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Q:

blower motor only works on 4 on 2007 Chevrolet Colorado

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
it does this all the time
(2) Answers
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repl blower motor resistor,when they go bad they default to high and thats what you have. they cost approx 15.00 at the dealer and are easy to repl. its located under the glove box area
Mine did the same. I replaced only the blower control & it worked for about 2 weeks then stopped working. Had to replace the blower control & the resistor. Been about a year & still working.
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