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2014–2026 GMC Sierra FAQ
Why do my headlights turn on during daylight?
2024–2026
The automatic headlight system may detect low light in a parking garage, tunnel, or heavy overcast weather and turn on the headlights; this is normal.
Page 148 in the 2026 manual →When should I replace the passenger compartment air filter?
2024–2026
Replace the passenger compartment air filter as part of routine scheduled maintenance.
Page 197 in the 2026 manual →How do I unlock the vehicle without pressing the remote key button?
2024–2026
If equipped with Keyless Access, keep the remote key within 1 m (3 ft) and press the lock/unlock button on a passenger door handle to unlock all doors.
At the driver door, the first press unlocks the driver door, and a second press within five seconds unlocks the passenger doors and tailgate.
Page 17 in the 2026 manual →What should I do if the transmission hot message appears?
2024–2026
This alert indicates excessive heat in the automatic transmission fluid; continuing to drive can damage the vehicle.
Stop, leave the engine idling, and let the fluid cool; once sufficiently cool, the message disappears.
Page 226 in the 2026 manual →2021–2022
If a transmission hot message appears, stop and idle the engine to cool the automatic transmission fluid because driving can damage the vehicle; the message clears after cooling.
Page 233 in the 2022 manual →What should I do if the brake system warning light comes on while driving?
2021–2022
Pull off the road and stop carefully; with electric brake boost, speed may be limited, the pedal may feel harder or lower, and stopping may take longer.
Because braking may not work properly and driving with this light on can cause a crash, have the vehicle towed if the light remains on.
Page 122 in the 2022 manual →Can the wrong fuel cap turn on the check engine light?
2021–2022
Yes. Obtain the proper fuel cap from your dealer; an incorrect one may activate the malfunction indicator lamp and damage the fuel and emissions systems.
Page 309 in the 2022 manual →2014–2017
If TIGHTEN GAS CAP appears with the check engine light, reinstall the fuel cap fully.
A few driving trips with the cap properly installed should turn the light and message off.
Page 148 in the 2017 manual →How do the automatic headlamps work?
2014–2022
With the exterior lamp control in AUTO, the headlamps come on when it is dark enough; do not cover the light sensor.
Page 148 in the 2022 manual →How do I switch between low and high beams?
2021–2022
Push the turn signal lever toward the instrument panel for high beams; pull or push it to return to low beams.
Page 148 in the 2022 manual →How do I check the brake fluid level?
2014–2017
Look at the brake fluid reservoir; the level should be above MIN, and a lower level requires checking the brake hydraulic system for a leak.
Page 367 in the 2017 manual →What does “Replace Battery in Remote Key” mean?
2014–2017
The message means the Remote Keyless Entry transmitter battery is low and needs to be replaced.
Page 149 in the 2017 manual →How do I switch between low- and high-beam headlights?
2014–2017
Push the turn signal lever toward the instrument panel for high beams; pull and release it to return to low beams.
Page 169 in the 2017 manual →When should I change the engine oil?
2014–2017
Change the engine oil as soon as possible when the remaining oil life is low and CHANGE ENGINE OIL SOON appears.
Page 144 in the 2017 manual →What does the StabiliTrak OFF warning light mean?
2014–2017
The light means StabiliTrak is off, so Traction Control is also off and the system cannot assist with vehicle control; turn both systems on.
Page 138 in the 2017 manual →What should I do if the ABS warning light comes on while driving?
2014–2017
Stop as soon as safely possible, turn off the vehicle, and restart the engine; if the ABS light remains or returns, service is needed.
If the ABS light is the only light on, regular brakes work, but the antilock brakes are not functioning.
