What happens if my GMC S15 spark plugs fail?

When it’s time to replace the spark plugs, don’t delay. These small (but vital!) parts provide the electric spark that your car needs in order to start, and old spark plugs can prevent your car from starting at all. Replace spark plugs on time or about every 30,000 miles or so.

What does a puddle underneath my GMC S15 mean?

Puddles could indicate that your vehicle is leaking coolant, oil, or brake fluid. Ignoring these leaks can lead to permanent engine damage, so address these symptoms ASAP with a tune-up service.

What do hard starts and stops do to my S15 engine?

Hard stops and starts can lead to premature wear on your engine’s components. Lighten up that lead foot and opt for steady, fluid starts and stops instead. Your engine (and your passengers!) will thank you.

Where can I get a GMC S15 tune-up?

At the nearest Firestone Complete Auto Care! We’re ready to help service, maintain, and repair your GMC S15.

How often do GMC S15 fuel injectors need to be cleaned?

Factors like fuel type and driving conditions can affect how frequently you need to clean your S15 fuel injectors. Some manufacturers recommend a fuel system cleaning as part of routine maintenance, or as needed if your vehicle is showing signs of poor fuel system performance.

Who offers GMC S15 tune-ups?

Your local Firestone Complete Auto Care is happy to help with your GMC S15 tune-up. Visit us online to see our latest offers and book an appointment.

1985 GMC S15 Tune-Up & Engine Service

Get a Tune-Up

Schedule an Appointment for Your GMC S15 Tune-Up

Tune in to tune up. Listen to your S15 and schedule an engine tune-up at the first strange squeak, clunk, or click. Make an appointment today.

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Tune Into Your GMC S15

Is it tune-up time? If you usually wait until your car has an issue to take it in for service, now is the time to work on that habit, especially if you want your 1985 GMC S15’s engine to last for a long time. Periodic tune-ups can bring more power back to your S15’s engine. Tune-ups help your engine start smoothly and run efficiently, which can lead to lower emission levels and better fuel economy. When you get routine engine tune-ups based on GMC's recommendations, you can rest assured you’re investing in your S15’s long-term engine performance.

Routine Engine Tune-Up Service for Your GMC S15

Your local Firestone Complete Auto Care offers a range of engine tune-up services for your 1985 GMC S15. One option is the standard Firestone Tune-Up. This includes the installation of new spark plugs and a visual inspection of your engine’s components, plus a lifetime warranty on parts*. A second service option replaces the air and fuel filter in your S15. Yet another service is a fuel system cleaning process, which involves removing varnish, dirt, and carbon deposits that have built up inside the fuel injectors, throttle body, and throttle plate in your S15. The result? Restored fuel system performance. Consider this when choosing a tune-up service for your S15: your vehicle’s maintenance record and mileage can determine which service is best. A one-size-fits-all engine tune-up procedure doesn’t necessarily exist. Talk to a technician about your driving style, mileage, and service history to learn more about your vehicle's specific needs.

Where Should I Go for My GMC S15 Tune-Up?

If you’re looking for 1985 S15 engine tune-up services, head to Firestone Complete Auto Care. Consult your vehicle’s recommended service schedule from GMC, or make a service appointment if you notice any of these symptoms from your engine: stalling or shaky idling when you’re stopped, diminished fuel economy, engine knocking, or an illuminated check engine light.

*Check with a teammate at Firestone Complete Auto Care for complete terms and conditions regarding warranties.

1985 GMC S15 Engine Tune-Up Q&A

What happens if my GMC S15 spark plugs fail? When it’s time to replace the spark plugs, don’t delay. These small (but vital!) parts provide the electric spark that your car needs in order to start, and old spark plugs can prevent your car from starting at all. Replace spark plugs on time or about every 30,000 miles or so.
What does a puddle underneath my GMC S15 mean? Puddles could indicate that your vehicle is leaking coolant, oil, or brake fluid. Ignoring these leaks can lead to permanent engine damage, so address these symptoms ASAP with a tune-up service.
What do hard starts and stops do to my S15 engine? Hard stops and starts can lead to premature wear on your engine’s components. Lighten up that lead foot and opt for steady, fluid starts and stops instead. Your engine (and your passengers!) will thank you.
Where can I get a GMC S15 tune-up? At the nearest Firestone Complete Auto Care! We’re ready to help service, maintain, and repair your GMC S15.
How often do GMC S15 fuel injectors need to be cleaned? Factors like fuel type and driving conditions can affect how frequently you need to clean your S15 fuel injectors. Some manufacturers recommend a fuel system cleaning as part of routine maintenance, or as needed if your vehicle is showing signs of poor fuel system performance.
Who offers GMC S15 tune-ups? Your local Firestone Complete Auto Care is happy to help with your GMC S15 tune-up. Visit us online to see our latest offers and book an appointment.

1985 GMC S15 Maintenance

We know it’s not just a car, it’s your car. We’ll help you properly maintain your GMC S15 to keep it on the road and running smoothly. Learn more about maintenance below.

1985 GMC S15 Repair

Your GMC S15 runs best when it’s well cared for. Make sure it’s always in tip-top shape with repairs from Firestone Complete Auto Care. Learn more about 1985 GMC S15 repairs below.