A Guide to the 1985-1993 GMC Jimmy Headlight Switch
Everything you need to know before replacing the headlight switch on your S-15 Jimmy.
- Failure of the dash lights is a primary symptom pointing directly to a bad headlight switch.
- Replacement is a straightforward DIY job requiring only basic hand tools and about an hour of time.
- There are no recalls for this part; it is a common wear-and-tear item on these trucks.
- A premium aftermarket brand like Standard Ignition or Rostra offers a reliable, long-term repair without the higher cost of an OEM part.
Is Your Headlight Switch Failing?
The headlight switch on the '85-'93 GMC Jimmy is a common part to wear out. Because all power for the lights runs through it, the internal parts can get hot and fail over time. The component that controls the dash lights is also a frequent point of failure. Knowing the signs of a bad switch can save you from a dangerous situation where your lights go out unexpectedly.
Common Symptoms of a Bad Switch:
- No Headlights or Intermittent Failure: Your headlights might not turn on at all, or they may flicker and turn off while you're driving. Sometimes they will work, and other times they won't.
- Dash Lights Don't Work: A very common problem is when the lights for your speedometer and gauges go out completely. You might also find that you can no longer adjust their brightness.
- Burning Smell: A burnt plastic or electrical smell from the dashboard area is a serious warning sign that the switch is overheating and shorting out.
- Only Some Lights Work: You may have parking lights but no headlights, or you might not be able to switch between your low and high beams.
- Delayed Lights: You pull the switch, but the headlights take several seconds to actually turn on.
Choosing the Right Aftermarket Headlight Switch
When shopping for a new headlight switch, you'll find several aftermarket brands available. For a vehicle like the GMC Jimmy, a quality aftermarket part is often a smart and affordable choice. The original switches can fail, so a new part from a good brand can be a reliable, long-term fix.
Brand Quality Tiers
Not all aftermarket parts are created equal. Here’s a general breakdown of the brands available:
- Premium Aftermarket (Standard Ignition, Rostra): Brands like Standard Motor Products (SMP) and Rostra have a strong reputation for producing quality electronic parts that meet or exceed original specifications. They often use better materials, like copper conductors, for reliability. User reviews for Standard switches are generally positive, with many reporting they last for years. These are a solid choice for a dependable repair.
- Economy (Replacement): "Replacement" branded parts are typically the most affordable option. While they will get the job done, the quality can be inconsistent. They may not last as long or fit as perfectly as a premium aftermarket or OEM part. They are a good choice if budget is your primary concern.
Headlight Switch Cost for 1985-1993 GMC Jimmy
| New Aftermarket | $28.47 - $58.42 |
| Shop Labor | $60 - $120 |
Pro Tip: The plastic on your dashboard can become very brittle after 30+ years. Be gentle when removing the dash trim panel to avoid cracking it during the replacement.
Frequently Asked Questions
Is it hard to replace a GMC Jimmy headlight switch?
No, this is a job most DIYers can handle. The most difficult part is simply getting to the switch behind the dashboard. Basic tools like a Phillips screwdriver are all that's needed. The process involves removing the dash trim, pressing a release button on the switch to pull the knob out, unscrewing a retaining nut, and unplugging it.
Are there any recalls on this headlight switch?
No. Searches of the National Highway Traffic Safety Administration (NHTSA) database show no recalls or technical service bulletins (TSBs) for the headlight switch on the 1985-1993 GMC Jimmy.
Why did my dash lights stop working but my headlights are fine?
This is a classic symptom of a failed headlight switch on these GM trucks. The part of the switch that controls and dims the dash lights (the rheostat) often burns out before the part that controls the headlights. Replacing the entire switch assembly is the correct fix.
Should I buy an OEM or Aftermarket switch?
For this part, a quality aftermarket switch from a brand like Standard Ignition or Rostra is a great choice. It offers a good balance of quality and value. Since even the original parts can fail in the same way, a new, well-made aftermarket part is a very common and reliable repair.
Technical Specifications
OEM Part Numbers: 1995173 1995165 1995164 1995163 1995151 1995150 1995149 1995147 1995142 1995123 1995122
Plunger-style (pull knob) dash-mounted switch with integrated instrument panel light rheostat.
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.
- GMC Jimmy: