Chevrolet C/K truck mode and blend door actuator replacement
Here's a video covering a common repair issue on GM C/K series trucks.
If you are having problems with no heat, no cooling or air coming out from the wrong place and you've confirmed that the control panel isn't burnt up, then chances are you have a failed actuator.
Air door actuators are cheap and fairly easy to replace on these vehicles. However, ensure that the control panel IS functioning and sending commands to the suspect actuator before condemning it.
There are three actuators which do three different things, so make sure you have identified which one is defective before buying a replacement.
1. Mode door: Mounted on end of case near driver's right foot. Controls where airflow comes out at.
2. Blend door: Mounted on rear(tailgate side) of case roughly behind the ashtray. Controls how hot or cold air is.
3. Recirculate door: Mounted on top of case, very hard to access. Controls whether air is fresh or recirculated. Most people don't bother replacing it.
WARNING: DO NOT "TEST" ACTUATORS WITH THEM DETACHED FROM THE HVAC BOX!!! THEY WILL OVERTRAVEL AND BE OUT OF INDEX AS YOU'LL SEE IN THE VIDEO. YOU CANNOT REPAIR THIS EASILY, SO ALWAYS HAVE THE ACTUATOR MOUNTED TO THE BOX BEFORE ANY KIND OF TESTING TAKES PLACE.
ALSO, INSPECT THE FLAPS THEMSELVES TO ENSURE THAT THEY ARE NOT HANGING UP. AS WE ALL KNOW ANYTHING IS POSSIBLE WITH GM.
1999 Tahoe HVAC Head Unit Replacement - EricTheCarGuy
1999 Tahoe HVAC Head Unit Replacement - EricTheCarGuy
Welcome back to another episode of ETCG where we boldly go where we haven't
before, taking apart the dash on this 1999 Chevy Tahoe. To be honest it
was easier than I thought, if I were to do it again I would try first
cleaning the switch and if that didn't work I would just replace the switch
for the problem this truck had. I'm learning things here too you know.
Click below and Stay Dirty
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Chevy blend door actuator driver side
The internals of Chevys, DRIVER side blend door actuator. Used in my case
for a 2005 Avalanche with dual zone auto HVAC. The actuator was "clicking"
and occasionally only hot air would come out until the truck was restarted.
$60ish on Amazon.
Chevy Blend Door Actuator Replacement - Part 1
This video describes the basic task of replacing one of the cooling system
blend door actuators. As described in the video, we have a 2010 Traverse
that all of a sudden started only blowing HOT air into the passenger seat.
After days of internet study, I found that it was most likely the "blend
door actuator". I found a cool parts diagram of the AC system, so knew
where to look. After finding the bad actuator, I removed it, ordered the
part, and am ready to install the working part.
A C Switches
A/C pressure switches are pretty straight forward. They are both,
electrical switches and pressure transducers. Their purpose as
electrical switches are to interrupt the circuit. There are many, many
different arrangements that these switches can be configured in an
electrical system. So, always be sure to review the diagram for the system
you are working on.
GMC Jimmy, S10, Blazer DIY How to Diagnose HVAC Mode Control - Vent - Defrost - Floor Selector
This video should provide a starting point in trying to diagnose a GMC fan
mode selection issue. My 2000 Blazer always blows air out of the dash
vents. This video demonstrates how the vacuum actuators work to divert air
from the vents to the foot wells as well as to the defrost vent. In the
next video I will test the vacuum to ensure that I have sufficient vacuum
to the actuators. Ultimately I believe that I;ll have to replace the upper
actuator, as I believe that it is faulty.
How To Install Replace Air Temperature Door Actuator Explorer Mountaineer 98-01 1AAuto.com
1A Auto shows you how to replace the vent door actuator on a 1998 Ford
Explorer. This process is the same for 98, 99, 00, and 01 Ford Explorer,
01, 02, 03, 04, and 05 Sport Trac, 01 to 03 Explorer Sport, 98 to 00 and
the 05, 06 and 07 Ranger, 98 to 01 Mercury Mountaineer, and similar for 02
to 04 Ford Expedition and 02 to 04 Lincoln Navigator.
Chevy Blend Door Actuator Replacement - 2007 Impala -Clicking noise / Heat / AC / Fresh Air
Fresh air blend door actuator .. Ford Explorer . Truck .Noise From Behind
Glove Box Impala Chevy Chevrolet .. Ticking Noise .. Clicking Noise when
actuating Heat .. How to Replace Blend Door Actuator - Change Remove
Install .mode valve . Gm Under Dash inside dash .. Chevrolet Impala Noise
.. Chrysler Dodge Buick Ford Toyota Lincoln Mercury Pontiac Camaro Corvette Minivan .
Passenger Side . Driver Side . No Heat . No Air Conditioning
How To Unclog a Heater Core - EricTheCarGuy
Heater problems in the winter suck. But with a little diagnosis you can
usually figure out the problem. Heater cores can get clogged from time to
time and this video presents a solution to that problem should you have it.
BTW, the product used in the video was CLR. If you KNOW you have a clogged
heater core this procedure is a good thing to try to help fix the problem.
However, if you are having heating problems I would suggest you check for
air in the cooling system first before performing this procedure. The #1
cause of heating problems is actually air in the cooling system. More
information on how to deal with HVAC issues can be found in this article I
How to Bleed a Cooling System: http://www.youtube.com/watch?v=zUpXgAJ1gjU
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Stump Removing Apr-27-09 - Now the lil guys can play...
So I guess a lot of the mudders were complaining about getting hung up on
stumps. We never had any problems! Oh well, we put the "Swamp Thing" in
action, and yes the Boom/Claw, and Stump Blade is all homemade, fabricated
by Mike. We removed the stumps but we probably just made bigger holes for
the lil guys to get stuck in! mwahahaha
New! - see Rock Removing Video http://youtu.be/551X4qEXxT0