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2021 GMC Sierra 1500 Owners Manual - Keys and Locks



Keys and Locks

Keys (Key Access)

The ignition key and 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. See Memory Seats 0 49.

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

Programming with Two Recognized Keys

To program a new key:

    Insert the original, already programmed key in the ignition and turn the ignition on.
    Turn the ignition off, and remove the key.
    Quickly, within five seconds, insert the second original already programmed key in the ignition and turn the ignition on.
    Turn the ignition off, and remove the key.
    Insert the key to be programmed and turn the ignition on within five seconds.
    After a few seconds, the security light will turn off once the key has been programmed.
    Repeat Steps 1–5 if additional keys are to be programmed.

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.

    Insert the new vehicle key into the ignition.
    Turn the ignition on. The security light will come on.
    Wait 10 minutes until the security light turns off.
    Turn the ignition off.
    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.

    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 0 428.

With an active OnStar or connected service plan, an OnStar Advisor may remotely unlock the vehicle. See OnStar Overview

0 437.

Keys (Keyless Access)

If the vehicle has the Keyless Access system, the transmitter has a button on the side of the transmitter used to remove the key.

This key is used for the driver door and glove box.

Press the button to remove the key. Never pull the key out without pressing the button.

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.

With an active OnStar or connected service plan, an OnStar Advisor may remotely unlock the vehicle. See OnStar Overview

0 437.

If locked out of the vehicle, see Roadside Assistance Program 0 428.

If equipped with memory seats, RKE transmitters 1 and 2 are linked to seating positions of memory 1 or 2. See Memory Seats 0 49.

See Radio Frequency Statement 0 433.

If there is a decrease in the Remote Keyless Entry (RKE) operating range:

    Check the distance. The transmitter may be too far from the vehicle.
    Check the location. Other vehicles or objects may be blocking the signal.
    Check the transmitter's battery. See "Battery Replacement" later in this section.
    If the transmitter is still not working correctly, see your dealer or a qualified technician for service.

The RKE transmitter functions may work up to 60 m (197 ft) away from the vehicle.

Other conditions can affect the performance of the transmitter. See Remote Keyless Entry (RKE) System 0 10.

/ : Press and release Q, then immediately press and hold / until the turn signal

lamps flash or for at least four seconds. The engine may be started from outside the vehicle using the RKE transmitter. See Remote Vehicle Start 0 20.

Q : Press to lock all doors.

If enabled, the turn signal lamps may flash and/or the horn may sound on the second press to indicate locking has occurred.

If enabled, the horn chirps when Q is pressed again within three seconds. See Vehicle Personalization 0 130.

Pressing Q arms the alarm system. See

Vehicle Alarm System 0 31.

If equipped with remote mirror folding, pressing and holding Q for one second will fold the mirrors, if enabled. See Vehicle Personalization 0 130.

K : Press once to unlock only the driver door. If K is pressed again within three seconds, all remaining doors unlock. The interior lamps may come on and stay on for 20 seconds or until the ignition is turned on.

If enabled, the turn signal lamps flash twice to indicate unlocking has occurred.

If enabled, the exterior lamps may turn on. See Vehicle Personalization 0 130.

Pressing K on the RKE transmitter disarms the alarm system. See Vehicle Alarm System 0 31.

If equipped with remote mirror folding, pressing and holding K for one second will unfold the mirrors, if enabled. See Vehicle Personalization 0 130.

Press and hold K to remotely open the windows, if enabled. See Vehicle Personalization 0 130.

: Press twice quickly to release the tailgate, if equipped.

7 : Press and release to initiate the vehicle locator. The turn signal lamps flash and the horn sounds three times.

Press and hold 7 for more than three seconds to activate the panic alarm. The turn signal lamps flash and the horn sounds repeatedly for 30 seconds. The alarm turns off when the ignition is turned on or

7 is pressed again. The ignition must be off

for the panic alarm to work.

Only RKE transmitters programmed to this vehicle will work. If a transmitter is lost or stolen, a replacement can be purchased and programmed through your dealer. Each vehicle can have up to eight transmitters programmed to it. See your dealer for transmitter programming.

Replace the battery in the transmitter soon if the REPLACE BATTERY IN REMOTE KEY

displays in the Driver Information Center (DIC).

