pretty bad
Typical Repair Cost:
Average Mileage:
158,100 miles
Total Complaints:
6 complaints

Most Common Solutions:

  1. replaced all brake lines (5 reports)
  2. recall brake lines (1 reports)
2004 GMC Yukon brakes problems

brakes problem

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2004 GMC Yukon Owner Comments

problem #6

Sep 112019

Yukon SLT 5.3L V8

  • Automatic transmission
  • 145,000 miles


Brake line failed on driver's side near the firewall. A partial repair was made in January 2019. Two brake lines failed 9/2019 in front of ABS pump. A repair shop is in the process of replacing all of the lines. New AC Delco lines are plastic-covered suggesting that GMC is aware of the problem. Failures are concentrated where the brake lines are clipped to the frame.

- Michael M., Bradenton, US

problem #5

Oct 032018

(reported on)

Yukon SLT 5.3L

  • Automatic transmission
  • 255,000 miles

I was sitting at a stop sign waiting for my turn to go when the brake pedal sank to the floor. The vehicle started to roll on its own into the intersection. Thankfully no one was in the way. I tried to “patch” the leak by only replacing the spot where it was leaking but that quickly grew to the point where it was far easier to replace the entire lines. I now have to replace the entire brake line system from the front to the rear. All of the lines were severely corroded and crumble in your hands. This is no easy task either especially considering how hard it is to get to the lines. This should be a major safety recall on GMs part. There is no way to know when these lines give way and when they do give it is catastrophic. I agree that GM should have used better parts to begin with and it wouldn’t be an issue now. I have had numerous Chevy and GMC trucks and cars and they still have their original brake lines but this particular production series of trucks shows a serious safety issue that should be addressed immediately.

- John B., New Baden, IL, US

problem #4

Mar 062018

Yukon XL 5.3L

  • Automatic transmission
  • 211,000 miles

Want to thank GMC for their negligence of knowingly putting brake lines that cannot stand up to the rigors of daily usage. Brake lines that rust easily, are not stainless steel, cheap way out on their part. 3/7/18, brake pedal went to the floor because of this, causing me to go right through a red light. Luckily I though quickly to honk my horn like crazy and swerve the vehicle back and forth to let other drivers think I was "insane', and to stay clear of me. Could have been a bad accident.

- Dave K., Whitehouse Station, US

problem #3

May 292017

Yukon SLT 5.3L

  • Automatic transmission
  • 121,000 miles


There is zero rust on the bottom of this vehicle. My wife washes it with under body flush once a week. The only thing rusted is the brake lines on both sides. Extremely disappointed as I see there are 1439 listed complaints that are similar to mine.

- Tim R., Suamico, WI, US

problem #2

Jul 082015

Yukon SLT 5.3L

  • Automatic transmission
  • 90,000 miles

How can an suv that's 11 yrs old have rusted out brake lines? I was ready to pull a camper last week-end, when the pedal went to the floor while I was at Wal-Mart. Looked underneath and brake fluid was running off the frame to the ground. My opinion is the brakes are the most important thing in the suv. Luckily it is raining every day so we canceled taking the camper out last week. The brake line is a defect in GMC builders. Now I'm waiting for 2 weeks without a car because of rusted out brake lines???

Its time to buy Japanese cars, they last longer.

- aungst, New Kensington, PA, US

problem #1

Mar 022013


  • Automatic transmission
  • 126,400 miles

Apparently this is a common problem with GMC trucks. All new brake line parts cost $300-500 & full replacement total cost can be around $2000. Dangerous and expensive - GMC should be forced to fix this problem.

- Cassandra B., Hayward, CA, US

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