GM Service Manual Online
For 1990-2009 cars only

POWER STEERING PUMP PULLEY NUT TORQUE HAS BEEN INCREASED

THE POWER STEERING PUMP PULLEY NUT TORQUE HAS BEEN INCREASED FROM 38 NM (28 FT. LBS.) TO 61 NM (45 FT. LBS.) EFFECTIVE AS FOLLOWS: MODELS EFFECTIVE VIN MEDIUM DUTY 1GDE6D1A4CV587108 HEAVY DUTY 1GDS9C4C3CV585907

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.