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Brake Light Switch Guide for the Pontiac Tempest: Correcting the Model Years

Information for owners who believe they have a 1977-1981 Pontiac Tempest.

3 minutes to read 1977-1981 Pontiac Tempest
Difficulty
1/5
Est. Time
0.5 hrs
DIY Doable?
✅ Yes
Shop Labor
$50-$100
🚫 Do not drive — It is not safe to drive without functional brake lights.
Key Takeaways
  • The Pontiac Tempest was not produced from 1977-1981; you likely have a Pontiac LeMans.
  • Verify your vehicle's actual model and options (like cruise control) before ordering a part.
  • Brake light switches for the related 1977-1981 Pontiac LeMans are inexpensive and widely available from aftermarket brands.
  • Replacement is simple for DIYers, but access under the dash can be tight.
The brake light switch is a simple but crucial part. It is a small sensor located at the top of the brake pedal arm. When you press the brake pedal, it pushes a plunger on the switch. This completes an electrical circuit, sending power to your brake lights so they turn on. It also sends a signal to other vehicle systems, like the cruise control, to tell them the brakes are being applied. Without a working switch, your brake lights will not light up, creating a serious safety hazard.

Vehicle Model Year Inaccuracy

The Pontiac Tempest was not manufactured for the North American market between 1977 and 1981. The original production run for the Tempest ended after the 1970 model year. It was later revived from 1987 to 1991 as a rebadged Chevrolet Corsica sold only in Canada. If you believe you own a 1977-1981 Tempest, it is highly recommended that you check your vehicle's VIN and registration documents. It is likely you have a different Pontiac model from that era, such as the Pontiac LeMans or Grand LeMans, which were built on a similar platform.

Finding the Correct Brake Light Switch for a Related Model

Since no parts exist for a '77-'81 Tempest, this guide will reference the contemporary Pontiac LeMans. Brake light switches for the 1977-1981 Pontiac LeMans are readily available. These are typically simple, plunger-style switches mounted on a bracket near the brake pedal assembly. They were used across many General Motors vehicles from this period, making them easy to find.

When shopping for a replacement, you will often see two main types:

  • For vehicles without cruise control: This is the most common type and is a simple two-terminal switch.
  • For vehicles with cruise control: This switch may have additional terminals or a different design to also send a signal to disengage the cruise control system when the brakes are applied.

It is essential to select the correct switch for your car's options. Using the wrong one can result in non-functional brake lights or cruise control issues.

Aftermarket Brand Quality for GM A-Body Cars (1970s)

For a vehicle like the Pontiac LeMans from this era, the distinction between OEM and quality aftermarket parts is minimal for a simple component like a brake light switch. The original Delco parts are long out of production. Aftermarket brands produce reliable replacements that meet or exceed the original specifications.

  • Standard Motor Products (SMP): A well-regarded brand that often manufactures parts for other labels. Their switches are known for reliability.
  • Duralast: A popular parts store brand that offers dependable switches, often with a good warranty.
  • ACDelco (Professional/Gold): While not the original GM part, ACDelco's aftermarket lines offer quality replacements that are a trusted choice for GM vehicles.

Given the low cost and simple design of this part, any of the reputable aftermarket brands will provide a durable and effective replacement for a 1970s-era Pontiac.

Known Issues, Recalls, and Service Bulletins

There are no recalls or Technical Service Bulletins (TSBs) on file with the National Highway Traffic Safety Administration (NHTSA) for a 1977-1981 Pontiac Tempest, as the vehicle does not exist. Likewise, searches for the related Pontiac LeMans from the same period do not show any recalls specifically for the brake light switch.

Estimated Costs for a 1977-1981 Pontiac LeMans Brake Light Switch
Part Type Estimated Cost
New Aftermarket $10 - $25
Shop Labor $50 - $100

Frequently Asked Questions (FAQ)

Why can't I find parts for my 1978 Pontiac Tempest?

You cannot find parts because the Pontiac Tempest was not made in 1978. The last year for the classic Tempest was 1970. Please verify your vehicle's model; you may have a Pontiac LeMans or another model from that year.

What is the difference between a Tempest and a LeMans?

In the 1960s, the LeMans started as a top trim level for the Tempest. After 1970, the Tempest name was retired in the U.S., and LeMans became the name for Pontiac's intermediate-sized car line.

Is a brake light switch hard to replace on a 1970s Pontiac?

No, it is generally an easy repair. The switch is located above the brake pedal and is usually held in place by a clip or a small bolt. It involves unplugging the electrical connector, removing the old switch, and installing the new one. However, the location can be awkward to reach under the dashboard.

Are there any recalls for this part?

No, there are no recalls for a brake light switch on a 1977-1981 Pontiac Tempest or the related LeMans.

Technical Specifications

Typically a 2-terminal or 4-terminal plunger-style switch, depending on cruise control option.

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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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