To replace the battery:

    Separate and remove the back cover of the transmitter with a flat, thin object, such as a coin.
    Press and slide the battery down toward the pocket of the transmitter in the direction of the key ring. Do not use a metal object
    Remove the battery.
    Insert the new battery, positive side facing up. Replace with a CR2032 or equivalent battery.
    Push together the transmitter back cover top side first, and then the bottom toward the key ring.

The Keyless Access system allows for vehicle entry when the transmitter is within 1 m

(3 ft). See "Keyless Access Operation" later in this section.

The RKE transmitter functions may work up to 60 m (197 ft) away from the vehicle.

Other conditions can affect the performance of the transmitter. See Remote Keyless Entry (RKE) System 0 10.

The key that is part of the RKE transmitter can be used for all locks.

Remove the key by pressing the button on the side of the RKE transmitter near the bottom and pull the key out. Never pull the key out without pressing the button.

See your dealer if a new transmitter is needed.

/ : Press and release Q, then immediately press and hold / until the turn signal

lamps flash or for at least four seconds. The engine may be started from outside the vehicle using the RKE transmitter. See Remote Vehicle Start 0 20.

Q : Press to lock all doors and the tailgate, if equipped.

If enabled, the turn signal lamps flash and/ or the horn may sound on the second press to indicate locking has occurred. If enabled, the horn chirps when Q is pressed again within three seconds. See Vehicle

Personalization 0 130.

If the driver door is open when Q is pressed, all doors will lock and then the driver door will immediately unlock,

if enabled. See Vehicle Personalization 0 130.

If the passenger door is open when Q is pressed, all doors lock.

Pressing Q arms the alarm system. See

Vehicle Alarm System 0 31.

If equipped with remote mirror folding, pressing and holding Q for one second will fold the mirrors, if enabled. See Vehicle Personalization 0 130.

K : Press once to unlock only the driver door. If K is pressed again within three seconds, all remaining doors and the tailgate unlock. The interior lamps may come on and stay on for 20 seconds or until the ignition is turned on.

If enabled, the turn signal lamps flash twice to indicate unlocking has occurred.

If enabled, the exterior lamps may turn on. See Vehicle Personalization 0 130.

Pressing K on the RKE transmitter disarms the alarm system. See Vehicle Alarm System 0 31.

If equipped with remote mirror folding, pressing and holding K for one second will unfold the mirrors, if enabled. See Vehicle Personalization 0 130.

Press and hold K until the windows fully open, if remote window operation is enabled. See Vehicle Personalization 0 130.

: Press twice quickly to release the tailgate, if equipped.

7 : Press and release to initiate vehicle locator. The turn signal lamps flash and the horn sounds three times.

Press and hold 7 for more than three seconds to activate the panic alarm. The turn signal lamps flash and the horn sounds repeatedly for 30 seconds. The alarm turns off when the ignition is turned on or

7 is pressed again. The ignition must be off

for the panic alarm to work.

The Keyless Access system allows for doors and the tailgate to be accessed without pressing the RKE transmitter button. The RKE transmitter must be within 1 m (3 ft) of the

tailgate or door being opened. If the vehicle has this feature, there will be a button on the outside door handles.

Keyless Access can be programmed to unlock all doors on the first lock/unlock press from the driver door. Keyless Unlocking can also be turned off. See Vehicle Personalization 0 130.

If equipped with memory seats, RKE transmitters 1 and 2 are linked to seating positions of memory 1 or 2. See Memory Seats 0 49.

Keyless Unlocking/Locking from the Driver Door

When the doors are locked and the RKE transmitter is within 1 m (3 ft) of the door handle, pressing the lock/unlock button on the driver door handle will unlock the driver door. If the lock/unlock button is pressed again within five seconds, all passenger doors and the tailgate will unlock.

Driver Side Shown, Passenger Side Similar

Pressing the lock/unlock button will cause all doors to lock if any of the following occur:

    It has been more than five seconds since the first lock/unlock button press.
    Two lock/unlock button presses were used to unlock all doors.
    Any vehicle door has been opened and all doors are now closed.

