No heat, no defrost, no air...NOTHING! - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 02-18-2004, 03:36 AM   #1
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Default No heat, no defrost, no air...NOTHING!

I pulled out of my garage leaving for work with the ECC at 90F like usual when suddenly it just stopped blowing air. Uhhh, ok. So I click it off, then back on. I watched the little graphic of the fan speed automatically increase, but no hot air. No noise of any air blowing at all. But if I listen very closely I can hear what sounds like the vents changing position when I change from defrost to floor heat (and vice-versa). Did my blower fail? If so where do I start. I have 0 experience with car heating/AC systems.
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Old 02-18-2004, 03:39 AM   #2
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No air flow, or air flow with no heat?

If no flow, start checking fuses everywhere and see if you blew one. I don't remember which one controls the power to the fans.

If all the fuses are good, you gotta check for 12V at the fan assembly. You need a gearhead here, bud. AC and ECC are out of my league, too.
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Old 02-18-2004, 03:41 AM   #3
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No air flow whatsoever. Only rear defrost works.

Which fuse box should I start checking?
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Old 02-18-2004, 03:42 AM   #4
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Crap. I don't remember. Just check all of them in the main panel, passenger hushpanel, and maxifuse center. Or search here. Fuddy and/or Andy have posted fuse locations in the past.
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Old 02-18-2004, 03:44 PM   #5
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I checked my Chilton'* and it says there is a blower relay under the hood. I'll check that if I have the time. But I did look at the driver side kickpanel fuse box and can't find anything that would seem like ECC. What is STS though?

Arg, gearheads get in here! It'* still below freezing and I need HEAT!
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Old 02-18-2004, 11:56 PM   #6
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Whee, hee.

Go check for 12V+ at the fan motor when you power the fan up to full speed.

Fuses:

1. Fuse 3 in the Passenger side underhood fuse block
2. Fuses 5A and 9C in the instrument panel fuse block
3. Fuse 11 in the relay center (passenger side kick panel)

http://www.bonnevilleclub.com/forum/...pic.php?t=5920
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Old 02-19-2004, 03:51 PM   #7
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Quote:
Originally Posted by fuddyduddy121
1. Fuse 3 in the Passenger side underhood fuse block
Uhh....I don't even have fuse 3.
That should be the blower relay right? WTF?!

Quote:
Originally Posted by fuddyduddy121
3. Fuse 11 in the relay center (passenger side kick panel)
Where is this? Right to the right of my PCM under passenger kickpanel right? I have no idea what I'm looking at though, bunch of grey cartriges.
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Old 02-19-2004, 09:54 PM   #8
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For the passenger side kick panel, try looking below the relays, under the chime module. There should be some fuses there.

Under the hood, the fuses should be right above the relays, look for the colored thingys.
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Old 02-20-2004, 03:48 AM   #9
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Ah, above gray box-like relays? K...give it a looker.
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