Question about 1997 GMC Safari

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Rear heat or rear air conditoner not workin in my 1997 gmc safari

The rear heat and rear AC will blow out but it will not work .....

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  • Anonymous Mar 21, 2014

    fan doesn't blow at all

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Two different problems !

Rear heater problem: find under the hood where is hose for cooling liquid goes to front heating core!
you will see there also vacuum tubesgoing in to little valve ! disconnect the vaccum tubes ( engine off)
and spray in wd 40 in to the vlave ... valve is stuck and wont open flow to rear heater !

you do not have to replace tha thing . its very well made and because you dont turn this often in summer
it gets stuck. i had same problem. also make sure vacuum is working - Engine running turn rear heater on - vacuum sucks to open valve. and before that make sure fuse is ok .

for rear AC mine does not work either and it is leak on pipes that go from front to rear .. 10 feet of pipes and tubing $$ expensive repair ... forget it ... open the window...

jebadiah

Posted on Mar 01, 2009

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Posted on Jan 02, 2017

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