98 RWD 5.7L Suburban AC ISSUE HELP - The 1947 - Present Chevrolet & GMC Truck Message Board Network

shultzee13 · 08-05-2018, 10:30 PM

Started off AC compressor just quit engaging going down the road and now won’t blow cold of course.

In testing the situation I jumped the compressor switch connector on the back of the compressor to the battery. Worked great - compressor clutch charted spinning.

But then..... my AC controller on the dash took a dump. Now I have no lights on either the recirc button or AC button and I can’t control we’re the air goes to.
I made a bad situation worse.

AC relay is brand new. AC Fuses in door panel and under hood are fine.

Did I blow the controller?
Is there a fuse somewhere else that works the AC controller?

I obviously need some serious help guys
I am anxiously watching my email for responses.

Hot as hell in Texas!

mr48chev · 08-06-2018, 11:22 AM

It might work better if you posted it in the section for the later trucks.

Most of us in this section that have air have aftermarket air.

MARTINSR · 08-06-2018, 02:19 PM

I looked at your thread topic and saw 98, HUH 1998? That's not an old truck, and then it hit me, I bought a very old truck, a 1948 Chevy pickup when it was only 4 years older than your 98!

Brian

08-05-2018, 10:30 PM	#1
shultzee13 Registered User Join Date: Jan 2012 Location: Tyler Texas Posts: 223	98 RWD 5.7L Suburban AC ISSUE HELP Started off AC compressor just quit engaging going down the road and now won’t blow cold of course. In testing the situation I jumped the compressor switch connector on the back of the compressor to the battery. Worked great - compressor clutch charted spinning. But then..... my AC controller on the dash took a dump. Now I have no lights on either the recirc button or AC button and I can’t control we’re the air goes to. I made a bad situation worse. AC relay is brand new. AC Fuses in door panel and under hood are fine. Did I blow the controller? Is there a fuse somewhere else that works the AC controller? I obviously need some serious help guys I am anxiously watching my email for responses. Hot as hell in Texas!

08-06-2018, 11:22 AM	#2
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,267	Re: 98 RWD 5.7L Suburban AC ISSUE HELP It might work better if you posted it in the section for the later trucks. Most of us in this section that have air have aftermarket air. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

08-06-2018, 02:19 PM	#3
MARTINSR Registered User Join Date: Dec 2000 Location: Boise, Idaho Posts: 6,001	Re: 98 RWD 5.7L Suburban AC ISSUE HELP I looked at your thread topic and saw 98, HUH 1998? That's not an old truck, and then it hit me, I bought a very old truck, a 1948 Chevy pickup when it was only 4 years older than your 98! Brian __________________ 1948 Chevy pickup Chopped, Sectioned, 1953 Corvette 235 powered. Once was even 401 Buick mid engined with the carburetor right between the seats! Bought with paper route money in 1973 when I was 15. "Fan of most anything that moves human beings"



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