1981-1987 Buick LeSabre Back Up Light Switch Replacement Guide
Fixing reverse lights on your classic LeSabre is often a straightforward repair you can do yourself.
- The back up light switch on the 1981-1987 LeSabre is often integrated with the neutral safety switch.
- Always check bulbs and fuses before deciding to replace the switch.
- The switch is located either on the steering column or on the side of the transmission.
- A quality aftermarket brand like Standard Ignition is a reliable choice, as new OEM parts are generally unavailable.
Diagnosing a Faulty Back Up Light Switch
Before you replace the switch, it's important to make sure it's actually the problem. The symptoms of a bad back up light switch are often identical to other, simpler issues. Start with the easiest things first.
- Check the Bulbs: A burned-out bulb is a very common reason for a reverse light not working. Check both bulbs to be sure.
- Check the Fuse: A blown fuse will cut power to the entire circuit. Consult your owner's manual to find the correct fuse and inspect it.
- Check the Wiring: On older vehicles, wires can become brittle or damaged. A common issue on sedans is a broken wire in the harness that goes to the trunk lid.
If the bulbs, fuse, and visible wiring are all good, the switch itself is the next logical part to suspect. A faulty switch might cause the lights to work sometimes but not others, or not at all. In rare cases, it can fail in a way that leaves the reverse lights on all the time.
Choosing the Right Aftermarket Part
For a vehicle like the 1981-1987 LeSabre, finding new original equipment (OEM) parts from GM is highly unlikely. The aftermarket is your primary source for a new back up light switch. Brands like Standard Ignition specialize in producing replacement parts that meet or exceed the original specifications. Standard Ignition is a well-regarded manufacturer that emphasizes quality control, using components like copper alloy conductors to ensure reliable electrical performance. Given the age of the vehicle, a quality aftermarket part from a reputable brand is a reliable choice for this repair.
Cost of New Aftermarket Back Up Light Switch
| New Aftermarket Part (Standard Ignition) | $26.28 |
Replacing the Back Up Light Switch
The replacement process depends on where the switch is located on your specific LeSabre. It is most commonly found in one of two places:
- On the Steering Column: For many GM cars of this era, the switch is mounted on the steering column, down near the floor. This can often be accessed from inside the car without needing to lift the vehicle.
- On the Transmission: The switch may also be screwed into the side of the transmission, typically on the driver's side for a rear-wheel-drive car. Accessing this location requires safely lifting the vehicle with a jack and supporting it on jack stands.
Pro Tip: A common issue on these cars is slop in the shift linkage. You might find the backup lights only come on when the shifter is between Reverse and Neutral. This can sometimes be fixed by adjusting the switch's position on the steering column.
Safety First
Always disconnect the negative battery terminal before starting any electrical work on your vehicle. If you need to lift the car, use proper jack stands on a level surface and never work under a vehicle supported only by a jack.
Frequently Asked Questions (FAQ)
Can I drive my LeSabre with a broken back up light switch?
While the car will still drive, it is unsafe and likely illegal. Your reverse lights are a key safety feature to warn others you are backing up. You should get the switch repaired as soon as possible to avoid accidents or a traffic ticket.
Why do my reverse lights only work between gears?
This usually points to a misaligned switch or worn shifter linkage. The switch is only being activated as the shifter passes through the correct spot. It may be possible to adjust the switch on the steering column to fix this without replacing the part.
Is the back up light switch the same as the neutral safety switch?
On many 1981-1987 Buick LeSabres, yes. The back up light switch function is often built into the neutral safety switch, which prevents the car from starting in gear. The replacement part will handle both functions.
Do I need any special tools to replace the switch?
Generally, you will only need basic hand tools like a socket set, wrenches, and possibly a screwdriver. If the switch is on the transmission, you will also need a jack and jack stands. No other highly specialized tools are typically required for this job.
Technical Specifications
The switch often serves a dual function as the Neutral Safety Switch. It is typically located on the steering column or the transmission case.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
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