2004 Pontiac Grand Prix temp/thermastat

Tiny
DOE773
  • MEMBER
  • 2004 PONTIAC GRAND PRIX
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
My issue with my grand prix is the temp is rising into the red, especially when my a/c is on and im driving on the street. I thought it was my thermastat I changed that two days ago and today it went into the red and when I cut the a/c off and the heat on it goes down. Please help I dont understand and I dont wanna damage anything by driving. By the way it doesnt do it everyday just on hotter days.
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Friday, June 18th, 2010 AT 10:17 PM

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Tiny
BLACKOP555
  • EXPERT
Is the cooling fan shroud in good shape and are both cooling fans coming on?
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Sunday, June 20th, 2010 AT 10:47 PM

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