01 silverado 4x4

My heater is on even though the control calls for air . Is there a usually broken item for this, A rheostat or module and where is it located? Truck has 110,000 miles on it TIA for your help

Reply to
Larry and a Cat named Dub
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Could be either the Blend door or the water valve.

Cheers

"Larry and a Cat named Dub" wrote in message news:7vsNl.16377$ snipped-for-privacy@flpi149.ffdc.sbc.com...

Reply to
Martin Riddle

My 2000 has had 2 blend door actuators so far.

Reply to
genius

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