At this stage in the job, things are going pretty good. The plastic has been cut, the old broken blend doors
are out, and you are starting to see hope for having a heater again.
You should be excited, but don't celebrate just yet - there's work to do.
Start with installing the rear Heater door.
Align keyed shaft and slide into place.
If the rear pin is not aligned in a way that allows you to install the
door - DO NOT TRY TO TWIST OR FORCE THE PIN OR BLEND
DOOR INTO POSITION!
Instead - complete the AZC System recalibration process.
This will cause the motor to spin the pin around into position.
Install the second door (closest to you.)
Install Heater motor drive shaft through the opening by aligning the
two pins. The stop limit pin should be aimed away from the blend
|Time to test it all out.
Once both doors and aluminum drive shaft connector are installed,
you should check functionality of your system.
Before sealing up the plastic air box, check for functionality.
Reinstall drive motor and wire connectors.
Start the Jeep® and turn both temperature knobs to max heat
position. Both doors should lift into the up position (see photo
Dual Zone Heater repair kit for all 1999 - 2004 Jeep®
Grand Cherokee® with dual zone heater controls
Lifetime warranty against defects or failure of our product.
Save hundreds of dollars and fix your Jeep® Heater at the
Open the glove box and remove the two rubber stop tabs
on the top lip above the open door. They look like a
sideways "D" and can be pulled straight down to remove
them. If your glove box has a dampener on the side,
release the clip from the glove box to lower it down all the
Work the glove box free from it's lower hinges.
Once the glove box is removed you will see a wire
harness and a small motor assembly held on by two
Remove the two screws from the drive motor.
Disconnect the wire harness. Set the motor in a safe
Unscrew the single phillip screw aiming down on the front
of the black housing. Some vehicles use a metal clip that
can be pried off with a flat head screw driver. Set these
parts aside for later use.
Disconnect and tuck any harnesses up and out of the
way of the cutting area.
This is a close up photo with a yellow
highlight added for you to clearly see the
cut out line.
A pneumatic air saw was used here to
complete the cut. Any type of cutting tool
that can cut plastic can be used including
hot knifes, Dremels and rotary tools, air
saws and, electric body saws.
Click the photo for a larger close up.
Note the angle of the saw blade in the
photo. Cut with your blade skimming the
back of the section being cut out. You
should imagine trying to aim the blade
towards the drivers side headlamp. This
will keep your cutting blades far away
from your evaporator.
Take caution while cutting. The A/C
evaporation unit is just to the right of the
At this point the first of two cuts is complete. You should now
see the first blend door. This is the door that operates the
Drivers side temperature settings.
You will now need to cut out the plastic divider between the
two blend doors. This part can be discarded once removed,
as It does not serve any purpose.
Once the center divider is removed, you will see the second
blend door. This is what controls the passenger side
Image showing both doors side by side, A/C evaporator
Use pliers to help remove the white drive shaft connector.
Remove the white drive connector and discard.
|You are now able to reach in and remove both of the faulty blend doors.
Once functionality is verified, remove drive motor.
Install the cutout plastic housing back into place and seal with provided foam tape.
Install drive motor and screws (or clip).
Close glove box and reinstall rubber stop tabs.
JGCParts Heater Blend door repair instructions
RHD Instructions click HERE
Dual Zone Heater repair kit for all 1999 - 2004 Jeep® Grand
Cherokee® with dual zone heater controls
Lifetime warranty against defects or failure of our product. Save
hundreds of dollars and fix your Jeep® Heater at the same time.
Once in place, your new JGCParts Heater
blend doors should move up and down when
you adjust the heat controls on your A/C
system. If they do not respond, disconnect
your battery for 30 seconds to reset the
Sometimes the computer will shut down the
motor if it senses a problem with the blend
doors. They will cycle once the battery is
disconnected for 30 seconds.
I installed the dual blend doors on my wife's 2000 Jeep Grand
Cherokee last night. Easy install and they work great. I used a
Dremel tool with a drill bit cutter which cut very well. My auto
repair shop quoted the typical dealer replacement with
dashboard removal of approximately $1,500.
Thanks for providing a great product and getting the Jeep
warm again for my wife.
I just replaced the damper doors in my 1999 Jeep Grand Cherokee Limited this past weekend and voila this morning I
had heat on the way into work. About a month ago I realized I had no heat and began to research the problem and
was astonished to see the fix would probably cost close to $1,000 or more. Luckily I came across your site and was
impressed with the metal replacement parts and the unique way of accessing the area that needed fixed.
I ordered the parts last Monday, they arrived Wednesday, and I tackled the problem Saturday and in just over an
hour I had my heat fixed. Thanks for the great customer service, products, and well detailed directions.
|You guys are so awesome! I got the kit and within an hour my jeep had heat.
Thank you so much!!
I just wanna thank you for the blend doors. I installed them and heater works like a champ. Your service and product
is great. I am gonna suggest you all who has a jeep with a heater problem and I will give you a positive feedback
always, thanks again
|I would like to thank you for your product you have made for the Jeep Grand Cherokee. We are new owners of a
1999 Grand Cherokee that had no heat on the passenger side. The man we bought it from mentioned it was a $150
fix. He told us about your product and we searched you out on the net. It works great!
Thank you from Minnesota where the low tonight will be 0 F
Thanks, Adam Schmidt & Jennifer Godden