HVAC wiring harness swap?

2004 CHEVROLET 1500
150 MILES • 4WD • AUTOMATIC • ELECTRIC
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CLINTKBAKER
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I swapped a wiring harness out of my 1500 Silverado WT from a donor 1500 LT. swapped the harness, BCM, steering column, radio and climate control module. Everything worked great except the radio ( not an issue though) and the AC. Had the change the blower motor module from the Manuel blower resistor due to having auto control module. Still doesn’t work. Well when driving I feel cold air coming out but can’t get blower motor to work. I did a hot test on it and it works. Let me know if there is something I left out.
Jun 6, 2026 at 7:50 PM
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CLINTKBAKER
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My truck is a 2004 and donor was a 2003
Jun 6, 2026 at 7:56 PM
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