Air Conditioning diverter door - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1971LT1SWBPOSI373 · 08-26-2002, 06:41 PM

Sounds like something is clicking down by the diverter door On my '94 C-1500, when you first turn it on, and after you turn it off it makes the noise. A friend said it was the diverter door gear drive. Anybody know anything about this????? Is it easy to repair???? Help !!!!!! TJ

*Zkast* · 08-26-2002, 09:30 PM

When the door has something holding it, or the gear drive in the actuator motor is wearing out it will cause that type of ratcheting noise.

More times than not its the actuator motor. You'll need to find out what side the noise is coming from, Left/center of dash or Right side. The mode select door is located just behind the center of the dash. The recirculate door is located on the far right side. The recirc door opens and closes on every key cycle and is usually where the problem is. This one is a pita to change. It's located on the side of the case next to the kick panel.

First step is finding out where the noise is coming from.. left or right.

08-26-2002, 06:41 PM	#1
1971LT1SWBPOSI373 Registered User Join Date: Mar 2002 Location: Springfield, VA Posts: 460	Air Conditioning diverter door Sounds like something is clicking down by the diverter door On my '94 C-1500, when you first turn it on, and after you turn it off it makes the noise. A friend said it was the diverter door gear drive. Anybody know anything about this????? Is it easy to repair???? Help !!!!!! TJ __________________ 1971 Shortbed 350/350 w/ Posi-traction 3:73's 1996 Chevy Silverado TJ in Springfield, Virginia Likes old Chevy trucks Drinks Miller MGD

08-26-2002, 09:30 PM	#2
Zkast Account Suspended Join Date: May 2002 Location: Olathe, Kansas Posts: 929	When the door has something holding it, or the gear drive in the actuator motor is wearing out it will cause that type of ratcheting noise. More times than not its the actuator motor. You'll need to find out what side the noise is coming from, Left/center of dash or Right side. The mode select door is located just behind the center of the dash. The recirculate door is located on the far right side. The recirc door opens and closes on every key cycle and is usually where the problem is. This one is a pita to change. It's located on the side of the case next to the kick panel. First step is finding out where the noise is coming from.. left or right.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.