powderextreme

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Feb 2, 2009
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Saskatoon , Sask.
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1998 coupe
So heres the details if anyone can help , 1998 c5 with 6 speed and all stock . the drivers side heater blows cold no matter how hot i turn the dial up but the passenger side blows normal or hot as it should . if i disconect the battery for a while and drain everything in the puter it blows hot on the drivers side for a while then back to cold . i pulled the fuse by mistake for the hvac and it worked for a short time as well so i figure the same thing as doing the battery thing . the fluids are all up to snuff as well . any ideas and maybe what repair manual should a person buy to help maybe . :confused:
 

Manny@Dasilva

Corvette Specialist
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Feb 5, 2009
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Cambridge
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1998 C5 / 2015 Z06
So heres the details if anyone can help , 1998 c5 with 6 speed and all stock . the drivers side heater blows cold no matter how hot i turn the dial up but the passenger side blows normal or hot as it should . if i disconect the battery for a while and drain everything in the puter it blows hot on the drivers side for a while then back to cold . i pulled the fuse by mistake for the hvac and it worked for a short time as well so i figure the same thing as doing the battery thing . the fluids are all up to snuff as well . any ideas and maybe what repair manual should a person buy to help maybe . :confused:

Its the control unit its self that has to be replaced .
Another common problem , that has been around for awhile .
Mine was replaced 3 time's under warranty .
 

CCO

Old Timer
Aug 5, 2011
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Cambridge ON
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2006 vert, 1994 vert
LOL, I'll say common: mine was replaced to deliver it to me brand new.
 

Manny@Dasilva

Corvette Specialist
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Feb 5, 2009
3,183
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Cambridge
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1998 C5 / 2015 Z06
so then should a person go for the ones they have rebuilt on ebay or where like corvete central type of place . i have the type that the soder lets loose on the back as i had that job fixed 3 years ago as well.

There are new ones out there that are better than the repaired ones . If you can't find one , then a refurb will do the job .
 

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