The Blen Dor Single Control (ndr) is an easy Do-It-Yourself (DIY) repair for the most common heater problem of the 1999 - 2004 Jeep Grand Cherokee. 

“The Broken Blend Door.”

An easy User Friendly Do-It-Yourself (DIY) blend door repair kit!! 

This is a thru the glove box opening - Access hole repair - No dashboard removal.  No draining of the radiator.  No evacuating the AC system - No HVAC box removal - No recharging the AC system. 

The original Blen Dor is designed to be used with the Manual Temperature Control systems (MTC).  The MTC system is a single temperature control system.  

It can also be used with the Automatic Zone Control systems (AZC) The AZC system is a dual temperature control system  when the back passenger side actuator motor has failed.  With the Original Blen Dor Single Control (ndr) kit you can only use the driver’s side temperature control knob. The driver side control knob is the only one that will control the heat for both sides, the passenger side control knob changes the display numbers only, it does not control any of the heat output.

A very easy repair for anyone remotely handy with tools. 

Cut the access hole.

Only two parts to install.

Just slide the one part double door unit over the existing back drive connector.

Line up the new drive connector and push into the shaft of the door unit.

Close the heater box and install the actuator motor.

The job is done.

The Blen Dor Design

(More pictures below)

The Blen Dor Single Control (ndr) kit is designed and engineered to be an uncomplicated two piece unit.

It will replace the existing driver’s side plastic drive connector and both of the plastic OEM blend doors with solid aircraft quality aluminum parts.  

The blend door shaft is a ½” solid piece of aluminum rod. 

The passenger’s side of the shaft is machined so it will rotate freely around the existing passenger side drive connector. 

The driver’s side of the shaft is machined to fit the new aluminum drive connector. 

The two blend doors are 1/16” aluminum sheet stock tig welded onto the door axle shaft with six spot welds for each door (three on each side). 

The door panels are covered with a 1/4” vinyl foam rubber (High adhesion strength adhesive with a very good temperature range) covering applied to both sides of the door panels, all to make a one piece unit. 

The second piece is the drive connector it is a ½” solid piece of aluminum rod and stainless steel roll pins with the driver’s side stop pin attached.

The aluminum drive connector is machined to fit the actuator motor with the stop limit pin attached and to fit onto the end of the blend door axle shaft unit. 

These doors are designed to last longer than the vehicle.

For diagnostic and other information on the blend door repair see the Tech Tips or FAQ pages

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            NO Dash Removal

Included in the package:  The single control blend doors - One drive connector - Complete paper instructions - 

A length of aluminum tape - A multi-purpose drill bit for cutting the plastic heater box.

 "FREE" NO Dash Removal - Recirculation Door Fix 

 when you purchase this blend door item. 

Click "Here" for a full description of recirculation door fix. 

This is NOT a recirculation door replacement part

The Blen Door Store has a NO Dashboard Removal repair for the back broken drive connector.

        This repair procedure is Free for the Blen Dor Store’s customers who have purchased a

no dash removal blend door item!

FREE S&H for U.S.A addresses Only

International Customers - Please read the information on the Shipping page before ordering.