When should GMC C3500 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 does a puddle underneath my GMC C3500 mean?

Don't ignore puddles of fluid under your GMC C3500. 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 C3500 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 GMC C3500 tune-up?

At your closest Firestone Complete Auto Care! Our experienced technicians offer GMC C3500 service, maintenance, and repairs.

How often do GMC C3500 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 can I go to for GMC C3500 tune-ups?

Your local Firestone Complete Auto Care is happy to help with your GMC C3500 tune-up. Visit us online to see our latest offers and book an appointment.

1999 GMC C3500 Tune-Up & Engine Service

Get a Tune-Up

Schedule Your GMC C3500 Tune-Up Service Appointment

Keep your C3500 running newer, longer. Schedule an engine tune-up as soon as you notice your engine running differently. Make your appointment today.

Schedule an Appointment

Tune-Ups to Help Your GMC C3500 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, especially if you want your 1999 GMC C3500’s engine to last for a long time. Regular engine tune-ups can optimize your C3500’s power on the road. 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 can rest assured you’re investing in your C3500’s long-term engine performance.

Engine Tune-Up for GMC C3500

Your nearest Firestone Complete Auto Care location has several options to choose from when it comes to GMC C3500 engine tune-up services. 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*. Another service option pays special attention to the filters in your C3500. Specifically, we replace the fuel filter and air 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 C3500's fuel injectors, throttle body, and throttle plate. This goes a long way in boosting your fuel system’s overall performance. Here’s something to remember when choosing services: the mileage and service history of your C3500 can determine what kind of service it needs. A one-size-fits-all engine tune-up procedure doesn’t necessarily exist. Ask one of our technicians what your vehicle needs, based on your driving habits and your car’s current condition.

Where to Get a Tune-Up for Your GMC C3500

Schedule your next 1999 C3500 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.

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

1999 GMC C3500 Engine Tune-Up Q&A

When should GMC C3500 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 does a puddle underneath my GMC C3500 mean? Don't ignore puddles of fluid under your GMC C3500. 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 C3500 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 GMC C3500 tune-up? At your closest Firestone Complete Auto Care! Our experienced technicians offer GMC C3500 service, maintenance, and repairs.
How often do GMC C3500 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 can I go to for GMC C3500 tune-ups? Your local Firestone Complete Auto Care is happy to help with your GMC C3500 tune-up. Visit us online to see our latest offers and book an appointment.

Maintenance for Your 1999 GMC C3500

We know it’s not just a car, it’s your car. We’ll help you properly maintain your GMC C3500 to keep it on the road and running smoothly. Learn more about maintenance below.

Repair Service for Your 1999 GMC C3500

Your car takes care of you, and we’ll take care of your car. When it’s time for a repair on your GMC C3500, we’re here to help. Check out more info below about 1999 GMC C3500 repairs.