GMC Sierra 2500 HD 2023 

The 2023 GMC Sierra 2500 HD is a heavy-duty truck that sets a new bar for power, durability, and ability. The Sierra 2500 HD stands out on the road and is ready to take on the toughest jobs with ease thanks to its strong exterior. This truck can be powered by a variety of strong engines, including a strong turbodiesel V8. It has great towing and hauling capacities, making it a trusted partner for heavy-duty jobs. The Sierra 2500 HD has a roomy, well-equipped cabin that is full of modern technology and comforts to make driving more enjoyable. The Sierra 2500 HD puts safety first and gives you peace of mind on every trip. It has advanced safety features like blind-spot tracking, rear cross-traffic alert, and an available surround-view camera. The 2023 GMC Sierra 2500 HD is a powerful truck that is great for work or play. It has great speed, capability, and dependability.

2023 GMC SIERRA 1500 Specs, Price, Features, and Mileage (Brochure)

Canadian Vehicle Owners

A French language manual can be obtained from your dealer, at www.helminc.com, or from Helm, Incorporated Attention: Customer Service 47911 Halyard Drive Plymouth, MI 48170 USA

Using this Manual
To quickly locate information about the vehicle, use the Index in the back of the manual. It is an alphabetical list of what is in the manual and the page number where it can be found.

Danger, Warning, and Caution
Warning messages found on vehicle labels and in this manual describe hazards and what to do to avoid or reduce them.

Danger
Danger indicates a hazard with a high level of risk that will result in serious injury or death.

Warning
Warning indicates a hazard that could result in injury or death.

Caution
Caution indicates a hazard that could result in property or vehicle damage.
A circle with a slash through it is a safety symbol which means “Do not,” “Do not do this,” or “Do not let this happen.”

Keys, Doors, and Windows

Keys and Locks

Keys (Key Access)

Warning
Leaving children in a vehicle with the ignition key is dangerous and children or others could be seriously injured or killed. They could operate the power windows or other controls or make the vehicle move. The windows will function with the keys in the ignition, and children or others could be caught in the path of a closing window. Do not leave children in a vehicle with the ignition key.

Warning
If the key is unintentionally rotated while the vehicle is running, the ignition could be moved out of the RUN position. This could be caused by heavy items hanging from the key ring, or by large or long items attached to the key ring that could be contacted by the driver or steering wheel. If the ignition moves out of the RUN position, the engine will shut off, braking and steering power assist may be impacted, and airbags may not deploy. To reduce the risk of unintentional rotation of the ignition key, do not change the way the ignition key and Remote Keyless Entry (RKE) transmitter if equipped, are connected to the provided key rings. The ignition key key rings, and RKE transmitter, if equipped, are designed to work together as a system to reduce the risk of unintentionally moving the key out of the RUN position. The ignition key has a small hole to allow attachment of the provided key ring. It is important that any replacement ignition keys have a small hole. See your dealer if a replacement key is required. The combination and size of the rings that came with your keys were specifically selected for your vehicle. The rings are connected to the key like two links of a chain to reduce the risk of unintentionally moving the key out of the RUN position. Do not add any additional items to the ring attached to the ignition key. Attach additional items only to the second ring, and limit added items to a few essential keys or small, light items no larger than an RKE transmitter.

Interference from radio-frequency identification (RFID) tags may prevent the key from starting the vehicle. Keep RFID tags away from the key when starting the vehicle. The key is used for the ignition, all door locks, and the glove box. If equipped with memory seats, keys 1 and 2 are linked to seating positions of memory 1 or 2. 

Programming Keys

Follow these procedures to program up to eight keys to the vehicle.

Programming with Two Recognized Keys
To program a new key:

1. Insert the original, already programmed key in the ignition and turn the ignition on.
2. Turn the ignition off, and remove the key.
3. Quickly, within five seconds, insert the second original already programmed key in the ignition and turn the ignition on.
4. Turn the ignition off, and remove the key.
5. Insert the key to be programmed and turn the ignition on within five seconds.
6. After a few seconds, the security light will turn off once the key has been programmed.
7. Repeat Steps 1–5 if additional keys are to be programmed.
8. If a key is lost or damaged, see your dealer to have a new key made.

Programming without Recognized Keys
Program a new key to the vehicle when a recognized key is not available. Canadian regulations require that owners see their dealer. If two currently recognized keys are not available, follow this procedure to program the first key. This procedure will take approximately 30 minutes to complete for the first key. The vehicle must be off and all of the keys you wish to program must be with you.

1. Insert the new vehicle key into the ignition.
2. Turn the ignition on. The security light will come on.
3. Wait 10 minutes until the security light turns off.
4. Turn the ignition off.
5. Repeat Steps 2–4 two more times. After the third time, turn the ignition on; the key is learned and all previously known keys will no longer work with the vehicle.
6. To learn a second key, turn the ignition off, insert the second key to be learned, and turn the ignition on.

After two keys are learned, the remaining keys can be learned by following the procedure in “Programming with Two Recognized Keys.” The key has a bar-coded key tag that the dealer or qualified locksmith can use to make new keys. Store this information in a safe place, not in the vehicle. See your dealer if a replacement key or additional key is needed. If it becomes difficult to turn a key, inspect the key blade for debris. Periodically clean with a brush or pick. If locked out of the vehicle, see Roadside Assistance Program 0 399. With an active OnStar or connected service plan, an OnStar Advisor may remotely unlock the vehicle. See OnStar Overview 408.

Air Bag Restraint System

The actual airbags in the vehicle may differ from the illustration.

1. Driver’s front airbag
2. Passenger’s front airbag
3. Side airbag*
4.  Curtain air bag*
5. *: if equipped
   This vehicle is equipped with a Supplemental Air Bag System for the driver’s seat and front passenger’s seats. The front airbags are designed to supplement the three-point seat belts. For these airbags to provide protection, the seat belts must be worn at all times when driving. You can be severely injured or killed in an accident if you are not wearing a seat belt. Airbags are designed to supplement seat belts, but do not replace them. Also, airbags are not designed to deploy in every collision. In some accidents, seat belts are the only restraint protecting you.

WARNING

AIRBAG SAFETY PRECAUTIONS
ALWAYS use seat belts and Child Restraint Systems – every trip, every time, everyone! Even with airbags, you can be seriously injured or killed in a collision if you are improperly belted or not wearing your seat belt when the airbag inflates. NEVER place a child in any Child Restraint System or booster seat in the front passenger seat, unless the air bag is deactivated. An inflating air bag could forcefully strike the infant or child causing serious or fatal injuries. ABC – Always Buckle Children under age 13 in the back seat. It is the safest place for children of any age to ride. If a child age 13 or older must be seated in the front seat, he or she must be properly belted and the seat should be moved as far back as possible. All occupants should sit upright with the seatback in an upright position, centered on the seat cushion with their seat belt on, legs comfortably extended and their feet on the floor until the vehicle is parked and the vehicle is turned off. If an occupant is out of position during an accident, the rapidly deploying air bag may forcefully contact the occupant causing serious or fatal injuries. You and your passengers should never sit or lean unnecessarily close to the airbags or lean against the door or center console. Move your seat as far back as possible from front airbags, while still maintaining control of the vehicle. The U.S.

National Highway Traffic Safety Administration
(NHTSA) recommends that drivers allow at least 10 in. (25 cm) between the center of the steering wheel and the chest.

FAQ