2020 GMC SIERRA Get To Know Guide

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Review this Quick Reference Guide for an overview of some important features in your light-duty (LD) or heavy-duty (HD) GMC Sierra. Some optional equipment described in this guide may not be included in your vehicle. More information can be found in your Owner’s Manual and at my.gmc.com/learn. For easy reference, keep this guide with your Owner’s Manual in your glove box.
gmc.com
2020 SIERRA & SIERRA DENALI
1500/2500HD/3500HD
GETTING TO KNOW YOUR
Certain restrictions, precautions, and safety procedures apply to your v\
ehicle. Please read your Owner’s Manual for complete instructions.

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INSTRUMENT PANEL
Engine Start/Stop ButtonF
Cruise Control/ Forward Collision AlertF/Heated Steering WheelF Buttons
Electric Parking Brake Switch
Power MirrorF/Window Buttons
Driver Information Center ControlsF/Voice Recognition Buttons
Audio Volume Control (behind steering wheel)
Steering Wheel Adjustment Lever
Audio Next/Previous Favorite Station Controls (behind steering wheel)
Exterior/Instrument Panel/Cargo Lamp Controls
4WD ControlsF/Drive Mode Control
Turn Signal/Windshield Wipers Lever
Range Selection Mode Buttons
Driver Information Center
HUD ControlsF (behind steering wheel)
Low Fuel
Traction Control Off
Brake System
Cruise Control
StabiliTrak Active
StabiliTrak Off
Forward Collision Alert
Security
PARK Electric Parking Brake
Electric Parking Brake Service
Lights On Reminder
Airbag Readiness
Engine Oil Pressure
Check Engine
Lane Keep Assist (LD Model)
Symbols
LD gasoline model shown

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Refer to your Owner’s Manual to learn about the information being relayed by the lights, gauges and indicators on the instrument cluster.

See Introduction in your Owner’s Manual.
Driver’s Heated/Ventilated Seat ButtonsF
Infotainment System (8-inch* screen shownF)
Passenger’s Heated/Ventilated Seat ButtonsF
Infotainment System Controls Climate ControlsF
USB Ports/ Accessory Power Outlet/120-Volt Power OutletF
Integrated Trailer Brake ControlF
Wireless Charging PadF
Lane Keep AssistF (LD Model) or Lane Departure WarningF (HD Model)/Park AssistF/Auto Engine Stop-Start Disable (LD Model)/Power TailgateF/Hazard Warning Flashers Buttons
F Optional equipment *Screen measured diagonally
Traction Control-StabiliTrak Off/ Power OutletF/Hill Descent ControlF/ Power WindowsF/MultiPro Power Assist StepsF (LD Model) Buttons
Vehicle Ahead
Antilock Brake System
Low Tire Pressure
Door Ajar
Charging System
Driver Seat Belt Reminder
2 Passenger Seat Belt Reminder
AUTO 4WD Mode
Lane Departure Warning (HD Model)

4F Optional equipment
KEYLESS ACCESS SYSTEMF
REMOTE KEYLESS ENTRY TRANSMITTER (KEY FOB)F
The Keyless Access System enables operation of the doors and tailgate without
removing the Remote Keyless Entry (RKE) transmitter from your pocket or purse. The transmitter must be within 3 feet of the tailgate or the door being unlocked.
KEYLESS UNLOCKING
With the transmitter within range:
Press the button on the driver’s door handle to unlock the driver’s door; press it again within 5 seconds to unlock all doors and tailgate.
Press the button on a passenger door handle to unlock all doors and tailgate.
Press the lower button on the tailgate to lower the standard tailgate.
KEYLESS LOCKING
With the ignition off, the transmitter removed from the vehicle, and all doors closed:
Press the button on any door handle to lock all doors and tailgate immediately.
If Passive Locking is turned on, all doors will lock automatically after a short delay.
Note: To change the door lock and unlock settings, go to Settings > Vehicle > Remote Lock, Unlock, Start.See Keys, Doors and Windows in your Owner’s Manual.
Lock
Press to lock all doors and tailgate.
Unlock
Press to unlock the driver’s door.
Press again to unlock all doors and tailgate.
Press and hold until the win-dows are fully open.F To enable, go to Settings > Vehicle > Remote Lock, Unlock, Start.
Press and hold the Lock/Unlock button for 1 second to fold/unfold the power mirrors.F To enable, go to Settings > Vehicle > Comfort and Convenience.
Power Release TailgateF
Press twice to lower the tailgate.
Vehicle Locator/Panic Alarm
Press and release to locate your vehicle. The exterior lamps flash and the horn chirps 3 times.
Press and hold to activate the alarm. Press again to cancel the alarm.
Remote Vehicle StartF
Press and release the Lock button and then press and hold the button until the turn
signal lamps flash to start the engine from outside the vehicle. After entering the vehicle, turn on the ignition.
To cancel a remote start, press and hold the button until the parking lamps turn off.
See Keys, Doors and Windows in your Owner’s Manual.

