When should GMC R3500 spark plugs be replaced?

Replace spark plugs on time or about every 30,000 miles or so. Without the spark of electricity created by spark plugs, your engine doesn’t have the combustion it needs to start — which could leave you stranded on the road. Always replace your spark plugs on time based on GMC’s recommendations.

What should I do if I see leaks under my R3500?

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.

Are some driving habits better for my GMC R3500 engine than others?

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 tune-up for my GMC R3500?

At your local Firestone Complete Auto Care! Our technicians know how to service, maintain, and repair GMC R3500s.

How frequently do I need to get my GMC R3500 fuel injectors cleaned?

Factors like fuel type and driving conditions can affect how frequently you need to clean your R3500 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 does GMC R3500 tune-ups?

When your R3500 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 R3500 Engine Tune-Ups & Maintenance

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Schedule Your GMC R3500 Tune-Up Service Appointment

If your R3500 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.

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Tune-Ups to Help Your GMC R3500 Run Better

Is it time for an engine tune-up? If you're the type of driver who waits for something to go wrong with your vehicle, now is the time to work on that habit, especially if you want your 1991 GMC R3500’s engine to last for a long time. Routine engine tune-ups can bring power back to your R3500. 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’re taking vital steps toward keeping your R3500’s engine running smoother, longer.

Routine Engine Tune-Up Service for Your GMC R3500

Your local Firestone Complete Auto Care offers a range of engine tune-up services for your 1991 GMC R3500. The standard Firestone Tune-Up is one service option. It includes a complete visual inspection of engine components, installation of new spark plugs, and a lifetime warranty on parts*. The second service focuses on your R3500's filters, specifically replacing the air filter and fuel filter. The third tune-up option is a fuel system cleaning service, which is a three-step process that removes varnish, dirt, and carbon deposits on your R3500's fuel injectors, throttle body, and throttle plate. This can improve your fuel system’s performance (and therefore, your engine’s performance). Keep in mind that your R3500's mileage and maintenance history can uniquely impact its tune-up needs. If you’re not sure what services are the best fit for your car, let us help! Chat with a Firestone technician before you jump into a specific service to ensure your engine tune-up money is well-spent.

Where Should I Go for My GMC R3500 Tune-Up?

If you’re looking for 1991 R3500 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: shaking while the engine is idling, poor fuel economy, an illuminated check engine light on your dashboard, or a knocking sound when the engine is running.

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

Common Engine Tune-Up Q&A For 1991 GMC R3500s

When should GMC R3500 spark plugs be replaced? Replace spark plugs on time or about every 30,000 miles or so. Without the spark of electricity created by spark plugs, your engine doesn’t have the combustion it needs to start — which could leave you stranded on the road. Always replace your spark plugs on time based on GMC’s recommendations.
What should I do if I see leaks under my R3500? 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.
Are some driving habits better for my GMC R3500 engine than others? 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 tune-up for my GMC R3500? At your local Firestone Complete Auto Care! Our technicians know how to service, maintain, and repair GMC R3500s.
How frequently do I need to get my GMC R3500 fuel injectors cleaned? Factors like fuel type and driving conditions can affect how frequently you need to clean your R3500 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 does GMC R3500 tune-ups? When your R3500 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 R3500 Maintenance

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 R3500.

Repairs on Your 1991 GMC R3500

Your GMC R3500 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 1991 GMC R3500 repairs below.