campaign are to be obtained from General Motors Service Parts Operations (GMSPO). To ensure these parts will be obtained as soon as possible, they should be ordered from GMSPO on a "C.I.O." order with no special instruction code, but on an advise code (2).