I have a 1999 Express 1500 conversion van

Tiny
JEFLYER
  • 1999 CHEVROLET EXPRESS
  • 89,000 MILES

I have a 1999 Express 1500 conversion van. The dash heat and A/C work fine. But, the remote rear heater box blows cold air through the rear vents (on all dash heat settings). Is there some reason why hot radiator fluid does not reach the rear unit? Is there some switch that prevents it from flowing to the rear unit? If so, where is that switch located?
Thank you,
John

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Wednesday, December 26th, 2012 AT 9:23 PM

1 Reply

Tiny
2CARPROS KEN
  • ADMIN
  • 6,379 POSTS

Hey JEFLYER,

You have a blend door actuator that is bad in the rear unit. Remove the rear unit cover to expose the actuator. Here is an guide and a diagram you help you fix it.

https://www.2carpros.com/articles/replace-blend-door-motor

Please let me know what happens so it will help others.

Best, Ken

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Thursday, January 19th, 2017 AT 6:48 AM

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