FREQUENTLY ASKED QUESTIONS

E85 Ethanol, a blend of 85% ethanol and 15% gasoline, is a renewable fuel made mostly from U.S.-grown corn. E85 Ethanol Flexible Fuel Vehicles (FFV) are designed to run on E85, gasoline, or any blend of the two.

To learn about the specific items on your vehicle, please refer to Section 1 in your GMC Owner's Manual, "Seats and Restraint Systems". For general information please visit the safety section on the GM website.

Stability enhancement systems help drivers maintain control of vehicles during certain low traction driving conditions such as ice, snow, gravel, wet pavement and uneven road surfaces, as well as in emergency lane changes or avoidance maneuvers. For more details as well as how the system works, please visit the StabiliTrak section on the GM website.

A vehicle equipped with all-wheel drive temporarily transfers power to all four driving wheels automatically when the need is sensed by the vehicle. A vehicle equipped with four-wheel drive (4x4) can transfer power from two wheels to all four wheels upon driver demand, usually by pushing a button or turning a switch.

Curb Weight is the weight of an empty vehicle (without payload or driver) with standard equipment, fuel, coolant, and oil. It is also known as the vehicle weight. Gross Vehicle Weight is the actual weight of the entire vehicle and its contents, including fuel and occupants.

GVWR, when properly equipped, includes weight of vehicle, passengers, cargo, and equipment. Exceeding this weight is not recommended.

Payload is the maximum allowable weight of cargo to be carried in a vehicle, including all occupants and optional equipment. It is computed by subtracting curb weight from GVWR.

Your local GMC dealer should be able to assist you in finding the best conversion company to fit your needs and should be able to handle the details of having the conversion done to your vehicle. Go to the GMC Dealer Locator to locate a GMC dealer in your area.

The optional DURAMAX diesel V8 engine has been designed to satisfy the customer's need for heavy duty power, durability, and fuel efficiency. It is the most powerful diesel ever produced for a GM heavy duty pickup or chassis cab. It is currently available in 2500HD and 3500 GMC Sierra trucks. To learn more about the DURAMAX diesel engine and its future availability on other GMC vehicles, please contact your local GMC dealer. Go to the GMC Dealer Locator to locate a GMC dealer in your area.

OnStar is now offered on nearly every GM vehicle sold in the US and Canada. OnStar is the in-vehicle safety and security system created to help protect you and your family on the road. OnStar's innovative three-button system offers:
24-hour access to expertly trained, caring advisors
A connection to emergency assistance
Access to OnStar Hands-Free Calling in covered areas (prepaid calling charges apply)
Call 1-888-4-ONSTAR (1-888-466-7827) or visit onstar.com for system limitations and details.

All 2007 through 2014 passenger cars and light duty trucks are covered. The Powertrain Limited Warranty is 100,000 miles or 5 years (whichever comes first). It is fully transferable and there are no fees and no deductibles. The Roadside Assistance and Courtesy Transportation programs are also 100,000 miles or 5 years (whichever comes first). For more details, please visit your GMC dealer or click here.

The bumper-to-bumper New Vehicle Limited Warranty on new GMC light-duty trucks remains in effect for three years or 36,000 miles (whichever comes first). For more details, please visit your GMC dealer or click here.

This move is intended to provide you with an unprecedented level of value, confidence, and protection. As a result, GM is elevating your total vehicle ownership experience with the best, most comprehensive consumer confidence package in the industry.

Courtesy Transportation is also included for 5-years/100,000 miles (whichever comes first) on all 2007 through 2014 GMC light duty trucks. Whenever warranty repairs are required, several transportation options and/or reimbursement of certain transportation expenses are available for your convenience at participating dealers/retailers.

The bumper-to-bumper New Vehicle Limited Warranty covers vehicles registered in the U.S. and Canada from the date the vehicle is first delivered until it reaches three years or 36,000 miles (whichever occurs first). It covers the vehicle from bumper to bumper on any vehicle defect related to materials or workmanship. For further details, look in the Owner's Manual under "What Is Covered" and "What Is Not Covered."

