2004 Chevy Monte Carlo cold air

2004 CHEVROLET MONTE CARLO
90,000 MILES • 6 CYL • 2WD • AUTOMATIC
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LARRY WOOD
  • MEMBER
  • 1 POST
with the heater on and the fan on high it blows cold air. the engine temp. is agout 180' the lower heater hose is hot and the uper hose is cool. is there a switch. or valve not opening?
Dec 10, 2009 at 11:25 AM
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BLACKOP555
  • ✓Experienced Mechanic
  • 10,386 POSTS
works decent untill high is turned on? does temp go up if you let the fan stay off then turn it on or stays same temp until you turn on high?

are you talking bout the lower and upper radiator hose or the lower and upper heater core hoses.
Dec 11, 2009 at 8:13 AM
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