What Is The GMC Sierra HD Service Schedule?

2025 GMC Sierra HD

 

At Legacy Chevrolet of Waxahachie, we give a clear, helpful guide to keeping your GMC Sierra HD running at peak performance in Midlothian. Keep reading to learn more!

GMC Sierra 2500 & 3500 Maintenance Schedule 

When it comes to the GMC Sierra 2500 and 3500 maintenance schedules, here’s a solid breakdown based on manufacturer and dealer recommendations:

Sierra 2500

Every 7,500 Miles

  • Change the oil and filter.
  • Check the belts and hoses.
  • Check the fluid levels and look for leaks.
  • Inspect the brakes.
  • Inspect the tire condition.
  • Inspect the wiper blades and replace them if necessary.
  • Rotate the tires.
  • Test the battery.

Every 15,000 Miles

All services in the 7,500-mile GMC Sierra service interval, plus:

 

  • Replace the windshield wiper blades.

Every 22,500 Miles

All the above services, as well as:

 

  • Change the transfer case fluid.
  • Change the transmission fluid (Allison transmissions only).
  • Replace the cabin air filter.
  • Replace the fuel filter.

Every 45,000 Miles

All 22,500-mile services, in addition to:

 

  • Assess the brake pads.
  • Change the brake fluid.
  • Check the tires.
  • Inspect the evaporative control system.
  • Replace the engine air filter.

Every 97,500 Miles

All services in the 7,500-mile GMC Sierra maintenance schedule, plus:

 

  • Replace the spark plugs and spark plug wires.

At 150,000 Miles 

All the above services, as well as:

 

  • Flush and replace the engine coolant.

Sierra 3500

Every 7,500 Miles

  • Change the oil and filter.
  • Check the belts and hoses.
  • Check the fluid levels and look for leaks.
  • Inspect the brakes.
  • Inspect the tire condition.
  • Inspect the wiper blades and replace them if necessary.
  • Rotate the tires.

Every 22,500 Miles

All the above services, plus:

 

  • Change the transfer case fluid.
  • Replace the cabin air filter.

Every 45,000 Miles

All tasks included in the 7,500- and 22,500-mile GMC Sierra service intervals, as well as:

 

  • Change the brake and transmission fluids.
  • Inspect the spark plugs and wires.
  • Inspect the evaporative control system.
  • Replace the engine air filter.

At 150,000 Miles 

All services in the preceding GMC Sierra service schedules, in addition to:

 

  • Flush and replenish the cooling system.
  • Inspect the accessory drive belts.

Schedule Maintenance At Legacy Chevrolet of Waxahachie

Our expert service team is ready to help with any GMC Sierra 2500 or 3500 maintenance schedule needs. Schedule an appointment with us in Waxahachie, near Corsicana and Ennis, and drive confidently knowing your Sierra HD is in great hands. Browse our service and parts tips, as well.

 

More From Legacy Chevrolet of Waxahachie

  • Chevy Fleet Trucks for Sale in Ellis County, TX

    Ellis County is building. County population reached an estimated 250,720 in March 2026, making it the 15th fastest-growing county in the United States and the 8th fastest in Texas. State licensing records currently track 1,772 registered construction projects across 30 county cities worth a combined $11.4 billion, with 699 of them active right now. That…

  • How Do I Schedule a Chevy Service Appointment Online?

    To schedule a Chevy service appointment online, open our online service scheduler. Enter your vehicle year, model, and current mileage. Then pick the services you need, choose an open time slot, and submit your contact details. Adding your Vehicle Identification Number (VIN) is worth doing. It helps our service team confirm your exact trim specs…

  • 2026 Chevrolet Equinox EV Range and Charging: What the Waxahachie-to-Dallas Commute Actually Takes

    The 2026 Chevrolet Equinox EV carries an EPA-estimated 319 miles of range with front-wheel drive. Dual-motor all-wheel drive is EPA-estimated at 307 miles. Both use the same 85-kWh battery pack. Waxahachie to downtown Dallas is about 30 miles each way on I-35E. That makes a 60-mile round trip. Either setup covers a full commute day…