Page 136 in the 2017 manual →GMC Sierra complaints to NHTSA
Complaints that owners filed with NHTSA for each model year. They are unverified reports and are not adjusted for how many vehicles were sold.
| Year | Complaints | Crashes / fires / injuries | Most reported areas |
|---|---|---|---|
| 2026 | 0 | 0 / 0 / 0 | None reported |
| 2025 | 0 | 0 / 0 / 0 | None reported |
| 2024 | 525 | 7 / 3 / 10 | Engine (205), Power train (111), Electrical system (90) |
| 2022 | 662 | 14 / 7 / 11 | Engine (244), Power train (119), Structure (110) |
| 2021 | 646 | 9 / 7 / 4 | Engine (317), Power train (157), Electrical system (84) |
| 2017 | 479 | 23 / 7 / 9 | Power train (153), Service brakes (140), Engine (72) |
| 2016 | 0 | 0 / 0 / 0 | None reported |
| 2015 | 0 | 0 / 0 / 0 | None reported |
| 2014 | 0 | 0 / 0 / 0 | None reported |
| 2013 | 0 | 0 / 0 / 0 | None reported |
| 2012 | 0 | 0 / 0 / 0 | None reported |
| 2011 | 0 | 0 / 0 / 0 | None reported |
| 2010 | 0 | 0 / 0 / 0 | None reported |
| 2009 | 0 | 0 / 0 / 0 | None reported |
| 2008 | 471 | 16 / 5 / 20 | Air bags (279), Electrical system (49), Unknown or other (49) |
| 2007 | 343 | 15 / 6 / 18 | Air bags (160), Service brakes (51), Electrical system (32) |
| 2006 | 280 | 17 / 12 / 7 | Service brakes (128), Hydraulic (39), Electrical system (31) |
| 2005 | 448 | 11 / 19 / 13 | Service brakes (142), Electrical system (137), Steering (52) |
| 2004 | 582 | 24 / 13 / 27 | Service brakes (215), Electrical system (176), Hydraulic (79) |
| 2003 | 573 | 29 / 10 / 19 | Service brakes (269), Hydraulic (134), Electrical system (115) |
| 2002 | 595 | 54 / 4 / 24 | Service brakes (347), Hydraulic (200), Power train (37) |
| 2001 | 588 | 56 / 4 / 22 | Service brakes (320), Hydraulic (217), Engine and engine cooling (53) |
| 2000 | 708 | 60 / 5 / 36 | Service brakes (387), Hydraulic (293), Structure (51) |
| 1999 | 600 | 51 / 2 / 31 | Service brakes (330), Hydraulic (280), Vehicle speed control (39) |
| 1998 | 292 | 27 / 12 / 17 | Service brakes (96), Hydraulic (86), Visibility (46) |
| 1995 | 287 | 21 / 1 / 18 | Visibility (144), Service brakes (42), Hydraulic (41) |
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All GMC Sierra manuals
| Year | Generation | Pages | File |
|---|---|---|---|
| 2026 | 2024–2026 | 436 pages | 19.0 MB |
| 2025 | 2024–2026 | 472 pages | 35.0 MB |
| 2024 | 2024–2026 | 479 pages | 16.2 MB |
| 2022 | 2021–2022 | 474 pages | 15.8 MB |
| 2021 | 2021–2022 | 461 pages | 10.4 MB |
| 2017 | 2014–2017 | 494 pages | 8.3 MB |
| 2016 | 2014–2017 | 507 pages | 8.3 MB |
| 2015 | 2014–2017 | 539 pages | 7.1 MB |
| 2014 | 2014–2017 | 542 pages | 5.3 MB |
| 2013 | 2011–2013 | 534 pages | 6.5 MB |
| 2012 | 2011–2013 | 556 pages | 6.5 MB |
| 2011 | 2011–2013 | 594 pages | 6.5 MB |
| 2010 | 2010 | 658 pages | 3.5 MB |
| 2009 | 2009 | 602 pages | 2.7 MB |
| 2008 | 2008 | 478 pages | 5.4 MB |
| 2007 | 2007 | 674 pages | 3.0 MB |
| 2006 | 2006 | 600 pages | 2.8 MB |
| 2005 | 2004–2005 | 574 pages | 2.9 MB |
| 2004 | 2004–2005 | 588 pages | 3.2 MB |
| 2003 | 2003 | 556 pages | 28.2 MB |
| 2002 | 2001–2002 | 499 pages | 2.8 MB |
| 2001 | 2001–2002 | 468 pages | 2.9 MB |
| 2000 | 1998–2000 | 421 pages | 2.6 MB |
| 1999 | 1998–2000 | 440 pages | 2.6 MB |
| 1998 | 1998–2000 | 452 pages | 24.1 MB |
| 1995 | 1995 | 488 pages | 26.5 MB |
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