GM Service Manual Online
For 1990-2009 cars only

REVISED AIR COMPRESSOR OIL SUPPLY HOSE IS NOW AVAILABLE

INSTANCES OF HOSE RUPTURE LEADING TO OIL RESERVOIR SUPPLY DISCHARGE AND EVENTUAL ENGINE DAMAGE HAVE BEEN REPORTED. HOSE, P/N 3757075, IS BEING REVIEWED FOR DESIGN INTEGRITY AS A RESULT OF SEVERAL ENGINE FAILURES BROUGHT TO OUR ATTENTION. HOSES INSPECTED ON CUSTOMERS' UNITS AND FOUND TO BE SUSPECT SHOULD BE REPLACED AND RETURNED TO PRODUCT SERVICE. REPORTS DOCUMENTING HIGH DEALERSHIP OR FLEET USAGE OF THE SUBJECT HOSE ARE ALSO REQUESTED. ENGINEERING HAS INITIATED CHANGES WHICH WILL REPLACE THE EXISTING HOSE WITH A HIGHER GRADE MATERIAL. THE FOLLOWING PART NUMBERS ARE INVOLVED IN THE PROPOSED IMPROVEMENT. P/N 375075 (8.2L) P/N 3902763 (3208 CAT.) REPLACEMENT OF THESE HOSES CAN BE ACCOMPLISHED BY UTILIZING A CUT TO LENGTH SECTION OF P/N 8885549, HOSE, AND (2) FITTINGS, P/N 791101. EFFECTIVE POINTS WILL BE PUBLISHED WHEN AN UPGRADED HOSE ASSEMBLY IS RELEASED FOR PRODUCTION.

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.