CarModelProblems.com

2020 GMC Terrain Problems & Recalls

Built from official NHTSA complaint and recall data · data through 07/14/2026

High complaint levelIts most-reported problem — Service Brakes — runs 4.8× the fleet median for that category across the 2075 model-years tracked on this site.
181Complaints
2Recalls
7Crashes
1Fires
5Injured
0Deaths

Source: U.S. NHTSA complaint & recall data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.

Is this problem acknowledged?

The most-reported problem — Service Brakes (32% of complaints) — has no NHTSA recall or open investigation on file.

Service Brakes complaints here are 4.8× the median for that category across the 2075 model-years tracked on this site.

1 of the 6 most-reported categories on this page are backed by a recall or open investigation; the other 5 rest on owner reports alone.

Complaint categoryReportsOfficial statusReference
Service Brakes58 · 32%No official action
Engine54 · 29.8%No official action
Electrical System25 · 13.8%No official action
Power Train24 · 13.3%RecalledRecall 20V668000
Fuel/propulsion System21 · 11.6%No official action
Vehicle Speed Control11 · 6.1%No official action

Recalled = an NHTSA safety recall covers this category, so a free repair exists. Under investigation = NHTSA has an open probe but no recall yet. Investigation closed = NHTSA examined it and closed the probe — this is not a defect finding; where a closed probe led to a recall we name the campaign. Not available = recall or investigation data could not be confirmed for this vehicle — it is not a “no”. Categories are matched by NHTSA's top-level component. Check your VIN at nhtsa.gov/recalls.

Complaints by component

ENGINE54 · 29.8%
Unspecified / other31 · 17.1%
POWER TRAIN24 · 13.3%
FUEL/PROPULSION SYSTEM21 · 11.6%
VEHICLE SPEED CONTROL11 · 6.1%
SERVICE BRAKES, HYDRAULIC6 · 3.3%
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING5 · 2.8%
FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP4 · 2.2%

Percentages are the share of the 181 complaints citing each component; one complaint can cite several components. “Unspecified / other” is NHTSA’s own catch-all category — we show it rather than hide it.

Recalls — 2 campaigns

Power Train:automatic Transmission

NHTSA campaign 20V668000 · 2020 · reported 10/29/2020

Missing bolts on the start-stop accumulator endcap could result in a transmission oil leak and may progress to a loss of propulsion, increasing the risk of a crash. A transmission fluid leak in the presence of an ignition source may increase the risk of fire. Recall repairs are free at authorized dealers.

PARK-IT: NO  · PARK-OUTSIDE: NO  ·  OVER-THE-AIR FIX: NO

Child Seat:vehicle Latch Anchor

NHTSA campaign 23V339000 · 2023 · reported 05/11/2023

The inability to install a child seat with the LATCH anchorage bars could result in an unsecured child seat, increasing the risk of injury in a crash. Recall repairs are free at authorized dealers.

PARK-IT: NO  · PARK-OUTSIDE: NO  ·  OVER-THE-AIR FIX: NO

Park it Park outside Specimen badges — shown on a recall card only when NHTSA sets the flag. None of the campaigns above carries either flag. Always check your own vehicle by VIN at nhtsa.gov/recalls.

What owners report

“My Terrain has a light that has been coming on for a couple months. Service Brake Assist. I took it to the dealer after my…”NHTSA complaint 11628017 — filed 11/30/2024 · SERVICE BRAKES
“While driving reduce engine power light came on and the brakes gave out. I weigh 250 lbs and took all my strength to get brakes…”NHTSA complaint 11611870 — filed 08/30/2024 · SERVICE BRAKES
“While driving I had to push the brake to the floor and a light came on saying reduced engine power. I pulled over right away…”NHTSA complaint 11610272 — filed 08/22/2024 · SERVICE BRAKES

Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.

Complaint trend by year filed

12019192020212021252022522023382024872025412026

Frequently asked questions

What are the most common problems with the 2020 GMC Terrain?

Service brakes issues are the most-reported category, cited in 58 of 181 NHTSA complaints (32%), followed by engine (54), unspecified/other issues (31), electrical system (25). Complaints are unverified owner reports.

How many complaints does the 2020 GMC Terrain have?

181 complaints were on file with NHTSA as of 07/14/2026. Of those, 7 involved a crash, 1 involved a fire, and 5 reported injuries. No deaths were reported.

Does the 2020 GMC Terrain have any recalls?

Yes — 2 NHTSA safety recall campaigns, including campaign 20V668000. Recall repairs are free at authorized dealers. Check your specific vehicle by VIN at nhtsa.gov/recalls.

Has NHTSA acted on the 2020 GMC Terrain's reported problems?

1 of the 6 most-reported complaint categories on this page is backed by an NHTSA safety recall or open investigation; the rest are unverified owner reports. A recall means a free repair is available at authorized dealers.

Is a complaint proof of a defect?

No. Complaints are reports submitted by consumers to NHTSA. NHTSA does not verify individual complaints, and a complaint is not proof that a defect exists.

About this data — Complaint figures on this page are consumer reports submitted to the National Highway Traffic Safety Administration (NHTSA), a U.S. government agency. NHTSA does not verify individual complaints; a complaint is not proof that a defect exists, and counts reflect what owners chose to report, not confirmed failure rates. Recall information comes from official NHTSA safety recall campaigns; recall repairs are free at authorized dealers. Always check your specific vehicle by VIN at nhtsa.gov/recalls. CarModelProblems.com is an independent site and is not affiliated with NHTSA or any vehicle manufacturer. Data through 07/14/2026.