The Lemon Index$678 middle bill · most between $614 and $775
Lower than the $1,000 middle bill owners of all 53 models reported.
Owners who gave their mileage: a middle of 45,000 miles (5 reports).
GMC Sierra owners reported paying a median of $678 for a brake booster replacement, with the middle half of bills between $614 and $775. That's from 6 owner reports (6 complaints to NHTSA). Costs vary by shop and region.
What owners paid
- Under $50017%
- $500–$1,00067%
- $1,000–$2,50017%
- $2,500–$5,0000%
- $5,000 and up0%
Share of the 6 owner reports in each price band.
By model year
- 2014 GMC Sierra1too few for a middle
- 2015 GMC Sierra2too few for a middle
- 2016 GMC Sierra2too few for a middle
- 2017 GMC Sierra1too 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
- 2015 GMC Sierra28 complaints name it3% 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
5.3 V8 (L83 / L84) · 6.2 V8 (L86 / L87)
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 Sierra reliability by year
- Brake booster replacement cost on every car
- Car symptoms and what they can mean
Other repairs GMC Sierra owners reported
Brake repair (94) · Engine replacement (33) · Transmission replacement (22) · Lifter replacement (21) · Wheel bearing replacement (13) · Fuel injector replacement (11) · AC condenser replacement (7) · Fuel pump replacement (7)
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): 11613141, 11193924, 11191062, 11186319, 11173036, 11154228.
Quick answers
How much does brake booster replacement cost on a GMC Sierra?
GMC Sierra owners reported a median of $678, and the middle half paid $614 to $775, from 6 owner reports. Costs vary by shop and region.
Is a GMC Sierra brake booster replacement more expensive than on other cars?
The GMC Sierra middle bill of $678 is lower than the $1,000 owners of all 53 models we have reports for paid.
Where do these GMC Sierra 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 Sierra years report this failure most?
In complaints to NHTSA, owners of the 2015 (28) GMC Sierra 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.