Keyless Unlocking/Locking from the Passenger Doors

When the doors are locked and the RKE transmitter is within 1 m (3 ft) of the door handle, pressing the lock/unlock button on a passenger door handle will unlock all doors.

Pressing the lock/unlock button will cause all doors to lock if any of the following occur:

    The lock/unlock button was used to unlock all doors.
    Any vehicle door has been opened and all doors are now closed.

Disable/Enable Keyless Unlocking of Exterior Door Handles and Tailgate

If equipped, keyless unlocking of the exterior door handles and tailgate can be disabled and enabled.

Disabling Keyless Unlocking:

With the vehicle off, press and hold Q and K on the RKE transmitter at the same time for approximately three seconds. The turn signal lamps will flash four times quickly to indicate access is disabled. Using any exterior handle to unlock the doors or open the tailgate will cause the turn signal lamps to flash four times quickly, indicating access is disabled. If disabled, disarm the alarm system before starting the vehicle.

Enabling Keyless Unlocking:

With the vehicle off, press and hold Q and K on the RKE transmitter at the same time for approximately three seconds. The turn signal lamps will flash twice quickly to indicate access is enabled.

Passive Locking

This feature will lock the vehicle several seconds after all doors are closed, if the vehicle is off and at least one RKE transmitter has been removed from the interior, or none remain in the interior.

If other electronic devices interfere with the RKE transmitter signal, the vehicle may not detect the RKE transmitter inside the vehicle. If passive locking is enabled, the doors may lock with the RKE transmitter inside the vehicle. Do not leave the RKE transmitter in an unattended vehicle.

To customize the doors to automatically lock when exiting the vehicle, see "Remote Lock, Unlock, Start" under Vehicle Personalization 0 130.

Temporary Disable of Passive Locking

Temporarily disable passive locking by pressing and holding K on the interior door switch with a door open for at least

four seconds, or until three chimes are heard. Passive locking will then remain disabled until Q on the interior door is pressed, or until the vehicle is turned on.

Remote Left in Vehicle Alert

When the vehicle is turned off and an RKE transmitter is left in the vehicle, the horn will chirp three times after all doors are closed. To turn on or off see Vehicle Personalization 0 130.

Remote No Longer in Vehicle Alert

If the vehicle is on with a door open and then all doors are closed, the vehicle will check for RKE transmitters inside. If an RKE transmitter is not detected, the Driver Information Center (DIC) will display NO REMOTE DETECTED and the horn will chirp three times. This occurs only once each time the vehicle is driven. To turn on or off see Vehicle Personalization 0 130.

Key Access

To access a vehicle with a dead transmitter battery, see Door Locks 0 21.

Only RKE transmitters programmed to the vehicle will work. If a transmitter is lost or stolen, a replacement can be purchased and programmed through your dealer. The vehicle can be reprogrammed so that lost or stolen transmitters no longer work. Each vehicle can have up to eight transmitters matched to it.

Programming with Recognized Transmitters

A new transmitter can be programmed to the vehicle when there are two recognized transmitters.

To program, the vehicle must be off and all transmitters, both currently recognized and new, must be with you.

    Remove the key from a recognized transmitter.
    Place the two recognized transmitters in the cupholder or on the passenger seat.
    Insert the vehicle key into the key lock cylinder on the driver door handle. Then turn the key counterclockwise, to the unlock position, five times within

10 seconds.

The DIC displays READY FOR REMOTE#3, 4, 5 ETC.

Transmitter Pocket without Bucket Seats (Lower Compartment)

Transmitter Pocket with Bucket Seats

    Place the new transmitter in the transmitter pocket/insert.
    Press ENGINE START/STOP. When the transmitter is learned, the DIC display will show that it is ready to program the next transmitter.
    Remove the transmitter from the transmitter pocket and press K or Q on the transmitter.

To program additional transmitters, repeat Steps 4–6.

When all additional transmitters are programmed, press and hold ENGINE START/STOP for approximately

12 seconds to exit programming mode.

    Return the key back into the transmitter.

Programming without Recognized Transmitters

If two currently recognized transmitters are not available, follow this procedure to program up to eight transmitters. This feature is not available in Canada. This procedure will take approximately

30 minutes to complete. The vehicle must be off and all transmitters to be programmed must be with you.

