Chevrolet Astro Back Up Light Switch Guide for 1985-1990 Models
Everything you need to know about diagnosing and replacing the reverse light switch on your first-generation Astro van.
- The back up light switch is often combined with the Neutral Safety Switch on automatic models, located on the steering column.
- Before replacing the switch, always check the bulbs and the 'TURN B/U' fuse first.
- For automatic models, the switch can often be adjusted by slightly rotating it on the steering column to fix intermittent operation.
- Aftermarket brands like ACDelco and Standard Ignition offer reliable, quality replacements for this part.
Diagnosing a Faulty Back Up Light Switch
When your reverse lights stop working, the back up light switch is a common suspect. Before replacing it, it's wise to rule out other simple issues. First, check the bulbs to make sure they haven't burned out. Then, inspect the "TURN B/U" fuse in the fuse panel. If the bulbs and fuse are good, the problem often points to the switch, its adjustment, or the wiring.
Common Failure Symptoms
- Reverse lights don't turn on: This is the most obvious sign. When you shift into reverse, the lights fail to illuminate.
- Intermittent operation: The lights may flicker or only work when you wiggle the gear shifter. This often indicates a worn or misadjusted switch.
- Lights are stuck on: In rare cases, the switch can fail in the "on" position, leaving your reverse lights illuminated even when not in reverse.
Safety First
Driving without functional reverse lights is a safety hazard and may be illegal in your area. It prevents others from knowing your intention to back up, increasing the risk of an accident, especially in parking lots or at night.
Choosing the Right Aftermarket Switch
For a vehicle from this era, aftermarket parts are often the only practical option. OEM parts may be discontinued or very expensive. Luckily, the available aftermarket brands offer reliable solutions.
- ACDelco: Often considered the original equipment supplier for GM, ACDelco is a trusted name. For an older vehicle, their parts are typically high-quality aftermarket replacements that meet original specifications. They represent a good balance of quality and price.
- Standard Ignition (SMP): Standard is a well-respected aftermarket manufacturer with a long history of producing quality electrical components. Many professional mechanics trust and use their parts. They are a solid choice and often a direct equivalent to ACDelco in terms of performance.
- Replacement: This is a budget-friendly brand. While it can save you money, the quality and longevity might not match premium brands like ACDelco or Standard. For a simple switch like this, it can be a viable option if cost is your primary concern.
Pro Tip: For automatic transmission models, the back up light switch is part of the Neutral Safety Switch on the steering column. Sometimes, the issue is just an adjustment. The switch can be rotated slightly to ensure it makes contact at the right time when you shift into reverse. You may hear a clicking or ratcheting sound as you adjust it.
🎬 See how to adjust the column-mounted reverse light switch.Cost Overview for 1985-1990 Chevrolet Astro
| Part Category | Estimated Cost |
|---|---|
| New Aftermarket Switch | $26.16 - $40.77 |
| Shop Labor for Installation | $90 - $150 |
Frequently Asked Questions
Where is the back up light switch located on my 1985-1990 Astro?
For automatic transmission models, the switch is part of the neutral safety switch assembly. It's a crescent-shaped plastic part located at the base of the steering column, inside the cab, near the firewall. For manual transmission models, the switch is typically screwed into the side of the transmission housing.
Can I replace the back up light switch myself?
Yes, this is a feasible DIY job for most home mechanics. For switches on the steering column, access can be tight under the dashboard, but it only requires basic hand tools. For transmission-mounted switches, you will need to safely raise and secure the vehicle to work underneath it. The difficulty is low, and it can usually be done in under an hour.
🎬 Watch a step-by-step guide to replacing the switch.Do I need to check anything else before replacing the switch?
Absolutely. Always check the bulbs and the fuse first. You can also use a multimeter to test for power at the switch connector. With the key on and the van in reverse, you should have power on the light green wire going to 🎬 Learn how to diagnose complex wiring and splice issues. the rear of the vehicle. This confirms if the switch is the problem.
Are there any recalls for the back up light switch on my Astro?
No, searches of the NHTSA database did not find any recalls specifically for the back up light switch on 1985-1990 Chevrolet Astro vans. Any recalls found for Astro vans were for different model years or different components.
Helpful Videos
Technical Specifications
OEM Part Numbers: 14069600
Location varies by transmission type. For automatic transmissions, it is part of the Neutral Safety Switch on the steering column. For manual transmissions, it is located on the transmission case.
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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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