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1995 GMC Yukon RR HVAC fuse

What is a RR HVAC fuse

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That is right rear air conditioner fuse

Posted on Dec 15, 2014

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1 Answer

The fan in my 2004 Yukon blows on and then turns off when I try to use the defrost, heat, etc


Has all the earmarks of a bad HVAC control head, or blower controller.

Dec 09, 2014 | 2004 GMC Yukon

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Not getting any power to the fuel pump 1995 GMC Yukon 517 later


If you actually have NO power at the pump and the fuse and relay are good, then there is a break in the wire between the fuse block and the pump but most likely it is a bad fuel pump

Feb 17, 2014 | 1995 GMC Yukon

1 Answer

GMC 2004 Envoy blows heat even with blower off ... Why ?


The relay in your blower motor is stuck on, there is a TSB for this issue. Replace the blower motor resistor and you'll be back in business.
How does the resistor get power if the fuse is pulled?
Replacing the resistor will cure both problems. TSB is a technical service bullitin seen below
Subject:HVAC Blower Motor May Run Continuously After Vehicle is Turned Off (Replace Blower Resistor Relay)Models:2004 Chevrolet Avalanche, Silverado, Suburban, Tahoe, TrailBlazer, TrailBlazer EXT2004 GMC Envoy, Envoy XL, Sierra, Yukon, Yukon XLwith Manual Control HVAC (RPO CJ3)Built Prior to August, 2003

Jun 04, 2013 | Cars & Trucks

1 Answer

Front HVAC fuse keeps blowing


Could be a bad ignition switch.. needs to be checked by a professional.

Feb 05, 2013 | 2001 GMC Yukon XL

1 Answer

2001 yukon Xl 1500 intermittent connection to rear ac . I need to know location of ac relays and wiring diagram


YOUR REAR AC AND HEATER CONTROLS SHOULD HAVE RR HVAC FUSES IN THE FUSES RELAYS BOX UNDER THE HOOD IN THE ENGINE COMPARTMENT.

Jul 21, 2011 | 2003 GMC Yukon XL

1 Answer

My 2005 gmc yukon rear a/c or heat blower will not come on front a/c and heat work well


{: ) If the front a/c and heater is working fine, that's good. At least the problem can be isolated on the rear HVAC circuits only.
Check first the RR HVAC fuse 30amp at the underhood fuseblock and the IGN 3 fuse 10amp at the IP fuseblock. If you found them good, then you can begin diagnosing the blower circuits wirings and connectors.
A faulty blower definitely will not give any output. If it doesn't spin for some reason, rear a/c or heating cannot be circulated.
A faulty blower resistor or speed control processor can also cause a zero air output. Sometimes, the blower may only work at certain speeds only.
A faulty rear HVAC control switch may not give the proper signals to the blower resistor or speed controller, and in turn will render the blower motor disabled.
Sometimes it can be a terminal connector being loose or burnt. However, the most usual cause for this type of problem is a faulty blower resistor.

Jun 12, 2011 | 2005 GMC Yukon

1 Answer

Heat blows out at floor only and ac does not come on even though light Indicates it's on. Has rear defrost and light works..Also has recirculating air button . I'm guessing the whole heating control in...


I would first remove the fuse for the heater control head for one minute and then put in and retry.
The control head could have locked up on you with a volt spike. The rear defrost switch does not go through the same circuit in the heat as the hvac controls. Could be a broken know also.
Could also be mechanical linkage on side of heater box above accelerator pedal may have broken or popped apart. or if electrical motor control may be actuator.

#76-11-01: HVAC CONTROL KNOB SPINS FREELY (REPLACE) - (Oct 9, 1997) 999999995.gif SUBJECT: HVAC CONTROL KNOB SPINS FREELY (REPLACE ALL THREE KNOBS)
MODELS: 1996-97 CHEVROLET AND GMC M/L AND G VANS 1995-97 CHEVROLET AND GMC C/K TRUCKS
CONDITION:
SOME CUSTOMERS MAY REPORT THAT ONE OR MORE HVAC CONTROL KNOBS SPIN FREELY, RESULTING IN LOSS OF FAN, TEMPERATURE AND/OR MODE OPERATION.
CAUSE:
THE KNOB'S PLASTIC INNER SHAFT MAY CRACK WHEN FORCED AGAINST ITS STOP.
CORRECTION:
IF ANY ONE OF THE THREE HVAC CONTROL KNOBS EXHIBITS THIS CONDITION, REPLACE ALL THREE KNOBS WITH NEW P/N 16268157.
PARTS INFORMATION:
P/N DESCRIPTION QTY 16268157 KNOB, HVAC CONTROL 3

Sep 27, 2010 | 1995 GMC Yukon

1 Answer

I have a 1995 gmc yukon and the fan has stopped working no heat no defroster


check all of fuses and relays first. the fan motors burn up. replace the fan motor

Dec 27, 2009 | 1995 GMC Yukon

1 Answer

Need copy of fuse box diagram,1995 gmc yukon


The heater motor is the only thing under your dash board that can cause this problem.

May 27, 2009 | 1995 GMC Yukon

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