Home
GMC
Automobile
Sierra 2500 HD 2025
GMC Sierra 2500 HD 2025 - User Manual
155 pages
Manual
Specs
Ask a question
Save Page as PDF
To Next Page
To Next Page
Loading...
2025
Sierr
a/
Sierr
a
Denali
2500
HD
/3500
HD
Sierr
a/
Sierr
a Denali
2500 HD
/3500 HD
Essential Oper
ating and
Saf
ety Inf
ormation
2025
Unit
ed
St
at
e
s
S
c
an
t
o
A
c
c
e
ss
Unit
ed
St
at
e
s
and
Canada
Cust
omer
A
ssist
ance
1-800-263-3
7
7
7
Connec
t
ed
Services
1-888-4-ONST
A
R
Customer
Assistance
1-800-462-8782
Roadside
Assistance
1-888-881-3302
•
Owner’s
Manuals
•
W
arr
anty
Inf
ormation
•
Connec
t
ed
Services
•
My
GMC
R
e
w
ards
•
m
y
GMC
Mobile
App
•
How-
T
o
Videos
•
V
ehicle
Diagnostics
•
Scheduled
Maint
enance
•
V
ehicle
F
eat
ures
•
Man
y
A
dditional
R
esources
Canada
Unit
ed
St
at
e
s
8
7855304
B
Roadside
Assistance
1-800-268-6800
Canada
C
M
Y
CM
MY
CY
CMY
K
ai1728064221105_25_GMC_Sierra_Denali2500HD_3500HD_EOSI_COV_en_US_87855304
B_2024OCT17.pdf
1
10/4/2024
1:50:28
PM
2
Table of Contents
Main Page
Table of Contents
2
Introduction
2
California Proposition 65 Warning
2
Canadian Vehicle Owners
4
Using this Manual
4
Danger, Warning, and Caution
4
Keys, Doors, and Windows
6
Keys and Locks
6
Keys
6
Door Locks
7
Doors
8
Transporting Items that Can Catch Fire
8
Vehicle Security Immobilizer Operation
8
Interior Mirrors
9
Rear Camera Mirror
9
Windows
11
Seats and Restraints
12
Head Restraints
12
Front Seats Seat Adjustment
13
Power Seat Adjustment
14
Reclining Seatbacks
14
Memory Seats
16
Heated and Ventilated Front Seats
18
Rear Seats
19
Heated Rear Seats
20
Seat Belts
20
Seat Belts
21
How to Wear Seat Belts Properly
22
Lap-Shoulder Belt
24
Seat Belt Use During Pregnancy
26
Seat Belt Extender
27
Safety System Check
27
Seat Belt Care
27
Replacing Seat Belt System Parts after a Crash
27
Airbag System
28
Where Are the Airbags
29
When Should an Airbag Inflate
30
What Makes an Airbag Inflate
31
How Does an Airbag Restrain
31
What will You See after an Airbag Inflates
32
Passenger Sensing System
33
Servicing the Airbag-Equipped Vehicle
36
Adding Equipment to the Airbag-Equipped Vehicle
36
Airbag System Check
37
Replacing Airbag System Parts after a Crash
37
Child Restraints Older Children
38
Infants and Young Children
40
Child Restraint Systems
42
Where to Put the Restraint
44
Lower Anchors and Tethers for Children (LATCH System)
45
Replacing LATCH System Parts after a Crash
55
Securing Child Restraints (with the Seat Belt in the Rear Seat)
56
Securing Child Restraints (with the Seat Belt in the Front Passenger Seat)
59
Securing Child Restraints (with the Seat Belt in the Center Front Seat)
62
Instruments and Controls
63
Windshield Wiper/Washer
63
Warning Lights, Gauges, and Indicators
64
Seat Belt Reminders
64
Airbag Readiness Light
66
Passenger Airbag Status Indicator
66
Brake System Warning Light
67
Tire Pressure Light
67
Lighting
69
Exterior Lighting
69
Exterior Lamp Controls
69
Hazard Warning Flashers
70
Driving and Operating
71
Driving Information
71
Off-Road Recovery
71
Off-Road Driving
72
Hill and Mountain Roads
75
Vehicle Load Limits
76
Certification/Tire Label
78
Maximum Weight
80
Truck-Camper Loading Information
81
Starting and Operating Shifting into Park
82
Shifting out of Park
83
Parking over Things that Burn
84
Extended Parking
84
Engine Exhaust
84
Running the Vehicle While Parked
85
Automatic Transmission
85
Manual Mode
87
Drive Systems Four-Wheel Drive
88
Speed Automatic Transmission
88
Electric Parking Brake
94
Ride Control Systems Traction Control/Electronic Stability Control
96
Advanced Driver Assistance Systems
97
Filling the Tank (Pickup Models)
99
Filling the Tank (Chassis Cab and Box Delete Models)
101
Vehicle Care
103
General Information General Information
103
California Perchlorate Materials Requirements
103
Vehicle Checks Doing Your Own Service Work
104
Engine Compartment Overview
105
Battery - North America
106
Noise Control System
107
Headlamp Aiming Front Headlamp Aiming
108
Wheels and Tires Tires
108
Tire Sidewall Labeling
109
Tire Designations
110
Tire Terminology and Definitions
111
Tire Pressure
112
Tire Pressure Monitor System
113
Tire Pressure Monitor Operation
114
Monitoring Operation
118
Tire Inspection
119
Tire Rotation
119
When It Is Time for New Tires
121
Buying New Tires
122
Different Size Tires and Wheels
123
Uniform Tire Quality Grading
123
If a Tire Goes Flat
124
Tire Changing
126
Jump Starting Jump Starting - North America
137
Towing the Vehicle Transporting a Disabled Vehicle
140
Service and Maintenance
142
Additional Maintenance and Care
143
Customer Information
145
Customer Information Online Account
145
Roadside Assistance Program
145
Reporting Safety Defects
147
Radio Frequency Statement
147
Reporting Safety Defects Reporting Safety Defects to the United States Government
147
Reporting Safety Defects to the Canadian Government
148
Reporting Safety Defects to General Motors
148
Vehicle Data Recording and Privacy
148
Cybersecurity
149
Event Data Recorders
149
Index
151
Need help?
Do you have a question about the GMC Sierra 2500 HD 2025 and is the answer not in the manual?
Ask a question
GMC Sierra 2500 HD 2025 Specifications
General
Brand
GMC
Model
Sierra 2500 HD 2025
Category
Automobile
Language
English
Related product manuals
GMC Sierra 2500 HD 2024
440 pages
GMC Sierra 2500 HD 2023
430 pages
GMC Sierra Denali 2500 HD 2024
440 pages
GMC Sierra 2500 HD2022
440 pages
GMC Sierra Denali 3500 HD 2024
440 pages
GMC Sierra Denali 3500 HD 2022
440 pages
Chevrolet Silverado 2500 HD 2022
441 pages
GMC Sierra Denali 2500HD 2014
466 pages
GMC 2009 Sierra
24 pages
GMC 2010 Sierra
660 pages
GMC 2007 Sierra
680 pages
GMC Sierra 2016
20 pages
To Next PageTo Next Page
Need help?
General