GMC vehicles are designed and built to resist corrosion. All body and sheet metal components are warranted against rust-through corrosion for 6 years/100,000 miles (whichever comes first). Application of additional rust-inhibiting materials is neither necessary nor required under the Sheet Metal Coverage. GMC makes no recommendations concerning the usefulness or value of such products. Application of after-manufacture rustproofing products may create an environment which reduces the corrosion resistance built into your vehicle. Repairs to correct damage caused by such applications are not covered under your New Vehicle Limited Warranty. See your GMC dealer for terms of this limited warranty.

Your local GMC dealer should be able to assist you in finding the best conversion company to fit your needs and should be able to handle the details of having the conversion done to your vehicle. Go to the GMC Dealer Locator to locate a GMC dealer in your area.

From oil changes to engine replacements, these automotive experts, nationwide, are trained to care for your vehicle’s special needs, undergoing 1 million hours of instruction annually. They use the latest and most advanced diagnostic equipment available. Both ACDelco and Genuine GM Parts are tested for performance and reliability. So no matter what kind of vehicle you own, trust it to the Certified Service technicians at your GMC dealer.

When the “Change Engine Oil Soon” message displays oil change service is necessary for the vehicle as soon as possible, within the next 600 miles.If driving under the best conditions, the Engine Oil Life System might not indicate the need for vehicle service for more than a year. The motor oil and filter must be changed at least once a year and the Engine Oil Life System must be reset. Your GMC dealer has trained service technicians who will perform this work and reset the system. Click here to schedule service.

Each tire on a vehicle performs a different task, causing them to wear at different rates. Regular tire rotation allows tires to wear evenly, maximizing tire life and allowing tires to be replaced in sets of four, which is preferable.

Batteries wear out over time, but there are also issues that impact battery failure, for example, unusual “parasitic drains” such as adding accessories but not properly grounding them, infrequent startup, and discharged batteries freezing at 32 degrees Fahrenheit.

A blade’s natural rubber deteriorates after about 6 months, which is why it’s recommended that you replace your blades on a semi-annual basis. Streaking, squeaking, chattering, skipping, cracks, tears, splits, bent or broken frame, worn rubber, and rounded wiping edge are some common signs that your blades need to be changed.

Brake pads are equipped with wear indicators that produce a squealing noise when the brakes are almost worn out. The noise may be present with or without the brake pedal applied, but when noise is heard from the wear indicator, the brake pads should be replaced as soon as possible. Wear indicators are set to create noise when there is around 2 mm of brake pad friction material thickness remaining. In the case of assessing pad wear through inspection, pads should be replaced at or before 2 mm thickness is reached.

Brake rotors are marked with a “minimum thickness” on the casting (usually 2 mm to 3 mm less than the new rotor thickness). Rotors should be replaced before they reach this minimum thickness and should not be turned below this.

In a frontal or near-frontal impact of sufficient severity, the air bag sensing system detects that the vehicle is suddenly stopping as a result of a crash. The sensing system triggers a release of inflation gas. This gas inflates the air bag. The inflator, air bag, and related hardware are all part of the air bag module packed inside the steering wheel for the driver air bag and in the instrument panel for the right front passenger air bag.

The air bag is designed to inflate in moderate to severe frontal or near-frontal crashes. The air bag will inflate only if the impact speed is above the system's designed "threshold level." If your vehicle goes straight into a wall that doesn't move or deform, the threshold level is about 14 to 18 mph (23 to 29 km/h). The threshold level can vary, however, with specific vehicle design, so that it can be somewhat above or below this range. If your vehicle strikes something that will move or deform, such as a parked car, the threshold level will be higher. Inflation is determined by the angle of the impact and the vehicle's deceleration.

If the vehicle is equipped with seat mounted side impact or roof rail mounted head curtain air bags, those will deploy in a side impact. If the vehicle is equipped with a roll over capable head curtain air bags, a roll over sensor will deploy the head curtain air bags in a roll over incident. The frontal air bags will not deploy in a side impact or roll over, unless there is also a front or front-corner impact of sufficient severity to trigger the frontal air bags. The air bags will not deploy in a rear impact.

