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2001 Other GMC Models oil in coolant

Tiny
PATS
  • MEMBER
  • 2001 GMC
Engine problem
2001 Other GMC Models Front Wheel Drive 50,000 miles

When the Malibu was about 2yrs, the coolant light came on. I found the coolant tank empty. I toped it up and noticed a very thin sludgy film on top. Ever since, it needs topping up every 3 months and the thin oil slick is visible. I can do my own repairs, but where do I start? Is this a common Malibu problem?
Pat
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Saturday, January 19th, 2008 AT 3:28 PM

2 Replies

Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
Yes it is. The intake manifold gasket is the most common. Gm in their infinite wisdom made these out of plastic and rubber.(It didnt work) now the replacement gasket is steel and very hard rubber. This is most likely your problem. There are rare instances when the transmission cooler inside the radiator goes bad but your transmission fluid would be low. **Look with a flashlight at the front and rear of the intake, it usually leaks at both ends. **Remember feedback and votes are greatly appreciated if I have helped you.
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Saturday, January 19th, 2008 AT 4:02 PM
Tiny
PATS
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Thanks!
That's good (or not) to know depending on your point of view. I'll replace the gasket and let you know if it's a fix.
Again Thanks!
Pat
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Sunday, January 20th, 2008 AT 2:32 PM

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