INFO ON SERVICING 6.5L TURBO DIESEL (TURBO RETURN PROC.)

SUBJECT: INFORMATION ON SERVICING 6.5L TURBOCHARGED DIESEL ENGINE

VEHICLES AFFECTED: 1992 C/K TRUCKS WITH 6.5L (VIN F) ENGINE

The turbocharger on 1992 C/K trucks will be serviced as a complete assembly and complete turbocharger diagnostics are provided in the 1992 Service Manual. Turbocharger, P/N 12515808 along with installation check list may be ordered through the service parts organization.

Technical Assistance approval required prior to turbocharger removal.

The normal claim warranty system procedures will apply except that all turbochargers must be returned to G.M. Technical Assistance.

The following are procedures for returning the turbocharger assembly.

A). Complete the warranty return procedure report.

B). Provide a copy of repair order and Technical Assistance case number

C). The turbocharger assembly must be returned in the same box received via COURIER prepaid to the:

General Motors of Canada Technical Assistance Department 750 Park Rd. South Receiving Area 1000, OSHAWA, ONTARIO L1G 1K7 ATTN: Mr. Martin Galligan

Note: The wastegate canister/rod should be serviced separately and will not require the removal of the turbocharger.

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.