The Lemon Index$900 middle bill · most between $680 and $1,200
About the same as the $1,000 middle bill owners of all 53 models reported.
2018–2020 GMC Terrain
GMC Terrain owners reported paying a median of $900 for a brake booster replacement, with the middle half of bills between $680 and $1,200. That's from 6 owner reports (6 complaints to NHTSA). Costs vary by shop and region.
What owners paid
- Under $50017%
- $500–$1,00033%
- $1,000–$2,50033%
- $2,500–$5,0000%
- $5,000 and up17%
Share of the 6 owner reports in each price band.
By model year
- 2018 GMC Terrain2too few for a middle
- 2019 GMC Terrain3$800 middle bill
- 2020 GMC Terrain1too few for a middle
Reports per model year, with the middle bill where there are 3 or more. YouTube amounts count for the generation the video covers.
How often owners report the failure
- 2020 GMC Terrain13 complaints name it7% of that year's complaints
- 2018 GMC Terrain11 complaints name it5% of that year's complaints
- 2019 GMC Terrain8 complaints name it4% of that year's complaints
Owner complaints to NHTSA whose own words name a brake booster / hard pedal. Raw counts: popular years get more complaints. A complaint is a report, not proof of a defect.
Engines in these years
Engines with a page of their own that this model was sold with in the years above. Owners don't always say which engine they had.
Keep going
- GMC Terrain reliability by year
- Brake booster replacement cost on every car
- Car symptoms and what they can mean
Other repairs GMC Terrain owners reported
Timing chain replacement (19) · Engine replacement (13)
The details
How we count
Every number here is a repair bill an owner reported, never a shop's price list. Two sources: the bills owners wrote in their own complaints to the U.S. government (NHTSA), and the dollar amounts owners said out loud in YouTube repair and ownership videos. A figure counts for a repair when that repair is the part named nearest to it. Left out: purchase prices, payments, rentals, towing, warranties and deductibles, amounts under $50 or over $15,000, parts-only prices ("the part was $80 on Amazon"), bills for two different repairs named together, and money someone else paid. One number per complaint (or video) and repair: the biggest, so it's the bill, not the diagnosis fee.
The range is the middle half of the bills (the 25th to the 75th percentile), so one wild number can't swing it. Owners who complain to the government often had expensive repairs, so a typical bill can be lower. Costs vary by shop and region, by dealer vs independent shop, by parts and by miles. This is what owners reported, not a quote for your car.
Check the bills yourself
NHTSA complaint numbers (search them at nhtsa.gov): 11767937, 11727732, 11694577, 11685543, 11516875, 11419173.
Quick answers
How much does brake booster replacement cost on a GMC Terrain?
GMC Terrain owners reported a median of $900, and the middle half paid $680 to $1,200, from 6 owner reports. Costs vary by shop and region.
Is a GMC Terrain brake booster replacement more expensive than on other cars?
The GMC Terrain middle bill of $900 is about the same as the $1,000 owners of all 53 models we have reports for paid.
Where do these GMC Terrain repair costs come from?
From 6 complaints to NHTSA: what owners themselves said they paid. They aren't verified bills or a shop's quote.
Which GMC Terrain years report this failure most?
In complaints to NHTSA, owners of the 2020 (13), 2018 (11), 2019 (8) GMC Terrain named it most. Raw counts, not a failure rate.
Sources: NHTSA owner complaints and YouTube videos (amounts said out loud), sorted by The Lemon Index. Owner reports, not a price quote. Costs vary by shop and region.