    Remove the vehicle key from the transmitter.
    Insert the vehicle key into the key lock cylinder on the driver door handle; then turn the key counterclockwise, to the unlock position, five times within

10 seconds.

The DIC displays REMOTE LEARN PENDING, PLEASE WAIT.

    Wait for 10 minutes until the DIC displays PRESS ENGINE START BUTTON TO LEARN, then press ENGINE START/STOP.

The DIC will again display REMOTE LEARN PENDING, PLEASE WAIT.

    Repeat Step 3 two additional times. After the third time all previously known transmitters will no longer work with the vehicle. Remaining transmitters can be relearned during the next steps.

The DIC should now display READY FOR REMOTE # 1.

Transmitter Pocket without Bucket Seats (Lower Compartment)

Transmitter Pocket with Bucket Seats

    Place the new transmitter in the transmitter pocket/insert.
    Press ENGINE START/STOP. When the transmitter is learned, the DIC display will show that it is ready to program the next transmitter.
    Remove the transmitter from the transmitter pocket/insert and press K or Q on the transmitter.

To program additional transmitters, repeat Steps 5–7.

When all additional transmitters are programmed, press and hold ENGINE START/STOP for approximately

12 seconds to exit programming mode.

    Return the key back into the transmitter.

If the transmitter battery is weak or if there is interference with the signal, the DIC may display NO REMOTE DETECTED or NO REMOTE KEY WAS DETECTED PLACE KEY IN TRANSMITTER POCKET THEN START YOUR

VEHICLE when starting the vehicle. To start the vehicle:

Transmitter Pocket without Bucket Seats (Lower Compartment)

Transmitter Pocket with Bucket Seats

    Place the transmitter in the transmitter pocket/insert.
    With the vehicle in P (Park) or N (Neutral) press the brake pedal and ENGINE START/STOP.

Replace the transmitter battery as soon as possible.

2. Insert a flat, thin object in the center of the transmitter to separate and remove the back cover.

Replace the battery in the transmitter soon if the DIC displays REPLACE BATTERY IN REMOTE KEY.

To replace the battery:

    Press the button on the RKE transmitter to remove the key. Never pull the key out without pressing the button.

    Lift the battery with a flat object.
    Remove the battery.
    Insert the new battery, positive side toward the back cover. Replace with a CR2032 or equivalent battery.
    Push together the transmitter.
    Insert the key back into the RKE transmitter.

If equipped with the remote start feature, the climate control system will come on when the vehicle is started remotely, depending on the outside temperature.

The rear defog and heated and ventilated seats, if equipped, may also come on. See Heated and Ventilated Front Seats 0 52 and Vehicle Personalization 0 130.

If equipped, the automatic heated steering wheel may also come on. See Heated Steering Wheel 0 99.

Laws in some communities may restrict the use of remote starters. Check local regulations for any requirements on remote starting of vehicles.

Do not use remote start if the vehicle is low on fuel. The vehicle may run out of fuel.

The vehicle cannot be remote started if:

    The RKE transmitter is inside the vehicle or if the key is in the ignition.
    The hood is not closed.
    There is an emission control system malfunction and the lamp is on.
    The ignition is in any mode other than off.
    The hazard warning flashers are on.
    Two remote starts or a remote start with an extension have been used.
    The vehicle is not in P (Park).

The engine will turn off during a remote vehicle start if:

    The coolant temperature gets too high.
    The oil pressure gets low.

The RKE transmitter range may be reduced while the vehicle is running.

Other conditions can affect the performance of the transmitter. See Remote Keyless Entry (RKE) System 0 10.

Starting the Engine Using Remote Start

    Press and release Q.
    Immediately press and hold / until the turn signal lamps flash or for at least four seconds.

When the vehicle starts, the parking lamps will turn on. The doors will be locked and the climate control system may come on.

The engine will continue to run for 15 minutes. After 30 seconds, repeat Steps 1 and 2 for a 15-minute time extension.

Turn the ignition on to operate the vehicle.

Extending Engine Run Time

The engine run time can be extended by 15 minutes, for a total of 30 minutes,

if during the first 15 minutes Steps 1 and 2 are repeated while the engine is still running. An extension can be requested 30 seconds after starting.

