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jefffoxsr

Michigan

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Joined: 03/25/2002

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Posted: 07/30/12 05:53pm Link  |  Print  |  Notify Moderator

2003 Yukon SLT. Electronic HVAC system. The fan control to increase the fan speed is intermittently not increasing the fan speed as it is turned up. What do I need to check or replace?

Thanks.


Jeff
2014 Camplite 8.6 Truck Camper
2004 GMC Sierra 2500 HD 4 x 4 Crew Cab 8.1 / Allison / 3.73 ( 6,810 # with no passengers )

NewsW

US

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Posted: 07/30/12 05:55pm Link  |  Print  |  Notify Moderator

Reset the computers and see if that makes a difference.

Next on the list will be .... does it have an amplifier it is driving?

sch911

Rochester Hills, MI

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Posted: 07/30/12 06:09pm Link  |  Print  |  Notify Moderator

It could be the blower power module: Here




OEM Auto Engineer
2003 Damon Challenger 348 Class A - F53 Triton V10
2004 Jeep Grand Cherokee Limited 4x4 V8 Toad


jefffoxsr

Michigan

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Posted: 07/31/12 07:45pm Link  |  Print  |  Notify Moderator

Thank you for the awesome link. I will do it.

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