Complaint volume
80 consumer-submitted complaints are matched to this model year. Treat the count as a research signal, then read the actual summaries for repeated symptoms.
Complaint records
2025 GMC Sierra Complaints
80 consumer-submitted complaints on record for the 2025 GMC Sierra, grouped by component category.
80 Total complaints
3 Crash reports
0 Fire reports
0 Injury reports
Complaint data reflects consumer-submitted reports. A complaint is not proof
of a defect, recall, or manufacturer fault. Enriched severity fields come
from official bulk records when the complaint can be matched by ODI number.
Buyer interpretation
How to use these complaints before buying
Complaint records are most useful when they turn into inspection points, seller questions, and comparison checks against nearby model years.
Pattern to inspect
The most common categories are engine, power train, electrical system. Use those categories as a test-drive checklist instead of judging the vehicle from the total count alone.
Severity flags
Enriched records include 3 crash reports, 0 fire reports, 0 injury reports, and 0 fatality reports. These fields come from complaint records and should be read in context.
Mileage clue
Mileage is available on 11 complaints, with an average reported failure mileage of 18,820 miles. Compare that with the mileage on the listing.
Questions to ask the seller
- Have you had any problems related to engine, power train, electrical system?
- Can I see recent maintenance and repair records?
- Has the vehicle ever been towed, involved in a crash, or repaired for the same issue twice?
- Can we also check the recall record for this 2025 GMC Sierra?
Used-car checklist
Use these complaints before the test drive.
Build a buyer checklist to turn these issues into questions and inspection points.
2025 GMC Sierra
Build buyer checklist Compare with other years Sends year, make, and model to pre-fill your checklist.
How severe are the 2025 GMC Sierra complaints?
3 Crash
0 Fire
0 Injury
0 Fatality
4 Towed
1 Medical attention
What are the most common 2025 GMC Sierra complaint categories?
ENGINE 19
POWER TRAIN 7
ELECTRICAL SYSTEM 5
UNKNOWN OR OTHER 5
POWER TRAIN,ENGINE 3
ELECTRICAL SYSTEM,BACK OVER PREVENTION,FORWARD COLLISION AVOIDANCE 2
ENGINE AND ENGINE COOLING 2
ENGINE,FUEL/PROPULSION SYSTEM 2
FORWARD COLLISION AVOIDANCE 2
POWER TRAIN,ELECTRICAL SYSTEM,FUEL/PROPULSION SYSTEM 2
80 total complaints on record
Latest complaints
| Date | Component | Summary | Severity | Mileage |
|---|---|---|---|---|
| Mar 2025 | ENGINE | Purchased the vehicle 300 miles away. Flew out, picked up the truck and drove it home. Got back Saturday night. Woke up Sunday morning to review the features, etc. Noticed a major oil leak. Called the dealership I purchased it from. They told me to take it to a (local) dealership. I took it to my local dealership. They looked at the vehicle. Initially they thought it was a faulty valve cover gasket. They ordered the parts. When they actually started taking the vehicle apart, the issue was not the valve gasket but the crack in the valve cover itself. They replaced the valve cover. It went to the dealer on date 03/03/2025 and they gave he vehicle back to me on 03/21/2025. They said this crack had to of happened on the production line but before it got delivered to the initial dealership. | Crash: No Fire: No | Unknown |
| Feb 2025 | POWER TRAIN | Transmission is shifting rough | Crash: No Fire: No | Unknown |
| Jan 2025 | SUSPENSION | I purchased a 2025 GMC Siera Denali Ultimate in December 2024. Approximately 2 weeks after purchasing the vehicle, I was driving down the road I received a message that said, "Service Suspension". I was able to call OnStar for diagnostic and the truck was throwing code C2A0A. I took the truck into the dealership to see what the issue was. The dealership said that I apparently ran something over and it must have flown up and broke a plastic sensor cover on the lower rear left shock. I never hit anything but have no way to prove. So, I had to pay $526 for a new shock. Even if I did run over something if that area of the shock is that sensitive it should be better protected especially if it's not covered under warranty. | Crash: No Fire: No | Unknown |
| Jan 2025 | STEERING,POWER TRAIN,ENGINE | While on the freeway at 65mph the truck experience a hard gear shift, loss of acceleration, went into shut down, lost steering assist, and brakes became hard, lights came on the dash for transmission issue massage, as well as Check engine light. Safety became a major concern with loss of power in the mids of a flow off traffic at freeway speeds. Vehicle had to be towed. | Crash: No Fire: No | Unknown |
| Jan 2025 | EXTERIOR LIGHTING,BACK OVER PREVENTION | Just purchased a new 2025 GMC Sierra. The backup camera system is useless at night if not in a well lit parking lot. This make the system unsafe as you cannot detect people or objects in the field of view. I've had many GMC vehicles over the years and this is the first one with this concern. | Crash: No Fire: No | Unknown |