Parts Information & Service Procedure & Campaign Label Information

PARTS INFORMATION

Parts required to complete this modification are to be obtained from General Motors Service Parts Operations (GMSPO). To ensure these parts will be obtained as soon as possible, they should be ordered from (GMSPO) on a C.I.O. order with NO special instruction code, but on an advise code (2).

PART NUMBER DESCRIPTION QUANTITY/VEHICLE

12040835 Relay 2

12004011 30 Amp Fuse 2

25530882 Pressure/Warning 1 - As Required
Switch

25528401 Hydraulic Pump 1 - As Required
and Motor Assy.

It is anticipated that most vehicles will require a pressure/warning switch, but less than 20% will require a hydraulic pump and motor. Please adjust your orders accordingly for the hydraulic pump and motor assembly.

SERVICE PROCEDURE

1986 AND 1987 MODEL YEAR VEHICLES

1. Disconnect negative battery cable.

Figure 1:

Figure 2:

Figure 3:

2. Remove two (2) relay assemblies (P/N 12040835) from their respective brackets (See figures 1,2 & 3) and disconnect from electrical harness.
3. Reconnect electrical harness to new relay assemblies and install in original position. Torque bolts/screws to 3-4 N-m (27-35 in.lbs.)

RELAYS MUST BE INSTALLED WITH CONNECTOR AT BOTTOM TO PREVENT WATER ENTRY.

1986 MODEL YEAR VEHICLES ONLY

Figure 2:

Figure 3:

4. Replace both the pump motor 30 amp fuse and the ABS 30 amp main fuse (See figures 2 and 3).

CAUTION: FAILURE TO FULLY DEPRESSURIZE THE HYDRAULIC ACCUMULATOR BEFORE PERFORMING SERVICE OPERATIONS COULD RESULT IN INJURY TO SERVICE PERSONNEL AND DAMAGE TO PAINTED SURFACES.

Figure 5:

5. Visually inspect hydraulic pump and motor housing for any evidence of brake fluid seepage below pressure/warning switch. If any components require replacement, care should be taken to prevent brake fluid spillage onto motor (See figure 5).

A. If any evidence of brake fluid seepage is indicated, perform following steps as indicated in the 1987 Pontiac 6000 Service Manual pages 5E - 5, 6 & 7. If no seepage is indicated, proceed to step 5B.

Figure 4:

1. Replace hydraulic pump and motor assembly.

2. Inspect pressure/warning switch for red plastic identification band (See figure 4). If red band is observed, switch requires replacement. If red band is not observed, original switch must be transferred to replacement pump and motor assembly.

B. If there is no evidence of brake fluid seepage, inspect only pressure/warning switch for red plastic identification band (See figure 4). If red band is observed, switch requires replacement. Follow pressure switch replacement procedure in 1987 Pontiac Service Manual page 5E - 7. If red band is not observed, proceed to step 5C.
C. If visual inspection does not indicate any parts replacement except for relay and fuses (as applicable) replaced in steps 2 - 3, reconnect battery cable and proceed to step 7.

6. If pressure/warning switch is replaced, pump and motor assembly replacement; check fluid level in reservoir and ensure that it is filled to the mark. DO NOT OVERFILL OR UNDERFILL. Reconnect battery cable and turn ignition key to ON position until pump motor stops. Check for brake fluid leak.
NOTE: Use only DOT 3 brake fluid from a clean, sealed container. Do not use fluid from a container which is wet with water. Use of Dot 5 silicone fluid is not recommended. Internal damage to pump components may result.
If hydraulic pump motor assembly is replaced:

A. Fill reservoir with brake fluid. Connect battery cable.

B. Turn ignition key to ON position until pump motor stops.

C. Check for brake fluid leak.

D. Turn ignition key to OFF position and discharge accumulator. See Checking and Filling in 1987 Pontiac Service Manual page 5E - 3.

E. Ensure that the brake fluid resevoir is filled to the mark. Do not overfill or underfill.

1986 AND 1987 MODEL YEAR VEHICLES



7. Install Campaign Identification Label

CAMPAIGN IDENTIFICATION LABEL

Each vehicle modified in accordance with the instructions outlined in this Product Campaign Bulletin will require a "Campaign Identification Label". Each label provides a space to include the campaign number, the five digit dealer code of the dealer performing the campaign service, and the date vehicle was campaigned. This information may be inserted with a typewriter or ballpoint pen. Install the label only on a clean, dry surface of the radiator baffle where it is readily visible. (Additional campaign labels are available on stationery order as. Form 7901-709).