SERVICE MANUAL UPDATE SEC. 8A-REMOTE KEYLESS ENTRY

MODELS/YEARS 1990 EIGHTY-EIGHT AND NINETY-EIGHT MODELS

This bulletins supplements Dealer Technical Bulletin 90-T-79 by providing pages 8A-132-1, 8A-132-1A and 8A-132-9 that should have been included in the initial bulletin.

PROGRAMMING PROCEDURE

Do the following when replacing Keyless Entry Module or either Transmitter.

1. Turn Ignition Switch to OFF.

2. Jumper Program Connector terminal A to terminal B. Door locks will lock and unlock in approximately 2 seconds.

3. Press Unlock Button on one Transmitter. Door locks will lock and unlock in approximately 2 seconds. The first Transmitter i now programmed.

4. Repeat step 3 using other Transmitter. If only one Transmitter is being used, go to step 5.

5. Disconnect jumper from Program Connector.

CIRCUIT OPERATION

The Remote Keyless Entry System includes a hand held radio Transmitter and Keyless Entry Module. The Transmitter sends digitally encoded radio signals to the Module when a button is pushed. Transmitter range is 7 meters (23 feet). The following circuits can be controlled.

1. Illuminated entry lights (if equipped) 2. Door locks (all doors or just driver's) 3. Luggage Compartment Lid Release

Illuminated Entry

The Keyless Entry Module momentarily grounds the Interior Lights for approximately 40 seconds when a door unlock signal is received by the Keyless Engry Module.

Door Locks

Pushing the Unlock Button twice results in the Keyless Entry Module activating its output at terminal C1/D. This energizes the Unlock Relay in the Door Lock Relay Assembly and unlocks the RH front and/or rear doors (if equipped with 4 door).

The LH Front Door Lock Motor is driven directly by the Keyless Entry Module.

Pressing the Transmitter Lock Button results in the Keyless Entry Module activating its output at connector C1 terminal E. This energizes the Lock Relay in the Door Lock Relay Assembly and locks the doors. The LH front door is grounded through the Keyless Entry Module when locking.

Luggage Compartment Lid Release

The Luggage Compartment Lid Release is operated by applying battery voltage to the Luggage Compartment Lid Release Solenoid.

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.