2018 GMC Canyon problems
The 2018 GMC Canyon has 51 NHTSA owner complaints and no active recalls. Here's where owners say it breaks.
The 2018 GMC Canyon has 51 NHTSA owner complaints on file (U.S. federal records, as of July 2026). The most-reported system is powertrain at 24 complaints, typically surfacing around 23,587 miles (~$2,500 to repair). Source: NHTSA Office of Defects Investigation.
| Model year | Owner complaints | Recalls |
|---|---|---|
| 2015 Canyon | 300 | 0 |
| 2016 Canyon | 267 | 0 |
| 2017 Canyon | 65 | 0 |
| 2018 Canyon (this page) | 51 | 0 |
| 2019 Canyon | 16 | 0 |
| 2020 Canyon | 13 | 0 |
| 2021 Canyon | 10 | 1 |
Solid reliability overall. Common issues are concentrated in a few systems.
Buyable on the data — keep up the usual maintenance and inspect normally.
- No systemic severe-failure pattern in the complaint record
- Reliability score 8.2/10 — above the segment average
Our read of the federal NHTSA complaint and recall record for this exact year and model — not a substitute for a pre-purchase inspection. How we score.
NHTSA crash-test safety ratings 4 / 5 overall
Driver-assist features on the tested model: Electronic stability control: Standard · Forward collision warning: Optional · Lane departure warning: Optional
Source: NHTSA New Car Assessment Program — tested configuration: 2018 GMC Canyon PU/CC RWD. Stars rate crash protection in NHTSA's tests, not overall reliability — see the owner-complaint data below for what actually goes wrong.
Buying a used 2018 GMC Canyon? Check these first
Here's what this model is known to do — so you can inspect for it, price it in, or make the seller fix it before you sign.
What to inspect on this specific car
- powertrain — 24 owner reports · tends to show around 23,587 mi · ~$2,500 to fix
- electrical — 9 owner reports · tends to show around 29,500 mi · ~$850 to fix
- engine — 3 owner reports · tends to show around 74,000 mi · ~$3,100 to fix
- steering — 3 owner reports · tends to show around 4,500 mi · ~$700 to fix
Recalls to confirm are done
Run the VIN from the listing — no active recalls on this model right now, but confirm none were opened after this car was built.
Verdict for buyers: 8.2/10 model. The priciest documented failure is engine (~$3,100) — get the seller's service records for it or inspect closely. Otherwise an average-risk used buy at a fair price.
We tell you what this model is known for and what to inspect — a vehicle-history report tells you what this exact car has been through. Smart buyers get both.
See the full pre-purchase inspection checklist →Ask anything about your 2018 GMC Canyon
A noise, a warning light, a repair quote, "should I buy this?" — get an answer grounded in this vehicle's actual NHTSA record, not generic advice.
Answers use this vehicle's NHTSA complaint & recall record — owner-reported and unverified, not a diagnosis. Verify anything safety-critical with a mechanic.
Top trouble spots 4 categories with 3+ complaints
What owners are saying recent NHTSA-filed complaints · verbatim
My 2018 GMC Canyon just underwent repairs due to a crack in the head gasket. A serious issue which resulted in having to take said GMC Canyon to a mechanic before further damage to the engine could be suffered. My truck only had a measly 76,000 miles. Definitely, something GMC…
Rumbling of transmission. Clucky start. Gm dealer acknowledges the problem and has tried to repair vehicle. Gm says at this time the truck 8 speed transmissions are not fixable.
Backup lights are not working; bulbs are good. No apparent chafing/wear on wiring harness. Removed ground strap, cleaned and reattached. Still not working. 48,000 miles on 2018 GMC Canyon SLT, diesel engine.
I have been receiving the “Service Trailer Brake System” error intermittently. The only information I have been have to find around this is a defective wiring harnesses between two modules. This defect is not due to wear/tear and has been reported as a defective part on multiple…
Estimate your repair exposure
Drag to your current mileage. Numbers are derived from this vehicle's complaint history.
Common questions
Is the 2018 GMC Canyon reliable?
Mostly yes. With a reliability score of 8.2 out of 10 based on 51 owner complaints filed with NHTSA, the 2018 GMC Canyon is generally a sound vehicle. The areas to watch are listed in the top problem section above — most are budget items, not deal-breakers.
Should you avoid the 2018 GMC Canyon?
On the NHTSA data, the 2018 GMC Canyon does not need avoiding. Buyable on the data — keep up the usual maintenance and inspect normally. The record behind that call: No systemic severe-failure pattern in the complaint record; Reliability score 8.2/10 — above the segment average. This is our read of the federal complaint and recall data — not a substitute for a pre-purchase inspection.
What should I check before buying a used 2018 GMC Canyon?
Inspect the powertrain first — it's the most-reported issue on this model, with 24 owner complaints filed. Typical failure occurs around 23,587 miles. Average repair cost runs about $2,500 at an independent shop. Also confirm any open recalls have been completed by running the VIN, and ask for service records covering the problem areas listed above.
Is the 2018 GMC Canyon a good used car to buy?
It scores 8.2 out of 10 on our NHTSA-based read of 51 owner complaints. The main thing to watch is powertrain. Typical failure occurs around 23,587 miles. Priced fairly and clean on inspection, it's a reasonable used buy. Our data covers what this model is known for — pair it with a vehicle-history report on the VIN to see what that specific car has been through.
What's the most common problem on the 2018 GMC Canyon?
Based on NHTSA records, the most-reported issue is powertrain, with 24 complaints filed. Typical failure occurs around 23,587 miles. Average repair cost runs about $2,500 at an independent shop.
What's the most expensive thing that goes wrong?
The powertrain is one of the costlier repair items. Average repair cost runs about $2,500 at an independent shop. Typical failure occurs around 23,587 miles. Catching early warning signs can sometimes extend life by 20–30,000 miles.
How do I check if my GMC Canyon has open recalls?
Paste your VIN into the decoder at the top of this page. We pull live from NHTSA, so you'll see exactly which campaigns apply to your vehicle and whether the dealer has logged the fix. Recall repairs are always free regardless of mileage or warranty status.
Is an extended warranty worth it on a 2018 GMC Canyon?
Math is straightforward: a quality service contract runs $1,800–3,500 over 3 years. With 51 complaints on file and the costliest repair averaging $2,500, one major failure more than pays for it. The catch is reading the contract — many providers exclude wear items and require pre-authorization, so cheaper plans are not always better value.