Question about 1996 GMC Jimmy

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4 speed blower (fan)

The fan control for the htr/AC only works in the med high and high positions,I replaced the relay and the switch and still the same problem...in the 2 low positions I get nothing...

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You'll have to go to the dealer and buy a new switch panel. There is a circuit board behind the switch panel that went bad on yours. Don't get one from the wrecking yard, I made that mistake once.

Posted on Aug 11, 2008

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Posted on Jan 02, 2017

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3 Answers

I have a 2005 Chev Avalanche. The heater blower does not work on the high setting but works fine on settings 1 through 4.


I looked at 05 avalanche 1500--automatic hvac. The blower fuse is hot all the time. The fuse has an input leg and output leg, even if the fuse is blown, the input leg would still have voltage. If no voltage, you could use jumper wire connected to voltage on the output side of fuse cavity to see if blower would work. If you use jumper, use an inline fuse.
Yes, it could be something wrong with fuse box or wiring circuit?

Nov 30, 2017 | Cars & Trucks

1 Answer

Ac blower motor stopped working


YJ car.
the blower is dead. is that it?
does it blow full speed on high
do you have 12v on terminal A of blower , term B is 0v ground
got that, then the blower is dead.
if not 12v, then the controls are bad.
http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service

page 47
4 parts to make blow
1: fuse 12 good.
2: switch heater /on off.
3: high, med,low speed, use high, its direct.
4: the blower,
one of those points has no 12v on high,
use a simple voltmeter to find the failed point.

Jan 14, 2014 | 1994 Jeep Cherokee

1 Answer

I have a 1982 Chevy C10 When I turn on the ac/heat I only have high speed, no low or med. I have replace the high speed relay, the blower resistor, and the blower control switch. Same result. Also the


possible faulty new resistor, could be a bad ground wire shorting out.
older chevys are good for the ground wire corroding, heating up and shorting wit the wires near it, this can cause the fan to get stuck on high.

Oct 21, 2012 | Cars & Trucks

2 Answers

2000 Mitsubishi Spyder Interior Fan Only works on 3rd position. Fan Only works on 3rd position. Changed Fan speed control (Twice), resistor , fan ,and relays, But no change. Just one speed on 3rd...


Well according to the wiring diagram, the blower relay gets power from two sources and feeds the fan switch. High speed bypasses the resistor and goes directly to the blower motor. The other speeds go thru the resistor and the motor is grounded.
The AC control panel is connected thru the low speed which would include the other speeds also.
The only thing I could think of would be a break in the wiring or one of the connectors.
Did you check for voltage coming out of the switch for each speed, and then coming out of the resistor too ?

Sep 04, 2012 | 2001 Mitsubishi Eclipse Spyder

1 Answer

2008 Honda Odyssey AC fan works on low and med speeds but no high speed blower


There should be a high speed blower relay that bypasses the resistor for slower speeds.
Check with an auto parts store or the dealer.

Jun 23, 2012 | 2008 Honda Odyssey EX-L

1 Answer

The fan speed switch for the heater/ac will not work on the two lowest speeds, only med to high. Went to a salvage yard and got a replacement one, it does the same thing. Apparently there is something...


You need to get the blower motor resistor replaced.This is your problem.It is located by the blower motor.There will be a connector from the blower to the resistor.The resistor controls the fan speeds when you turn the knob on the control head.The blower motor is on the passengers side under the dash.Hope this helps.Good luck.

Mar 05, 2011 | 2003 Buick Century

1 Answer

Fan switch only has 1 speed, only works on high and drips water below glove box


THE BLOWER MOTOR RESISTOR FAULTY IF YOU HAVE ONLY 1 FAN SPEED ALSO AC AND HTR CONTROL SWITCH BAD.WATER LEAK UNDER GLOVE BOX COULD BE THE HEATER CORE LEAKING IF LEAKING ALL THE TIME WHEN THERE IS NO RAIN.

Dec 11, 2010 | 2001 Ford Focus

2 Answers

Have a 2003 Jeep Wrangler, Rubicon and the hear/AC blower fan only comes on in the high position. The other setting low, med and med/high the blower will not come on. Is this the controller it self?...


The problem usually stems with the blower motor resistor,high speed by-passes it and there-fore the controller is sending power but the resistor has gone open and the speeds can't be regulated.

Feb 08, 2010 | 2003 Jeep Wrangler

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