For 1990-2009 cars

# LOSS OF POWER/BACKFIRE WORN CAMSHAFT AND/OR LIFTERS

SOME 1982 AND 1983 CADILLACS EQUIPPED WITH AN HT4100 ENGINE MAY EXPERIENCE A LACK OF POWER AND/OR BACKFIRING CONDITION. THIS CONDITION MAY BE CAUSED BY A WORN CAMSHAFT AND/OR LIFTER. WHEN SERVICING A VEHICLE FOR THIS CONDITION, A CAMSHAFT KIT (P/N 1628822) HAS BEEN RELEASED. THIS KIT CONTAINS THE FOLLOWING PARTS: QUANTITY PART NAME 1 CAMSHAFT 16 LIFTERS 1 4 OUNCE BOTTLE OF CAMSHAFT PRELUBE WHEN REPLACING THE CAMSHAFT AND LIFTERS, BE SURE TO PRELUBE THE CAMSHAFT BEARING JOURNALS, LOBES, DISTRIBUTOR DRIVE GEAR, AND THE LIFTER FEET. ALWAYS CHANGE THE ENGINE OIL AND FILTER AFTER REPLACING THE CAMSHAFT AND LIFTERS.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.