Question about 1999 Chevrolet Silverado 1500
I converted from the old freon to the new, changing fittings and having mechanic **** out the old stuff, then added the new stuff. My readout started flashing "A/C", so I took it to my mechanic. He said it was the digital controller, a notorious problem on those early digitally-controlled heater/AC's. He said a remanufactured controller is $550, and a brand new one is $700-some! Whoa! The defroster also blows like it has emphysema with the fan on high.
You could try goin to a local junkyard or calling one to see if they have a used one,might be cheaper that way,also your fan might be blowing like it has emphysema because the cabin air filter is most likely plugged,its behind the glove box and pretty simple to replace,hope this helps
Posted on Sep 28, 2009
Testimonial: "i've tried junkyards, there aren't many of those controllers available, but it's sound advice for sure! I'll replace the cabin air filter, thanks gog"
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Posted on Jan 02, 2017
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As far as I know you only have to change the compressor and dryer-filter to comply with 134a. Other components from old Freon 12 are safe to use for 134a. There's an Urban (mechanics) legend that you can use a 134a to an r12 system, but you can't use an r12 to a newer 134a system. But be on the safe side, change the compressor and dryer to use 134a or ask an expert on refrigeration.
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