1987 CHEVROLET VAN
119,000 MILES
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Heater switch won't contril temp. So it stays on low. Check blower fan don't know if resistor or relay or switch. How do you tell if heayer switch is bad. I don't have money to replace parts or take to garage. Please help!!
Feb 16, 2013 at 11:26 AM
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HMAC300
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go to resistor it may be by blower and turn to different settings using a stest light probe each wire to seeif power if there is then the resistor mayb e bad as well as blower relay. relay usually controls high speed
Feb 16, 2013 at 4:50 PM