vehicle fuel care

You are currently viewing GMC.com (United States). Close this window to stay here or choose another country to see vehicles and services specific to your location.

CLOSE

GMC LIFE

HOW TO MAINTAIN FUEL WHEN YOUR GMC IS SITTING IDLE

SHARE:

When you purchase a GMC truck or SUV, you’re investing in a purpose-built vehicle that is meant to be used and enjoyed.

However, life is anything but predictable. If your truck or SUV remains parked for an extended period or minimally driven, these non-or low-driving patterns can affect your vehicle’s fuel performance. This can include:

  • Seasonal changes in vapor pressure – how gasoline volatility is matched to ambient temperatures in your region throughout the year to help improve vehicle start-up and drive performance.
  • Fuel stability – maximizing the storage stability of fuel in your vehicle’s tank.
  • Carbon deposits – fuel-related deposits that can reduce engine performance.
  • Biodiesel blend stability – specific stability requirements for renewable diesel fuel blends.

Fortunately, there are some simple things we can all do to minimize fuel-related problems from both short trips and slow fuel use.

Gasoline

  • Seasonal Fuel Volatility Changes: The fuel industry adjusts the vapor pressure of a gasoline throughout the year depending upon seasons. In colder climates, vapor pressures are increased to help your vehicle start quickly, and in the warmer summer months pressures are reduced because the vehicle doesn’t require the extra vapor pressure to start (ignite). As we transition seasons, having too much fuel vapor pressure during the warming ambient temperatures can lead to drive performance issues. The simplest way to avoid potential hot fuel handling issues is to monitor your travel habits and only fill your tank with enough fuel for no more than two months.
  • Fuel Stability: Vehicle fuel storage stability, even during the warm summer months, is not an issue since fuel remains stable for up to six months, which is longer than the typical driver’s fuel consumption. In the past, it was common to add bottled additives bought from auto supply stores to stabilize gasoline. Adding stability additives is no longer necessary even for gasoline blends that include up to 15 percent ethanol. GM vehicles’ fuel systems are designed with engineered materials durable to modern fuels.
  • Gasoline-Related Carbon Deposits: One of the best things you can do to help keep your vehicle’s engine running optimally and free of performance-robbing carbon deposits is regularly use TOP TIERTM Detergent Gasoline, which is sponsored by General Motors along with 10 other global auto manufacturers. The Top Tier logo is often displayed at retail outlets. Additionally, the Top Tier gas website will display which fuel brands in your area are “top tier.” A quick scan of any fuel comparison sites will show that these fuels do not cost any more than lower quality gasolines. Additional information can be found in the Fuels Section of your vehicle’s Owner's Manual. The only carbon-removing bottled additive GM recommends is ACDelco® GM Fuel System Treatment Plus, and only when your dealer service center recommends this for maintenance.

Diesel Fuel

  • Biodiesel Blend Stability: Biodiesel fuel quality degrades with time and exposure to high temperatures more quickly than today’s Ultra Low Sulfur Diesel (ULSD) fuel. Frequent refueling provides the best opportunity to have a supply of fresh fuel. For a short trip or low-use driving pattern where fuel remains in your vehicle’s tank over four to six weeks, avoid purchasing biodiesel blended fuels above 5 percent by volume (B5). Retail pumps dispensing blends below B5 are not required to be labeled with the concentration of biodiesel, however blends above B5 must be labeled with a notification stating the biodiesel blend “contains biomass-based diesel or biodiesel in quantities between 5 percent and 20 percent.”
  • Diesel-Related Carbon Deposits: GM recommends the use of TOP TIER Diesel Fuel to help reduce engine deposits and maintain optimal vehicle performance. Look for the TOP TIER logo at the retail outlet or see www.toptiergas.com for a list of TOP TIER Diesel Fuel marketers. If your area does not have TOP TIER Detergent Diesel, GM recommends the use of ACDelco® Diesel Fuel Conditioner for enhancing diesel fuel stability and reducing engine and fuel injector deposits. GM does not recommend other aftermarket diesel additives.

“GM vehicle owners can minimize fuel-related problems resulting from short-trip and slow fuel-use driving patterns by only filling your vehicle with enough fuel to consume within two months,” said Bill Studzinski, GM Fuels Group manager. “If possible, consume the current gasoline in your tank by June to avoid mismatches in winter gasoline volatility and summer ambient temperatures.”

More information on the proper fuels to purchase for your GM vehicle can be found in the Fuels Section of your vehicle’s Owner's Manual. You can find a digital copy of your Owner’s Manual by visiting the GMC Owner Center.

NEXT STEPS

RELATED STORIES

HOW-TO

alt

A simple system allows you to find your ideal vehicle, calculate payments, and initiate the purchase process – all from the comfort of your own home.

READ MORE

TECHNOLOGY

alt

By seamlessly integrating vehicle management and connectivity features into one application, the myGMC app is a valuable tool. Here are six ways myGMC allows you to connect with your GMC.

READ MORE

HOW-TO

alt

Spring has sprung, and that means it’s time to start making your seasonal maintenance list. Lucky for you, we’ve already got one prepared so your GMC won’t get left in the dust.

