05 Tahoe - fan only has 2 speeds

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  #1  
Old 02-04-14, 04:43 PM
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05 Tahoe - fan only has 2 speeds

2005 Chevy Tahoe - The vent (heater/defrost) fan has 5 speed settings, but only level 3 and 4 work. Is this a problem with the fan or the speed control?

Adam
 
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Old 02-04-14, 04:51 PM
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i have heard the blower motor resistor can be a common issue.

this might help:
HVAC controller recall - Page 2 - PerformanceTrucks.net Forums
 
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Old 02-04-14, 05:35 PM
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I have an 05 Tahoe my blower motor was bad. Install a new one working like new.
 
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Old 02-04-14, 06:44 PM
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did you have the same symptoms - only 2 speeds or it didn't work at all? How difficult was it to replace the blower motor?
 
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Old 02-05-14, 05:05 AM
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They can be a PITA, but generally trucks and large SUVs are sometimes not quite as bad. Locate your motor and just a visual inspection should give you a basic idea what is involved.

Before I attack that, though, I would go with STS's resistor suggestion. Unless your Tahoe is wired differently than a lot of vehicles, that's what controls the speed selections.

Here's a good primer:

Blower resistor Resistor Guide

 
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Old 02-11-14, 03:52 PM
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When poking around for answers on the internet, I found there was a service bulletin from Chevy concerning this issue - took it in and it was fixed free of charge. Lesson learned - before you fix it yourself, see if there is a recall/service bulletin where it will be fixed for free.
 
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Old 02-11-14, 04:13 PM
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Wow...on an '05? Most times unless it's a safety thing...they could care less after it's out of warranty...at least thats my experience.

Glad they took care of it...but what was the actual repair?
 
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Old 02-11-14, 06:33 PM
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I'm surprised, too. Sounds as though it was a TSB, which would rarely give you a completely free repair.
 
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Old 02-12-14, 05:11 AM
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Last year I received a TSB notice for my '06 equinox for a heater related problem. Mine checked out OK but a guy here at work had his fixed free of charge.
 
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Old 02-12-14, 05:17 AM
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Maybe it was an issue that could cause a fire? Then I'm sure it would a free fix.
 
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Old 02-12-14, 06:48 AM
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The blower resistor was replaced. I was surprised myself - the service bulletin was good for 10 years or 150,000 miles - whatever came first. If I would have waited 1 more year, I would have been out of luck.
 
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Old 02-12-14, 07:17 AM
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The blower resistor was replaced. I was surprised myself - the service bulletin was good for 10 years or 150,000 miles - whatever came first. If I would have waited 1 more year, I would have been out of luck.
Technical Service Bulletins (TSBs) do not typically indicate a free repair, but are intended to direct the factory trained mechanics to a known problem with a known repair. Consider yourself very lucky.
 
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