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Oil leak my 2001 yukon denali is leaking oil it seems to be leaking from the passenger side undercariage and i can smell it through the heat vents when the heat is blowing why is this

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  • steedin poole Oct 31, 2012

    it only leaks when parked, it leaks alot when parked on a hill

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  • GMC Master
  • 2,620 Answers

Are you sure its oil or is it anti-freeze.If its anti-freeze you will have a sweet smell come thru the heater when its turn on.

Posted on Nov 01, 2012

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Posted on Jan 02, 2017

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SOURCE: oil leak on manifold passenger side - v6 4motion

Get a can of Gunk and clean the engine according to the directions there (please do read them), with attention to the area around where the oil leak is.  Once you get the motor squeaky clean, you will be able to trace back to where the oil is coming from.  It may be running down the underside of a hose so you will need to look carefully.  You can do all this in the driveway.  You will probably have to let the engine get to operating temp before it will start leaking. 

Posted on Nov 01, 2008

SOURCE: 2001 buick lesabre-ac problems

  • Assumed your AC unit is OK, but uneven temperature distribution. Try to throw the heater on an off severtime. A sticky valve on the heater would cause similar problem.
  • Observe the RPM while parking your car. While the AC cut in cut out (or turn on an off). If it cause no load on the engine. The freon may be low or the compressor is bad. In this case only the intake side of the evaporator is cooler than the other side.

Posted on Jun 04, 2009

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SOURCE: 2001 Aurora..AC on driver side 2 vents is working

needs a new temp blend door actuator( dealer only part)

Posted on Jul 17, 2009

  • 105 Answers

SOURCE: AC blowing cold trough the 2 drivers vents & hot trough passenger

sometimes this will work depending upon the severity of the problem. also the 2 vents that are not working is because somewhere in that network of ventilation duct hoses is some blockage and it is a nightmare to fix this because you have to remove the entire dash and face plates etc.........

Posted on Jul 26, 2009

  • 1 Answer

SOURCE: cant locate power steering leak

I have the same problem. The high pressure line coming off the bottom of the power steering pump was leaking where the steal line goes into the rubber line. The fluid was running down the hose between the plastic cover on the hose and coming out on the bottom passenger side. This hose is a huge pain to change have to lower the sub frame to get it off the rack. And the hose is expensive.

Good Luck hope this helps

Posted on Sep 17, 2009

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