Question about 1997 GMC Yukon

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Fan works but no heat out of dash - 1997 GMC Yukon

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Sounds like thermostat. Common problem - change thermostat, gasket & coolant (50/50 water anti freeze) and you should be golden

Posted on Jan 02, 2011

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Weird noise and vibration in the dash when I turn my heater on in my 2003 Chevy trailblazer LS... When the heat is higher then the #3 setting it vibrates bad I can feel it all the way down in the petals......

Your heating system is broke in the dash. The doors or gates that change where the air is to go, has a broken hindge or actuator. Your heat is set to defalt to the defrosters as a safety thing. The vibration, I would say, is your fan & it may have been the thing that started your whole problem. The fan has something wrong W/ it, weather it has dropped, the shaft that it runs on is bad, or it is just going to the bad. To fix, the whole dash has to be dropped so that the gates or doors can be accessed for repairs & the fan, it's half in & half out of the passenger compartment. I've had 3 or 4 dashes out to do this work but it is TIME CONSUMING. Wish you the best, GOD BLESS.....

Oct 22, 2014 | 2003 Chevrolet TrailBlazer

1 Answer

Zafira radiator fan

Turning on the heat removes heat from the engine as it blows it on you. Make sure first that there are no air pockets in your cooling system as that can cause high temp reading and malfunctions in proper fan engagement. If that looks good test your fan, if it is working then test the fan relay, if it is working test the temperature sensor that gives the relay the go ahead to engage the fan.

Jan 16, 2014 | Cars & Trucks

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2000 acura tl coolant fan after fluid change

New thermostat, installed, saw, new coolant made a little mess filling reservoir, (normal) checked fan fuse for some reason, and condenser fan fuse (xxx ?:), and temp guage, is slightly lower on gauge (than normal?) (disconnected xxxx? quit? a bit? to get to thermosta?.t no dash warning lights have a feeling I popped a relay.


ok, you did a coolant service with STAT,

and it failed.

tell us what works right and wrong, symptoms only.

over heating? parked, (fan never comes on)? as it hits 225F?

under heating? ( fan stuck on , up North can cause huge cold engine)

dash gauge stuck low. (thermostat wrong heat range 180f is best. see FSM for spec. on this temp. spec..

Dash guage varies.? oddly (air in system)?

Dash gauge too high.? (Stat put in upside-down or bleed hole (jiggle) not UP side. higher side of mount , trapping air.)

Does something wrong happen only driving?


does cap on rad hold 12-14psi pressure, hot.?

if car has fan belts, are they tight? (for sure water pump does)

Nov 19, 2013 | 1994 Honda Civic

1 Answer

AC Fan Motor keeps burning out, is this common for this year and model

we talk her about any fan ( blower ) or (condenser) fan .what you ( repaired twice ) .why you remove the dash .how many fan motor you have .
if you turn on the heat or ac the smoke start come from where . you say its fried (any part) .

Dec 22, 2011 | 2004 Mazda 3

1 Answer

Today while I was driving my fan stopped working and I was unable to get any heat into the vehicle..Help What in your opinion is the matter?

There is a relay on the passenger side under the dash that operates the fan. Most of the time this relay causes the fan to quit working or work intermittently. Sometimes you can bump the dash next to the glove box and the fan will start.

Dec 08, 2010 | 2004 Buick Rendezvous

1 Answer

Screwed up dash in 98 wrangler

i have seen this before its the igntion switch . on the lock and key but the switch its self wich is located under the plastic cover on the steering colume

Oct 28, 2009 | 1998 Jeep Wrangler

1 Answer

The interior fan does not turn on in my 99.5 Jetta

fan under the dash??? theres no fan theirs only the fan aside the restrict or box. thr 4 speed switch that controls the speed of heat or AC

If its not working then the RB went back very commen

Aug 04, 2009 | 1999 Volkswagen New Jetta

1 Answer

Heat fan problem

it might be on the inside of the car on the passenger side under the dash or under the hood passenger side on he firewall

Feb 18, 2009 | 1985 Volkswagen Cabriolet

1 Answer

Where is the fan for heat/ac located on 2000 Alero

Blower for heat is usually behind the glove box, and you have to deal with the dash, sorry

Feb 08, 2009 | 2001 Oldsmobile Alero

1 Answer

No heat fan not working

out on the fire wall next to the evap box there is a fan speed control modugle that is real prone for failure be ready it is a dealer item only if they can still get it and it is some what prices good luck kdc744

Jan 01, 2009 | 2000 Lincoln Town Car

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