Service Procedure

A jumper wire will be furnished "no charge" for each vehicle by Chevrolet. Parts will be shipped directly to the involved dealers. Use the following instructions to install the new jumper wire.

In order to remove micro-pack terminals from the connector, a terminal removal tool will be required to perform this repair. Proper tool is Kent-Moore J-33095 or Burroughs BT-8234-A.
SERVICE PROCEDURE (CONT'D)

1. Disconnect negative battery cable.

2. Locate the ECM under the instrument panel on the passenger side of the vehicle. Disconnect both connectors from the ECM.

3. Locate and disconnect the instrument panel wiring interconnect taped to ECM harness.

FIGURE NO. 1A:

a. Locate the 151 Jumper wire terminals (.80 gage black) that are side by side in cavities D-9 and D-10 in the center of the 32-way ECM connector (with gray secondary locks), Figure No. 1A.

FIGURE 1B - 32 PIN ECM CONNECTOR:

4. Remove the gray comb secondary lock (using a pick) retaining the 151 wire terminal by releasing the lock tangs on the outside of the ECM connector at both points A and pulling the secondary lock out of the connector (Figure No. 1B).
SERVICE PROCEDURE

Removal of the 151 wire:

a. Grasp the wire seated in cavity D-9 and push the terminal to its forward most position.

FIGURE 2 - MICRO-PACK CONNECTOR:

b. Insert the micro-pack removal tool into the outside hole of the D-9 cavity (see Figure No. 2). Removal tool will depress the lock tang only while the terminal is in the forward most position in the cavity.

c. While holding the tool securely in place, gently pull on the wire to remove the terminal.

CAUTION: To prevent damage to the connector:

A. Only use the micro-pack removal tool, J-33095 or BT-8234-A.

B. Do not apply excessive pressure to the removal tool.

C. Do not rock or angle the removal tool.
d. Remove the second end of the 151 wire by repeating steps 4a through 4c in cavity D-10.

Remove the 151 wire from the harness by firmly grasping both ends with pliers and gently pulling it out of the harness. Install the replacement wire as follows:

Orient the first terminal on the replacement wire so that the box side of the terminal is toward the center of the connector. Insert the terminal into cavity number D-9. A faint click will be heard as the terminal locks in place. Give the wire a light tug to insure it is seated.

Install the remaining end of the replacement wire into cavity D-10 following the above procedure.

Reinstall the secondary lock into the connector by inserting the teeth of the lock into the connector and pushing firmly until the lock legs snap into place.

Separate the two ECM connector branches. Fold the loop of the replacement wire toward the 32-way ECM connector and secure with plastic electrical tape.

Reconnect the two ECM connectors to the ECM. Reconnect the instrument panel interconnect.

5. Reconnect battery cable.

6. Install Campaign Identification Label.