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You are watching: 1990 chevy 1500 climate control not working

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Ok everyone new here and new to automobile forums so below we go. Currently working ~ above restoring/modernizing my "90 k15 and when I gained it had actually to rewire a the majority of things inside the dash area to get somethings consisting of heater to work properly. Currently I acquired my blower to work-related via my manage module and also put out heat without leaking after additionally putting in a heater core. Brand-new problem is hardly any air is coming the end the vents, and also when I press my defroster switch the digital display starts to speed the defroster symbol and also the temperature display and also the air control display. No idea what is wrong require some pointers wherein to look and get me part air punch so when I re-do my AC the will job-related properly as well. Many thanks in advanced
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Greg2001 Silverado 2500HD xcab lengthy bed 8.1/Allison 1000"The just thing crucial for evil to triumph is for great men to execute nothing."
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Thi is that only starts to flash when defroster is selected I have a video
Is the the original regulate panel for the 1990? ns wasn"t positive yet I assumed 88 - 91 didn"t have the "RECIRC" button but maybe just the 88 - 89 didn"t? This will make a difference since you"ll have a High press shutoff switch on the earlier of the compressor and also the Cycling move on the short side. The older people didn"t have actually the HP switch. As far as your panel lamp flashing when transforming on the defroster, I"d imply disconnecting the blend door motor and see if it stops flashing. That motor might be drawing down the voltage come the allude the lamp don"t get enough power to stay on. The motor could be out of place (trying to move against a dead stop), shorted, or have a weak ground.
That was the one that came out of my 91 the I used to drive yet is now a components truck, yet problem is when I pick defroster the blows waiting for possibly a minute yet then as soon as the flashing begins it quits.
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