Yes! The air bag supplements the protection provided by the shoulder belts. Remember, the air bag is designed to inflate in moderate-to-severe frontal and near-frontal crashes. Safety belts can provide protection in impacts other than frontal and near-frontal collisions.

To learn about the specific items on your vehicle, please refer to Section 1 in your GMC Owner's Manual, "Seats and Restraint Systems." For general information please visit the safety section on the GM website.

There are no specific child restraints that GMC recommends or endorses, but we do have some information that might be helpful to you. GMC's seats and safety belt systems are designed to accommodate child restraints. However, we cannot be certain that all child restraints will be compatible with GMC vehicles. Our cars conform to SAE (Society of Automotive Engineers) J1819 standard, which is a recommended guideline for automotive safety belt and child restraint compatibility. Therefore, child restraints that conform to this standard will be more compatible with the seats and safety belt systems used in GMC vehicles. Also, your GMC Dealer can install a tether anchor kit (at no charge to you) that will anchor front-facing child seats.First, we recommend you work with a child-safety seat manufacturer, or a local retail outlet that sells child restraint seats, for possible suggestions on what type of seat would be most appropriate for your needs. You could also take your child restraint to a checkup event or contact a local CPS technician for additional assistance. There are a couple of websites that have some good information on this topic.

Try these:
NHTSA at www.nhtsa.dot.gov
National Safe Kids www.safekids.org
Safety Beltsafe USA www.carseat.org
American Academy of Pediatrics www.aap.org/family/carseatguide.html

In addition, you might want to try checking with your local hospital, police department and fire department for any information they might have.

GMC has a Roadside Assistance program to aid owners during an emergency and with other services. It is a service3 that comes with each new GMC car, pickup and SUV. Services provided include:

• 24-hour, 7-days-a-week toll-free 800 phone assistance
• Towing to the closest GMC dealer (from a legal roadway)
• Flat tire change (using vehicle's spare)
  

If your GMC vehicle is equipped with an active OnStar subscription, the customer can simply press the blue button for roadside service. If it is not equipped, please call 1-800-677-4927 to initiate roadside assistance for your vehicle.

Roadside Assistance is also included for 100,000 miles/5 years (whichever comes first) on all 2007 and 2008 GMC passenger cars and light-duty trucks. For model years prior to 2007, your vehicle is provided Roadside Assistance for the term that matches its bumper-to-bumper warranty. Please refer to the Owner's Manual for the specific warranty on your vehicle.

The GMC Owner Center is a complimentary website that allows you to:

• Get to know your vehicle and its features inside and out
• Store service records and easily track service history
• Watch how-to videos
• View your OnStar® Vehicle Diagnostics reports (part of your OnStar subscription)
• Check warranty status and access recall information

To view or download a courtesy electronic copy of your vehicle’s Owner’s Manual (for most vehicles from 1993 to present), visit the GMC Owner Center, select your year, make and model and then click “View Your Owner’s Manual”.

Yes. When you log in with your OnStar credentials, your personal information and vehicle information will be shared with the GMC Owner Center. If you have more than one vehicle with OnStar, you will be asked which vehicle(s) you would like to link to your GMC Owner Center account.

Yes. Your username and password will still allow you access to the GMC Owner Center, even if your OnStar subscription ends.

If you purchased your vehicle through a private sale, your vehicle ownership information may not be updated in our system. You can register this vehicle by inputting your vehicle’s Vehicle Identification Number (VIN) into the GMC Owner Center. If you purchased a new or used vehicle from a dealer, it may be a few weeks before your vehicle information is updated in our system.

There are several reasons that we may not recognize your VIN. If your vehicle is a new purchase, it may take up to 45 days for the VIN to be input into our systems. Or, perhaps the VIN was entered incorrectly. Please follow the instructions below. If you’d like to save these instructions for future use, you can download the PDF version.

Step 1:
Check to make sure you entered the correct VIN number by clicking on the Edit Vehicle Information button below.

