When should GMC G1500 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 G1500?

Don't ignore puddles of fluid under your GMC G1500. 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 G1500 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 get a tune-up for my GMC G1500?

At the nearest Firestone Complete Auto Care! We’re ready to help service, maintain, and repair your GMC G1500.

How often do GMC G1500 fuel injectors need to be cleaned?

The cleaning schedule for vehicle fuel injectors varies depending on your driving conditions and the type of fuel you use. Some manufacturers suggest cleaning your fuel system as part of routine maintenance, while others will recommend it on an as-needed basis if you’re experiencing poor performance. Reference your GMC owner’s manual for exact guidelines.

Who does GMC G1500 tune-ups?

Visit your local Firestone Complete Auto Care for your GMC G1500 tune-up. Make an appointment online and view our latest offers to save big.

1991 GMC G1500 Engine Tune-Ups & Maintenance

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Schedule an Appointment for Your GMC G1500 Tune-Up

If your G1500 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 Into Your GMC G1500

Is it time for an engine tune-up? 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 drive a 1991 GMC G1500. Regular engine tune-ups can optimize your G1500’s power on the road. Tune-ups help your engine start smoothly and run efficiently, which can mean better fuel economy (a win for you) and lower emissions (a win for the environment). When you take your car for regular engine tune-ups as recommended by GMC, you can rest assured you’re investing in your G1500’s long-term engine performance.

Routine Engine Tune-Up Service for Your GMC G1500

Your local Firestone Complete Auto Care offers a range of engine tune-up services for your 1991 GMC G1500. One option 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*. The second service focuses on your G1500'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 G1500's fuel injectors, throttle body, and throttle plate. The result? Restored fuel system performance. Keep in mind that your G1500'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 G1500 Tune-Up?

Schedule your next 1991 G1500 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: shaking while the engine is idling, poor 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 G1500 Engine Tune-Ups

When should GMC G1500 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 G1500? Don't ignore puddles of fluid under your GMC G1500. 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 G1500 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 get a tune-up for my GMC G1500? At the nearest Firestone Complete Auto Care! We’re ready to help service, maintain, and repair your GMC G1500.
How often do GMC G1500 fuel injectors need to be cleaned? The cleaning schedule for vehicle fuel injectors varies depending on your driving conditions and the type of fuel you use. Some manufacturers suggest cleaning your fuel system as part of routine maintenance, while others will recommend it on an as-needed basis if you’re experiencing poor performance. Reference your GMC owner’s manual for exact guidelines.
Who does GMC G1500 tune-ups? Visit your local Firestone Complete Auto Care for your GMC G1500 tune-up. Make an appointment online and view our latest offers to save big.

Proactive Maintenance - 1991 GMC G1500

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 G1500.

Repairs on Your 1991 GMC G1500

Your GMC G1500 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 G1500 repairs below.