When should GMC G3500 spark plugs be replaced?

Replace spark plugs on time or about every 30,000 miles or so. Spark plugs are small but mighty. The spark of electricity that the plug emits across a small gap creates the ignition for the combustion needed to start your car. Without that spark, your car won't start.

What do I do if I see a pool of liquid under my GMC G3500?

Puddles could indicate an oil leak, coolant leak, or brake fluid leak– all of which can critically hurt your engine. Have your engine inspected as soon as you spot a pool of liquid in your usual parking spot.

What do hard starts and stops do to my G3500 engine?

You can make your driving habits more engine-friendly. Hard starts and stops can increase the stress on engine parts, especially over many years. Boost your fuel economy and care for your engine by using gradual, smooth starts and stops instead.

Where can I have a GMC G3500 tune-up done?

At your local Firestone Complete Auto Care! Our technicians know how to service, maintain, and repair GMC G3500s.

How frequently do I need to get my GMC G3500 fuel injectors cleaned?

There is no hard and fast rule on how often fuel injectors should be cleaned, and it can vary based on driving habits and fuel type. Some manufacturers may suggest including a fuel system cleaning in your regular maintenance schedule. Or you may need to clean your fuel injectors as needed if you notice signs of a fuel system problem.

Who does GMC G3500 tune-ups?

Visit your nearby Firestone Complete Auto Care for GMC G3500 tune-ups and more. Schedule your appointment online and save big by checking out our latest offers.

1985 GMC G3500 Tune-Up & Engine Service

Get a Tune-Up

Schedule an Appointment for Your GMC G3500 Tune-Up

If your G3500 is acting strange or making new noises, it could be engine tune-up time. Don’t wait until small problems get bigger. Make an appointment now.

Schedule an Appointment

Tune-Ups to Help Your GMC G3500 Run Better

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, particularly if you want to keep your 1985 GMC G3500 in tip-top shape. Periodic tune-ups can bring more power back to your G3500’s engine. They're designed to help your engine start easier and run more efficiently, so you can enjoy improved fuel economy and lower emissions. When you take your car for regular engine tune-ups as recommended by GMC, you’re taking vital steps toward keeping your G3500’s engine running smoother, longer.

Routine Engine Tune-Up Service for Your GMC G3500

Your local Firestone Complete Auto Care offers a range of engine tune-up services for your 1985 GMC G3500. The first is the standard Firestone Tune-Up. It includes a complete visual inspection of engine components, installation of new spark plugs, and a lifetime warranty on parts*. Another service option pays special attention to the filters in your G3500. Specifically, we replace the fuel filter and air filter. 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 G3500. This goes a long way in boosting your fuel system’s overall performance. Consider this when choosing a tune-up service for your G3500: your vehicle’s maintenance record and mileage can determine which service is best. If you’re not sure what services are the best fit for your car, let us help! Ask one of our technicians what your vehicle needs, based on your driving habits and your car’s current condition.

Where Should I Go for My GMC G3500 Tune-Up?

Schedule your next 1985 G3500 engine tune-up service at 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, an illuminated check engine light on your dashboard, or a knocking sound when the engine is running.

*Talk to a Firestone Complete Auto Care teammate for full terms and conditions on warranties.

1985 GMC G3500 Engine Tune-Up Q&A

When should GMC G3500 spark plugs be replaced? Replace spark plugs on time or about every 30,000 miles or so. Spark plugs are small but mighty. The spark of electricity that the plug emits across a small gap creates the ignition for the combustion needed to start your car. Without that spark, your car won't start.
What do I do if I see a pool of liquid under my GMC G3500? Puddles could indicate an oil leak, coolant leak, or brake fluid leak– all of which can critically hurt your engine. Have your engine inspected as soon as you spot a pool of liquid in your usual parking spot.
What do hard starts and stops do to my G3500 engine? You can make your driving habits more engine-friendly. Hard starts and stops can increase the stress on engine parts, especially over many years. Boost your fuel economy and care for your engine by using gradual, smooth starts and stops instead.
Where can I have a GMC G3500 tune-up done? At your local Firestone Complete Auto Care! Our technicians know how to service, maintain, and repair GMC G3500s.
How frequently do I need to get my GMC G3500 fuel injectors cleaned? There is no hard and fast rule on how often fuel injectors should be cleaned, and it can vary based on driving habits and fuel type. Some manufacturers may suggest including a fuel system cleaning in your regular maintenance schedule. Or you may need to clean your fuel injectors as needed if you notice signs of a fuel system problem.
Who does GMC G3500 tune-ups? Visit your nearby Firestone Complete Auto Care for GMC G3500 tune-ups and more. Schedule your appointment online and save big by checking out our latest offers.

Maintenance for Your 1985 GMC G3500

Stay ahead of any potential issues with your GMC G3500 so your car can keep pace with life! Learn more about proper maintenance for your vehicle below.

Repair Service for Your 1985 GMC G3500

Your car takes care of you, and we’ll take care of your car. When it’s time for a repair on your GMC G3500, we’re here to help. Check out more info below about 1985 GMC G3500 repairs.