A/C FUSE #12 DEFORMS FUSE BLOCK- REWIRE A/C HIGH BLOWER. Pontiac Optima (Canada) 1988

For 1990-2009 cars

# A/C FUSE #12 DEFORMS FUSE BLOCK- REWIRE A/C HIGH BLOWER

#### Models Affected: 1988 AND 1989 LEMANS

This bulletin cancels and replaces bulletin 89-1-17 issued 1/90. This bulletin is being revised to add step 9 and the Labor operation and labor time.

High electrical loads may cause the A/C fuse #12, 30 AMP, to deform the fuse block and make it difficult to install a new fuse.

To correct this condition, change the power source for the A/C high blower relay to reduce electrical load through fuse #12 as follows:

1. Disconnect the battery.

2. Lower the fuse box from the dash. (See Figure 1)

3. Remove the A/C and high blower relay holder. This holder has a yellow plastic housing.

4. Cut off the large yellow wire as close to the A/C relay as possible. This cavity has two yellow wires going into one terminal, only cut the large wire. (See Figure 2)

5. Install a 30 AMP heavy duty inline fuse to the large yellow wire that was cut.

6. Splice the other end of the inline fuse to the large solid red wire that goes to fuse #12. Solder connections as necessary and insulate the connections.

7. Remove fuse #12 and check that the electrical contacts are tight and make good contact to the fuse.

8. Reinstall fuse box.

9. Remove the yellow wire from the blower resistor connector insulate the terminal and tape it back to the harness.

Use labor operation: T3253 Labor Time 0.5 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.