Some of the subject vehicles may be perceived by some customers as having increased pedal effort.
Normal service procedures should be followed to address this condition. In the event this does not satisfy the customer, replace the power brake vacuum booster, using P/N 3492631 and bleed the brake system. Parts are currently available from GMSPO.
Labor Operation Number: H1220
Labor Time : 1.0 Hour
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.