READ MORE
  • 7,700-lb rating requires a properly equipped 2WD Canyon Elevation Crew Cab short bed model with available Duramax 2.8L I4 Diesel engine and Trailering Package (late availability). Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. See your GMC dealer for details. Click here to see all GMC destination freight charges.

  • Requires 4WD Double Cab with available 6.2L V8 and Max Trailering Package. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Requires properly equipped 3500 Regular Cab DRW Long Box 2WD model with available 6.6L Duramax Turbo Diesel engine and gooseneck hitch. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • SLE models only.

  • 7,550-lb rating requires a properly equipped 4WD Canyon Denali model with available Duramax 2.8L I4 Diesel engine (late availability). Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options oraccessories may reduce the amount you can tow.

  • Requires 2WD Denali Short Box model with 5.3L V-8 engine. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Requires properly equipped 3500 Crew Cab DRW Long Box 4WD model with available 6.6L Duramax Turbo Diesel engine and fifth wheel or gooseneck hitch. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Savana Passenger's 9,600-lb rating requires a 2500 or 3500 Regular wheelbase model with available 6.0L V8 engine and trailering equipment package. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Savana Cargo’s 10,000-lb rating requires  the available 6.0L V8 engine and trailering equipment package.  Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual.  The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Savana Cutaway’s 8,940-lb rating requires a 4500 Series 159" Wheelbase model with available 6.0L V8 engine. These maximum payload ratings are intended for comparison purposes only. Before you buy a vehicle or use it to haul people or cargo, carefully review the vehicle loading section of the Owner’s Manual and check the carrying capacity of your specific vehicle on the label on the inside of the driver’s door jamb.

  • Gross Combination Weight Rating (GCWR). When properly equipped; includes weight of vehicle and trailer combination, including the weight of driver, passengers, fuel, optional equipment and cargo in the vehicle and trailer.

  • Maximum Gross Vehicle Weight Rating (GVWR). When properly equipped; includes weight of vehicle, passengers, cargo and equipment.

  • Canyon’s 7000-lb rating requires available trailering package and 3.6L V-6 engine. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Sierra's 12,500-lb rating requires Sierra Double Cab or Crew Cab Short box 2wd with 6.2L EcoTec3 V8 engine and NHT Max Trailering Package. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Trailer weight ratings are calculated assuming properly equipped vehicle, plus driver and one passenger. The weight of other optional equipment, passengers and cargo will reduce the trailer weight your vehicle can tow. See dealer for details.

  • Sierra Denali's 9,300-lb rating requires 2wd. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Savana Passenger's 10,000-lb rating requires 2500 Wheel Base with 6.0L V8 engine. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Savana Cargo's 10,000-lb rating requires 6.0L V8 engine. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • These maximum payload ratings are intended for comparison purposes only. Before you buy a vehicle or use it to haul people or cargo, carefully review the vehicle loading section of the Owner’s Manual and check the carrying capacity of your specific vehicle on the label on the inside of the driver’s door jamb.

  • Gross Combination Weight Rating (GCWR). When properly equipped, includes weight of vehicle, passengers, cargo and equipment.

  • Canyon’s 7700-lb rating requires 2WD Crew Cab model with available Duramax 2.8L I-4 Diesel engine. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Requires 2WD Crew Cab DRW equipped with 6.6L Duramax Diesel and fifth-wheel or gooseneck hitch. Trailer weight ratings are calculated assuming properly equipped vehicle, plus driver and one passenger. The weight of other optional equipment, passengers and cargo will reduce the trailer weight your vehicle can tow. See dealer for details.

  • Starting at price for base Sierra HD. The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. See your GMC dealer for details. Click here to see all GMC destination freight charges.

  • Requires properly equipped 3500 Regular Cab DRW Long Box 2WD model with available 6.6L Duramax Turbo Diesel engine and gooseneck hitch. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. See your GMC dealer for details. Click here to see all GMC destination freight charges. Bed/Roof-Mounted Bicycle Carriers shown. Requires crossbars or Thule Rack Solution. Non-GM warranty. Warranty by Thule®. See dealer for more information.

  • These maximum payload ratings are intended for comparison purposes only. Before you buy a vehicle or use it to haul people or cargo, carefully review the vehicle loading section of the Owner’s Manual and check the carrying capacity of your specific vehicle on the label on the inside of the driver’s door jamb.

  • Available. Requires 2.0L Turbocharged gas engine.

  • Terrain's 3,500-lb rating requires available 2.0L Turbocharged gas engine and available trailering equipment. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Requires available 3.6L V6 engine. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Yukon’s 8,500-lb rating requires short wheelbase 2wd with 5.3L EcoTec3 V8 engine and HD Trailering Package. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Requires 2WD Denali Short Box model with 5.3L V-8 engine. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • Savana Cutaway’s 9,006-lb rating requires a 4500 Series 159" Wheelbase model with available 6.0L V8 engine. These maximum payload ratings are intended for comparison purposes only. Before you buy a vehicle or use it to haul people or cargo, carefully review the vehicle loading section of the Owner’s Manual and check the carrying capacity of your specific vehicle on the label on the inside of the driver’s door jamb.

|