When should GMC G3500 spark plugs be replaced?

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 should I do if I see leaks under my G3500?

Don't ignore puddles of fluid under your GMC G3500. It could signal a coolant leak, brake fluid leak, or an oil leak. Let any one of these leaks linger and it could cause engine damage.

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

Hard starts and stops put extra wear and tear on engine components. Smooth, gradual starts and stops, on the other hand, are a great way to help your engine run better. They can also help maximize your fuel economy.

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

At the nearest Firestone Complete Auto Care! We’re ready to help service, maintain, and repair your GMC G3500.

How often do GMC G3500 fuel injectors need to be cleaned?

The frequency at which car fuel injectors should be cleaned can vary depending on several factors, including the type of fuel used and the driving conditions. Some manufacturers generally recommend a fuel system cleaning as part of your general car maintenance, or as needed based on symptoms of poor fuel system performance.

Who performs GMC G3500 tune-ups?

When your G3500 needs a tune-up, head to your local Firestone Complete Auto Care. Check out our latest offers to save on your service and schedule an appointment online.

1991 GMC G3500 Tune-Up & Engine Service

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Schedule an Appointment for Your GMC G3500 Tune-Up

Tune in to tune up. Listen to your G3500 and schedule an engine tune-up at the first strange squeak, clunk, or click. Make an appointment today.

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Tune-Ups to Help Your GMC G3500 Run Better

Is it time for an engine tune-up? If you usually wait until your car has an issue to take it in for service, it could be time for a new way of doing things, particularly if you want to keep your 1991 GMC G3500 in tip-top shape. Periodic tune-ups can bring more power back to your G3500’s engine. Tune-ups help your engine start smoothly and run efficiently, so you can enjoy improved fuel economy and lower emissions. When you get routine engine tune-ups based on GMC's recommendations, you’re taking vital steps toward keeping your G3500’s engine running smoother, longer.

GMC G3500 Engine Tune-Up Services

The Firestone Complete Auto Care location in your community offers several GMC G3500 engine tune-up services. The standard Firestone Tune-Up is one service option. The standard Firestone Tune-Up includes new spark plugs (and installation!), a thorough inspection of engine components, and a lifetime parts warranty*. The second service focuses on your G3500's filters, specifically replacing the air filter and fuel 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. This means that a tune-up service that’s a great fit for another car may not be optimal for yours. Chat with a Firestone technician before you jump into a specific service to ensure your engine tune-up money is well-spent.

Where to Get a Tune-Up for Your GMC G3500

Schedule your next 1991 G3500 engine tune-up service at Firestone Complete Auto Care. Not sure when you’re due for a tune-up? Use GMC’s recommended maintenance schedule as a reference point, or schedule an appointment ASAP if you notice any of these signs: stalling or shaky idling when you’re stopped, diminished fuel economy, knocking noises in the engine, or a lit up check engine light on your dashboard.

*Ask a Firestone Complete Auto Care teammate about full terms and conditions for warranties.

Questions About 1991 GMC G3500 Engine Tune-Ups

When should GMC G3500 spark plugs be replaced? 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 should I do if I see leaks under my G3500? Don't ignore puddles of fluid under your GMC G3500. It could signal a coolant leak, brake fluid leak, or an oil leak. Let any one of these leaks linger and it could cause engine damage.
What do hard starts and stops do to my G3500 engine? Hard starts and stops put extra wear and tear on engine components. Smooth, gradual starts and stops, on the other hand, are a great way to help your engine run better. They can also help maximize your fuel economy.
Where can I have a GMC G3500 tune-up done? At the nearest Firestone Complete Auto Care! We’re ready to help service, maintain, and repair your GMC G3500.
How often do GMC G3500 fuel injectors need to be cleaned? The frequency at which car fuel injectors should be cleaned can vary depending on several factors, including the type of fuel used and the driving conditions. Some manufacturers generally recommend a fuel system cleaning as part of your general car maintenance, or as needed based on symptoms of poor fuel system performance.
Who performs GMC G3500 tune-ups? When your G3500 needs a tune-up, head to your local Firestone Complete Auto Care. Check out our latest offers to save on your service and schedule an appointment online.

Proactive Maintenance - 1991 GMC G3500

Take care of your vehicle and it'll take care of you. Click on a service below to learn more about properly maintaining your GMC G3500.

1991 GMC G3500 Repair

Nothing lasts forever. Even your GMC G3500's many parts and pieces. When something breaks, we're ready. Click on a repair below to learn more about 1991 GMC G3500 repairs.