Question about 2003 Chevrolet Trailblazer Ext

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Heating and Air System

There is a green liquid fluid coming from the back end of the passenger side. It smells like it is running hot, but the temperature needle is not registering anything. I have front and rear heat and air conditioning.

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You are leaking your coolant with Antifreeze in into your passenger cabin

Sounds like the linkage to your rear heating unit is holed, broken or loose.

If you keep running it like that you will over heat and have a break down. You need to check where the leak is coming from. May be the rear heater matrix which may be costly. If so do you use the rear heat ? you could take a pipe and cut out the rear heater matrix altogether if you don't want to pay to replace it, but either way you have to stop the leak it will be fatal to the car if you continue to drive it around. The temperature needle may not be moving cause the fluid may not be covering the sensor any more hence it can't sense how hot the engine is.

Posted on Aug 15, 2008

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