SERVICE MANUAL UPDATE SEC. 8A POWER DISTRIBUTION CHART. Cadillac Commercial Limo/Hearse Chassis 1991

For 1990-2009 cars

# SERVICE MANUAL UPDATE SEC. 8A POWER DISTRIBUTION CHART

#### SUBJECT: SERVICE INFORMATION MANUAL UPDATE - SECTION 8A, FUSE IDENTIFICATION AND CIRCUIT CORRECTIONS

Please update your 1991 DeVille and Fleetwood Service Information Manual, pages 8A-10-1, 8A-11-1, 8A-20-2, and 8DI-28 to include the following changes.

#### 8A-10-1:

Change MAXI-Fuse 4 that feeds circuit 1448 to MAXI-Fuse 3.

Change MAXI-Fuse 3, 40 amp that feeds circuit 1450 to MAXI-Fuse 5, 60 amp. The fuse locations, numbers, and ratings are correct on page 8A-10-0.

#### 8A-11-1:

Fuse 5 in the relay center is used to power the:

o Transmission shift solenoids A and B o EGR solenoid o Canister purge solenoid o Power steering switch o VCC brake switch o A/C compressor relay

The Fuse 5 power feeds on page 8A-11-1 are correct.

#### 8A-20-2 and 8D1-28:

The fuel pump prime circuit (circuit 490) is connected to splice S222, not pin 3, of the fuel pump relay.

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.