2003 Pontiac Montana Brake Master Cylinder replacement

Tiny
XJSHEN
  • MEMBER
  • 2003 PONTIAC MONTANA
  • 3.4L
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 74,000 MILES
Dealer fixed Coolant leak by replacement of intake manifold set with $760.
Tech found fluid is very sticky said oil mixed in the brake fluid and need to be replaced for a new brake Master cylinder by quoting $500. Is the price is fair? Before I replaced Master cylinder in another GM car just paid $130. Is it possible do by myself?
Thanks for your input!
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Thursday, March 12th, 2015 AT 4:57 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 107,918 POSTS
First, how did engine oil get into the brake system? I see no way that could have happened.

As far as the cost, the flat rate calls for 2 hours labor. Then you have to pay the for the part. You can purchase one for around 75.00. Plus, there is brake fluid. So add 5 more dollars.

That leaves 420.00 in labor. Do they charge $210.00 per hour labor? If so, find a new shop.
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Friday, March 13th, 2015 AT 5:19 AM
Tiny
XJSHEN
  • MEMBER
  • 203 POSTS
I don't know. How it was happened. GM shop have a batter replacement and created code p0135n and fixed it. And inspection services since I buy a new car. Where can buy cylinder at $75?
I want to replace it at home. If I can find a tech he work at my house it is nice.
I will start the work soon.
Thanks!
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Saturday, March 14th, 2015 AT 5:42 AM
Tiny
XJSHEN
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  • 203 POSTS
Thanks for your information and help!
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Saturday, March 14th, 2015 AT 11:41 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 107,918 POSTS
Not a problem. Let me know how things go for you.
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Monday, March 16th, 2015 AT 5:11 AM

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