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STARTING THE VEHICLE
With the vehicle in Park or Neutral, rotate the key clockwise to the Start position.
TURNING OFF THE VEHICLE
Shift to Park.
Push the key all the way in (1) and then rotate the key
counter-clockwise to the Lock/Off position (2). See Driving and Operating in your Owner’s Manual.
The Remote Keyless Entry transmitter must be in the vehicle to turn on the ignition.
STARTING THE ENGINE/ON
With the transmission in Park or Neutral, press and hold the brake pedal and then press the ENGINE START/STOP button to start the engine. The green button indicator will illuminate.
Note: If the Remote Keyless Entry transmitter battery is weak, place the transmitter in the pocket in the center storage compartment (under the bench seat) or center console cupholders (bucket seats) to enable the engine to start. Replace the transmitter battery as soon as possible.
STOPPING THE ENGINE/OFF
Shift to Park and press the ENGINE START/STOP button to turn off the engine. The green button indicator will turn off.
Power will be available for 10 minutes to operate the audio system until the driver’s door is opened and to operate the windows and sunroofF until any door is opened.
ACCESSORY MODE
With the engine off and the brake pedal not depressed, press the ENGINE START/STOP button to place the ignition in accessory mode. The amber button indicator will illuminate.
See Driving and Operating in your Owner’s Manual.
F Optional equipment
KEYLESS (PUSHBUTTON) STARTF
KEYED IGNITION SYSTEM (If EquIppEd)
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6F Optional equipment
STEERING WHEEL ADJUSTMENTF
With the vehicle parked, pull the lever under the steering column to adjust the steering wheel up or down and closer or farther away.F Push up the lever to lock the steering wheel in place.
See Instruments and Controls in your Owner’s Manual.
AUTO ENGINE STOP/START OPERATION (Ld ModEL)
To help conserve fuel, the auto engine stop/start system may automatically stop the engine, if operating conditions are met, when the brake pedal is pressed and the vehicle is at a complete stop. The tachom-eter gauge will read AUTO STOP. The audio system, climate controls and other acces-sories will continue to operate. When the brake pedal is released or the accelerator pedal is pressed, the engine will automati-cally restart. After parking the vehicle and turning off the engine, the tachometer gauge will read OFF.
The engine may remain running or restart when the vehicle is stopped if:
• A minimum vehicle speed is not reached.
• The engine or transmission is not at the required operating temperature.
• The outside temperature is not in the required operating range.
• The shift lever is in any gear other than Drive (D).
• The battery charge is low.
• The climate control system requires the engine to run based on the current settings.
• The Auto Stop has reached the maximum allowed time.
AUTO ENGINE STOP/START DISABLE
Press the $ button on the center of the instrument panel when the engine is run-ning to disable the auto engine stop/start system. The button indicator will turn off.
The auto engine stop/start system is enabled each time the vehicle is started.
See Driving and Operating in your Owner’s Manual.

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SEAT ADJUSTMENTS
A. Seat Cushion Adjustment
Move the horizontal control to move the seat forward or rearward and to tilt, raise or lower the seat.
B. Seatback Adjustment
Move the vertical control to recline or raise the seatback.
C. Lumbar Adjustment
Move the rear control to adjust the lumbar support.
SET MEMORY POSITIONS
1. With the vehicle in Park, adjust the driver’s seat and power outside mirrorsF to the desired positions.
2. Press and release the SET button on the driver’s door. A beep will sound.
3. Immediately press and hold button 1 or 2 until two beeps sound. Use the button that matches the Driver Information Center welcome message indicating driver 1 or 2 (key fob 1 or 2).
To store a seat position for more clearance when exiting the vehicle, repeat these steps using the Exit button instead of button 1 or 2.
RECALL POSITIONS
Press and hold button 1 or 2 or Exit until the set position is reached.
The memory/exit positions can be programmed to be recalled automatically when the ignition is turned on/off (for exit recall, the driver’s door must be opened).
To set the automatic recall options, go to Settings > Vehicle > Seating Position > Set Entry Memory and Set Exit Memory.
See Seats and Restraints in your Owner’s Manual.
POWER FRONT SEATSF
F Optional equipment
FRONT SEAT STORAGEF
The bench seat has a foldable center seatback and may have a center storage compartmentF.
Fold down the center seatback to access the storage compartment and cupholders. Press the latch and lift to open the storage compartment.
The bucket seats have a center console with a storage compartment.
Press the latch and lift to open the storage compartment.
See Seats and Restraints in your Owner’s Manual.
AC
B

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REAR SEATSF
POWER MIRRORSF/TRAILER-TOW MIRRORSF
REAR SEAT STORAGE
Seatback storage is an ideal location for charge cords, tablets, flashlights or rain gear.
Pull the tab (A) to access the storage compartment in the outboard seat-backs.
Lift up either side of the 60/40-split rear seat to access the storage areas under the seat.See Storage in your Owner’s Manual.
POWER MIRROR ADJUSTMENT
Press the Mirror Selector button to select the driver or passenger side
mirror; use the four-way control pad to adjust the mirror.
POWER FOLDING MIRROR
Press the Folding Mirror button to fold or unfold the mirrors.
TRAILER-TOW MIRRORS
The trailer-tow mirrors can be extended for better visibility when towing a trailer. The lower wide-field view mirror adjusts manually.
MANUAL EXTENSIONF
To extend the manual mirror, grasp the mirror housing and pull back and rear-ward in one motion. The housing extends on a curved arc. Push in the housing to return the mirror to its original position.
POWER EXTENSIONF (HD MODEL)
Press the Power Extend button to extend or retract the power mirror.
Note: Reset the power mirrors if they are adjusted manually by using the power controls to fold/unfold or extend/retract the mirrors to their normal position.
See Keys, Doors and Windows in your Owner’s Manual.
REAR SEAT REMINDER
A Rear Seat Reminder message may display on the Driver Information Center when the vehicle is turned off. Check the rear seat before exiting the vehicle. The system does not actually detect people or items in the rear seat; instead, under certain conditions, it detects when a rear door has been opened, indicating that there may be something in the rear seat. See Seats and Restraints in your Owner’s Manual.
F Optional equipment
A