A maximum of two remote starts, or a single start with an extension, is allowed between ignition cycles.

The vehicle's ignition must be turned on and then back off to use remote start again.

Canceling a Remote Start

To cancel a remote start, do one of the following:

    Press and hold / until the parking lamps turn off.
    Turn on the hazard warning flashers.
    Turn the ignition on and then off.

There are several ways to lock and unlock the vehicle.

From outside:

    Use the Remote Keyless Entry (RKE) transmitter.
    Use Keyless Access, if equipped.
    Use the key in the driver door or the passenger door, if equipped.

From inside, use the power door locks or the manual door locks. To lock the door with the manual door locks, push down on the manual lock knob.

From inside, pull the door handle once to unlock the door. Pull the handle again to open the door.

See Vehicle Alarm System 0 31.

Keyless Access

If equipped, the remote key must be within 1 m (3 ft) of the tailgate or door being opened or locked. Press the button on the door handle to open. See "Keyless Access

Operation" in Remote Keyless Entry (RKE)

System Operation (Key Access) 0 10 or

Remote Keyless Entry (RKE) System Operation (Keyless Access) 0 13.

Free-Turning Locks

The door key lock cylinder turns freely when either the wrong key is used, or the correct key is not fully inserted. The free-turning door lock feature prevents the lock from being forced open. To reset the lock, turn it to the vertical position with the correct key

fully inserted. Remove the key and insert it again. If this does not reset the lock, turn the key halfway around in the cylinder and repeat the reset procedure.

If equipped with power door locks.

Q : Press to lock the doors.

K : Press to unlock the doors.

If equipped, this feature delays the locking of the doors until five seconds after all doors are closed.

Delayed locking can only be turned on when the Open Door Anti-Lockout feature has been turned off.

When Q is pressed on the power door lock switch while the door is open, a chime will sound three times indicating delayed locking is active.

The doors will lock automatically

five seconds after all doors are closed. If a door is reopened before that time, the five-second timer will reset when all doors are closed again.

Press Q on the door lock switch again or press Q on the RKE transmitter to lock the doors immediately.

This feature can be programmed. See Vehicle Personalization 0 130.

If equipped, the doors will lock automatically when all doors are closed, the ignition is on, and the vehicle is shifted out of P (Park).

If a vehicle door is unlocked, and then opened and closed, the doors will lock either when your foot is removed from the brake or the vehicle speed becomes faster than

13 km/h (8 mph).

To unlock the doors:

    Press K on the power door lock switch.
    Shift the transmission into P (Park).

Automatic door locking cannot be disabled. Automatic door unlocking can be programmed. See Vehicle Personalization

0 130.

If equipped, the ignition is on or in ACC/ ACCESSORY and the power door lock switch is pressed with the driver door open, all the doors will lock and only the driver door will unlock.

If the vehicle is off and locking is requested while a door is open, when all doors are closed the vehicle will check to the Keyless Access function (if equipped). If an RKE transmitter is detected and the number of RKE transmitters inside has not reduced, the driver door will unlock and the horn will chirp three times.

Lockout Protection can be manually overridden with the driver door open by pressing and holding Q on the power door lock switch.

Open Door Anti-Lockout

If equipped, the Open Door Anti-Lockout is turned on and the vehicle is off, the driver door is open, and locking is requested, all the doors will lock and the driver door will unlock. The Open Door Anti-Lockout feature can be turned on or off. See Vehicle Personalization 0 130.

The rear door safety locks prevent passengers from opening the rear doors from inside the vehicle.

The safety lock is on the inside edge of the rear doors. To use the safety lock:

    Move the lever down to the lock position.
    Close the door.
    Do the same for the other rear door.

To open a rear door when the safety lock is on:

    Unlock the door by activating the inside handle, by pressing the power door unlock switch, or by using the Remote Keyless Entry (RKE) transmitter.
    Open the door from the outside.

When the safety lock is enabled, adults and older children will not be able to open the rear door from the inside. Cancel the safety locks to enable the doors to open from the inside.

To cancel the safety lock:

    Unlock the door and open it from the outside.
    Move the lever up to unlock. Do the same for the other door.

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