Some of the above vehicles, built prior to the breakpoint shown below, may exhibit a rub condition of the A/C hose to the underside of the hood. Use the following procedure to check and address this condition. (Figure 1 shows hose disassembled for clarification only).
1. Check the area of A/C hose, as indicated in Figure 1, to see if it is contacting the hood. If there is no evidence of hose contact to hood, no further action is needed.
2. If the hose is contacting the hood but has not rubbed through the outer coating of hose, loosen the nut (item #4) on the accumulator (item #5) and rotate the hose, in the direction indicated in Figure 1, to obtain clearance to the hood.
3. If the hose is rubbed through the outer coating, replace the hose assembly with one of the following service part numbers.
Year Part Number ---- ----------- 1988 10135634
1989 10135635
The 1989 breakpoint is as follows: VIN K5103849
Use most applicable Labour operation and time from the Canadian Labour Time Guide.
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.