What happens if my GMC Sierra 3500 HD spark plugs fail?

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 does a puddle underneath my GMC Sierra 3500 HD mean?

Don't ignore puddles of fluid under your GMC Sierra 3500 HD. 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 Sierra 3500 HD engine?

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.

I need a GMC Sierra 3500 HD tune-up. Where can I get on?

At your local Firestone Complete Auto Care! Our technicians know how to service, maintain, and repair GMC Sierra 3500 HDs.

How frequently do the fuel injectors in my GMC Sierra 3500 HD need to be cleaned?

Factors like fuel type and driving conditions can affect how frequently you need to clean your Sierra 3500 HD 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 offers GMC Sierra 3500 HD tune-ups?

When your Sierra 3500 HD 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.

2012 GMC Sierra 3500 HD Engine Tune-Ups & Maintenance

Get a Tune-Up

Schedule Your GMC Sierra 3500 HD Tune-Up Service Appointment

If your Sierra 3500 HD 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 Sierra 3500 HD Run Better

Is your engine overdue for a 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 drive a 2012 GMC Sierra 3500 HD. Routine engine tune-ups can bring power back to your Sierra 3500 HD. 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 invest in your Sierra 3500 HD's long-term health and engine performance.

GMC Sierra 3500 HD Engine Tune-Up Services

The Firestone Complete Auto Care location in your community offers several GMC Sierra 3500 HD engine tune-up services. 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 Sierra 3500 HD's filters, specifically replacing the air filter and fuel filter. Our third service is a thorough cleaning of the fuel system. During this type of tune-up, we use a three-step process to get rid of harmful varnish, dirt, and carbon deposit buildup in your Sierra 3500 HD’s fuel injectors, throttle body, and throttle plate. This goes a long way in boosting your fuel system’s overall performance. Keep in mind that your Sierra 3500 HD'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! Talk to a technician about your driving style, mileage, and service history to learn more about your vehicle's specific needs.

Where Should I Go for My GMC Sierra 3500 HD Tune-Up?

Come to Firestone Complete Auto Care for your next 2012 Sierra 3500 HD engine tune-up. 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: decreased gas mileage, "rough" idling or stalling when stopped, 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.

2012 GMC Sierra 3500 HD Engine Tune-Up Q&A

What happens if my GMC Sierra 3500 HD spark plugs fail? 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 does a puddle underneath my GMC Sierra 3500 HD mean? Don't ignore puddles of fluid under your GMC Sierra 3500 HD. 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 Sierra 3500 HD engine? 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.
I need a GMC Sierra 3500 HD tune-up. Where can I get on? At your local Firestone Complete Auto Care! Our technicians know how to service, maintain, and repair GMC Sierra 3500 HDs.
How frequently do the fuel injectors in my GMC Sierra 3500 HD need to be cleaned? Factors like fuel type and driving conditions can affect how frequently you need to clean your Sierra 3500 HD 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 offers GMC Sierra 3500 HD tune-ups? When your Sierra 3500 HD 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.

Maintenance for Your 2012 GMC Sierra 3500 HD

We know it’s not just a car, it’s your car. We’ll help you properly maintain your GMC Sierra 3500 HD to keep it on the road and running smoothly. Learn more about maintenance below.

2012 GMC Sierra 3500 HD Repair

Your car takes care of you, and we’ll take care of your car. When it’s time for a repair on your GMC Sierra 3500 HD, we’re here to help. Check out more info below about 2012 GMC Sierra 3500 HD repairs.