seat memory GMC SIERRA 2023 User Guide

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16504257) - 2023 - CRC - 5/9/22
56 Seats and Restraints
Obstructions
If something has blocked the seat while
recalling a memory position, the recall may
stop. Remove the obstruction and try the
recall again. If the memory position still
does not recall, see your dealer.
Heated and Ventilated Front
Seats
{Warning
If temperature change or pain to the skin
cannot be felt, the seat heater may cause
burns. To reduce the risk of burns, use
care when using the seat heater,
especially for long periods of time. Do
not place anything on the seat that
insulates against heat, such as a blanket,
cushion, cover, or similar item. This may
cause the seat heater to overheat. An
overheated seat heater may cause a burn
or may damage the seat.Heated and Ventilated Seat Buttons Shown,Heated Seat Buttons Similar
If equipped, the buttons are on the center
stack. To operate, the engine must be
running.
Press
Ior+to heat the driver or
passenger seatback only.
Press
Jorzto heat the driver or
passenger seat cushion and seatback.
Press
Cor{to ventilate the driver or
passenger seat.
The indicator light on the button comes on
when this feature is on. Press the button once for the highest
setting. With each press of the button, the
seat will change to the next lower setting,
and then to the off setting. The indicator
lights next to the buttons indicate three for
the highest setting and one for the lowest.
If the heated seats are on high, their level
may automatically be lowered after
approximately 30 minutes.
Remote Start Heated and Ventilated Seats
If equipped, the heated seats will turn on
automatically during a remote start if it is
cold outside and the ventilated seats will
turn on automatically if it is hot outside.
If equipped, the heated steering wheel will
turn on automatically during a remote start
if it is cold outside. The heated and
ventilated seat indicators and heated
steering wheel indicator may come on
during this operation.
The heated and ventilated seats and heated
steering wheel may cancel when the vehicle
is started. These features can be manually
selected after the vehicle is turned on.
The temperature performance of an
unoccupied seat may be reduced. This is
normal.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16504257) - 2023 - CRC - 5/9/22
Index 423
Map Data Updates . . . . . . . . . . . . . . . . . . . . . . . . 171
Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
MediaAvoiding Untrusted Devices . . . . . . . . . . . . 158
Memory Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Messages Engine Power . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Vehicle Speed . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Mirrors Automatic Dimming . . . . . . . . . . . . . . . . . . . . 39
Automatic Dimming Rearview . . . . . . . . . . 41
Blind Spot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Convex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Folding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Interior Rearview . . . . . . . . . . . . . . . . . . . . . . . 40
Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Manual Rearview . . . . . . . . . . . . . . . . . . . . . . . 41
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Rear Camera . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Tilt in Reverse . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Trailer Tow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Mode Driver Control . . . . . . . . . . . . . . . . . . . . . . . . . 243
Monitor System, Tire Pressure . . . . . . . . . . . 343
Multi-band Antenna . . . . . . . . . . . . . . . . . . . . . .158
Multi-Point Vehicle Inspection (MPVI) . . . . 387N
Navigation Connected Services . . . . . . . . . . . . . . . . . . . . 413
Destination . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Using the System . . . . . . . . . . . . . . . . . . . . . . 160
New Vehicle Break-In . . . . . . . . . . . . . . . . . . . . . 221
Noise Control System . . . . . . . . . . . . . . . . . . . . . 321
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Off-Road Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306
Engine Oil Life System . . . . . . . . . . . . . . . . . 308
Engine Oil Pressure Gauge . . . . . . . . . . . . . . 116
Pressure Light . . . . . . . . . . . . . . . . . . . . . . . . . 126
Older Children, Restraints . . . . . . . . . . . . . . . . . .75
Online Account . . . . . . . . . . . . . . . . . . . . . . . . . . 398
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 407 Additional Information . . . . . . . . . . . . . . . . . 410
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 408
OnStar Emergency . . . . . . . . . . . . . . . . . . . . . . . 409
OnStar Security . . . . . . . . . . . . . . . . . . . . . . . . . . 409 Operating Mode
Overheated Engine Protection . . . . . . . . . 315
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Overheated Engine Protection Operating Mode . . . . . . . . . . . . . . . . . . . . . . . . 315
Overheating, Engine . . . . . . . . . . . . . . . . . . . . . . 313
