ACTIVATING HORN OPENS HEADLAMP REPL. HEADLAMP CONTROL MODULE. Saturn Saturn 1991

For 1990-2009 cars

# ACTIVATING HORN OPENS HEADLAMP REPL. HEADLAMP CONTROL MODULE

#### SUBJECT: Headlamps Open When Horn is Activated (Replace Existing Headlamp Control Module with New Part)

Due to the addition of "MODELS AFFECTED" with a VIN breakpoint, this bulletin supercedes bulletin 91 - T - 16, which should be discarded.

#### MODELS AFFECTED: 1991 Saturn SC Coupes built before vehicle identification number (VIN) MZ118950.

CONDITION: Some customers may comment that the headlamp doors open when the headlamp switch is in the "P" (park) position or "OPEN" position (after being moved from the "OFF" position) and the horn is activated.

CAUSE: Electromagnetic compatability (EMC) condition in headlamp control module assembly, Part Number 21020316, causes it to open headlamps, depending on position of headlamp switch, when horn is activated.

CORRECTION: Replace existing headlamp control module assembly with new headlamp control module assembly, Part Number 21021358, according to the following procedures:

#### PROCEDURE:

--------- 1. Disconnect battery negative cable.

2. Remove bolts from air cleaner assembly and remove air cleaner assembly from vehicle.

3. Disconnect electrical connectors from headlamp control module.

4. Remove bolts from headlamp control module and remove from vehicle.

5. Position new headlamp control module to vehicle and secure with bolts.

6. Connect electrical connectors to headlamp control module.

7. Install air cleaner assembly.

8. Connect negative battery cable.

PARTS REQUIREMENTS: 21021358 1 - Headlamp Control Module Assembly

CLAIM INFORMATION: To receive credit for this repair, submit a claim through the Saturn Dealer System as follows:

Labor Case Operation Type Description Code Time ------------------------------------------------------ VW Install Headlamp Control Module N4829 0.3 hrs

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.