Step 2:
If your VIN was entered correctly, it means that our system has not processed your vehicle purchase yet. You will still be able to access a wide variety of GMC Owner Center information if you re-register by Year, Make and Model.

Just do the following:

1. On the Edit Vehicle Information page, remove the vehicle you just registered

2. Click Add Vehicle. You will re-enter the vehicle registration process. Then, register by Year, Make, and Model from the bottom of the page and click “Save.”

3. Return to the edit vehicle information page and enter your VIN, then click Save and Finish. Once your vehicle is in our system, usually 45 days after purchase, information specific to your vehicle will be displayed.If you made a typing error and your VIN is incorrect, you can re-register the vehicle with the correct VIN.

Just do the following:

1. On the Edit Vehicle Information page, remove the vehicle you just registered

2. Click Add Vehicle. You will re-enter the vehicle registration process and may enter the correct VIN. If your VIN is still not recognized, you can start a Live Chat with our experts or call 1-866-694-6546 for assistance. If you own a vehicle that was not purchased in the United States, unfortunately we can’t recognize your vehicle at this time. Please visit your vehicle brand site for more information.

You can take one of two actions:

• You can create a GMC Owner Center account here, then add your OnStar account information to your profile. You will then be able to see your OnStar Vehicle Diagnostics information and other select OnStar details in your GMC Owner Center account.
• You can visit OnStar.com and set up an online account. Use that username and password to create a GMC Owner Center account. This will allow you to log in to both the GMC Owner Center and OnStar.com with the same username/password.
  

You can contact the GMC Owner Center by calling 1-866-694-6546. The hours of operation are Monday through Saturday, 8 a.m. – 9 p.m. EST.

The site will work on Windows XP, Windows 7 and Mac OS 10 operating systems. One of the following browsers is required, either the most recent version or the version prior to that:

• Firefox
• Safari
• Google
• Chrome
• Opera
• Internet Explorer

Your preferred dealer is either the dealer who sold you the vehicle or your selected OnStar preferred dealer. You can change your preferred dealer in the Preferred Dealer tool on the homepage.

You may not see service history records if your dealer does not participate in service history data sharing or if your service was performed within the past 2 weeks. If you’ve had your vehicle serviced at multiple dealerships, you may only be able to see some of your records, depending on dealer participation.

Along with displaying your personally entered OnStar service records, the GMC Owner Center also allows you to see dealer service history. It’s a convenient way to consolidate all of your account information, get valuable information on your vehicle and view recalls, all in one place. You can even create an account using your OnStar credentials. 

If you enter your service records in your onstar.com account, they will show up in your new GMC Owner Center account. However, if you enter them in your new GMC Owner Center account, they will not appear in your OnStar account at this time. 

If you subscribe to this service, OnStar Vehicle Diagnostics will check your vehicle's key systems about every 30 days—including engine, air bags and antilock brakes—while you drive. The system also provides important maintenance information related to oil life and tire pressure.* OnStar summarizes all this information in an easy-to-read email, so you can stay updated on the condition of your vehicle and have a greater peace of mind. To enroll for this complimentary service, go to onstar.com.

There is a slight time lag between when transactions occur on the GM Rewards Card website and when they are reflected on your GMC Owner Center account. It may take up to five days for the information to match. 

We pull data for your vehicle's OnStar Vehicle Diagnostics summary monthly. All information on your account should reflect what is included in your most recent OnStar Vehicle Diagnostics e-mail.

Most likely, you have just renewed your subscription. There is a slight time lag between when transactions occur on OnStar.com and when they are reflected on your GMC Owner Center account. It may take up to 30 days for the information to match.

Currently, our systems are only able to access SiriusXM account information for those customers who are OnStar subscribers. Check back soon for system updates that will allow you to see your subscription information without having an active OnStar account.

There may be a slight time delay between when SiriusXM account updates occur and when they are reflected on your GMC Owner Center account. You can always get your account status by logging in to the "Manage Account" section of siriusxm.com

GMC is a division of General Motors.

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