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Instrument Panel . . . . . . . . . . . . . . . . . . . . . . . . 5P
ParkAssist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248, 256
Shifting Into . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Shifting Out of . . . . . . . . . . . . . . . . . . . . . . . . 228
Parking Brake and P (Park) Mechanism
Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
Extended . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229
Over Things That Burn . . . . . . . . . . . . . . . . . 229
Parking or Backing
Assistance Systems . . . . . . . . . . . . . . . . . . . . 248
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . 119
Compartment Air Filter . . . . . . . . . . . . . . . . 201
Sensing System . . . . . . . . . . . . . . . . . . . . . . . . . 70
Perchlorate Materials Requirements, California . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16504257) - 2023 - CRC - 5/9/22
Index 425
RestraintsWhere to Put . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Retained Accessory Power (RAP) . . . . . . . . . 227
Reverse Tilt Mirrors . . . . . . . . . . . . . . . . . . . . . . . 40
Roads Driving, Wet . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Roadside Assistance Program . . . . . . . . . . . . 399
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Rotation, Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
Routing, Engine Drive Belt . . . . . . . . . . . . . . . 395
Running Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Running the Vehicle While Parked . . . . . . . 230
S
Safety Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Safety Defects Reporting Canadian Government . . . . . . . . . . . . . . . . . 405
General Motors . . . . . . . . . . . . . . . . . . . . . . . . 405
U.S. Government . . . . . . . . . . . . . . . . . . . . . . . 404
Safety System Check . . . . . . . . . . . . . . . . . . . . . 64
Satellite Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Scheduling Appointments . . . . . . . . . . . . . . . . 401
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Extender . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
How to Wear Seat Belts Properly . . . . . . . 59 Seat Belts (cont'd)
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . . . . 61
Reminders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Replacing after a Crash . . . . . . . . . . . . . . . . . 65
Use During Pregnancy . . . . . . . . . . . . . . . . . . 64
Seats Adjustment, Front . . . . . . . . . . . . . . . . . . . . . . 50
Center Seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Head Restraints . . . . . . . . . . . . . . . . . . . . . . . . . 49
Heated and Ventilated, Front . . . . . . . . . . . 56
Heated, Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Lumbar Adjustment, Front . . . . . . . . . . . . . . 53
Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Power Adjustment, Front . . . . . . . . . . . . . . . . 51
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Reclining Seatbacks . . . . . . . . . . . . . . . . . . . . . 52
Underseat Storage . . . . . . . . . . . . . . . . . . . . . 101
Securing Child Restraints . . . . . . . . . . 92, 96, 99
Security Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 409
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Vehicle Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202 Accessories and Modifications . . . . . . . . . 302
Climate Control System . . . . . . . . . . . . . . . . 196
Doing Your Own Work . . . . . . . . . . . . . . . . . 303
Electric Parking Brake Light . . . . . . . . . . . . 122 Service (cont'd)
Maintenance Records . . . . . . . . . . . . . . . . . . 391
Maintenance, General Information . . . . . 384
Parts Identification . . . . . . . . . . . . . . . . . . . . . 392
Scheduling Appointments . . . . . . . . . . . . . . 401
Services Special Application . . . . . . . . . . . . . . . . . . . . . 388
Servicing System . . . . . . . . . . . . . . . . . . . . . . . . . 171
Servicing the Airbag . . . . . . . . . . . . . . . . . . . . . . .73
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .182
Shift Lock Control Function Check, Automatic Transmission . . . . . . . . . . . . . . . . 322
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Out of Park . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
Side Blind Zone Alert (SBZA) . . . . . . . . . . . . . 260
Signals, Turn and Lane-Change . . . . . . . . . . . .143
Snow Plow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 298
Software Updates . . . . . . . . . . . . . . . . . . . . . . . . .154
Special Application Services . . . . . . . . . . . . . . 388
Specifications and Capacities . . . . . . . . . . . . . 393
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Start Assist, Hill . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Start Vehicle, Remote . . . . . . . . . . . . . . . . . . . . . .22
Starting the Engine . . . . . . . . . . . . . . . . . . . . . . 225
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Column Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Fluid, Power . . . . . . . . . . . . . . . . . . . . . . . . . . . 315