Question about 2003 GMC Sierra 1500
1-4 speed are the blower motor resister . It controls all 1-4 speeds, also it's under the passanger side dash around fan, the 5th speed runs off a fuse the is located in the fuse box. It's one of those square fuses , not the relays but fuses. The resister will run $15 and fuse $5 . Good luck. I have replace these before
Posted on Jan 08, 2011
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Posted on Jan 02, 2017
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