1989 Chevy Truck Defroster problems

1989 CHEVROLET TRUCK
130,000 MILES • V8 • 2WD • AUTOMATIC
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VIOLETB
  • MEMBER
  • 3 POSTS
I have tried to repair my defroster and still cannot get it to work. Need some suggestions on things to try.

I have changed the motor, reset the relays, checked the fuses, changed the computer board and still no success...HELP
Oct 10, 2010 at 8:51 AM
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CARADIODOC
  • ✓Experienced Mechanic
  • 34,413 POSTS
Hi violetb. Welcome to the forum. What is the symptom? Air doesn't blow from anywhere? Air blows but won't switch to blow from defrost duct? Air blows on windshield but it's cold? Air only blows on one speed?

Do you have slide levers for temperature and function or do you have small push buttons and vacuum controls?

caradiodoc
Oct 10, 2010 at 10:27 AM
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