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Juan Crespo
Juan Crespo, ASE Certified Technician
Category: Cadillac
Satisfied Customers: 1513
Experience:  A.S.E. Master Technician, Advanced Level, Emissions - Asian, Domestic, & European
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Cadillac Fleetwood Brougham(RWD): One 95 Buick same as my fleetwood

Customer Question

One 95 Buick same as my fleetwood and I get 02-126 code serial data communication error or shorted to ground. So now what do I do. Ac compressor works fine but fan wont work at all in any position. I get what the code means but what do I replace?
Submitted: 1 year ago.
Category: Cadillac
Expert:  Juan Crespo replied 1 year ago.
Hi there. Welcome to our site. No blower motor function together with code 26 usually mean a bad control head.To confirm, make sure the 30A blower fuse is OK and has voltage; also check that the grounds at base of both Left and Right "A" pillars are clean and tight. If all that checks out OK, and still the blower won't work, try another HVAC control head unit. Kindly accept and rate my answer now if you think the information I've provided has helped you solve your issue. Otherwise, please reply. Best Regards.