1999 Chevy Astro heater blower

1999 CHEVROLET ASTRO
75,000 MILES • 6 CYL • AWD • AUTOMATIC
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RAYZ
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  • 1 POST
blower runs cont. ign. on or off. must dis.motor terminal to shut off. also no speed controlsfrom inside
Mar 9, 2008 at 5:54 PM
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BMRFIXIT
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  • 19,053 POSTS
I would check for after market wiring
check relay
check wiring
Mar 9, 2008 at 6:00 PM
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RASMATAZ
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  • 75,992 POSTS
Get the HVAC Control Module tested out this is where I forsee the problem. Is it the front blower only? see below


https://www.2carpros.com/forum/automotive_pictures/12900_HVAC_1.jpg

Mar 9, 2008 at 6:06 PM
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