Question about 2003 Chevrolet TrailBlazer

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2002 trailblazer. the air all of the sudden started blowing HOT air! also when air is turned on the rpms drop dramaticaly and have even stalled the engine a few times! what gives?

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  • kdrubly8 Jul 23, 2009

    found out what it was! need whole new heat/ac control panel. big expense! time for a trade

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Do you have standard environmental controls or are they of the digital type for one? As far as the RPM's dropping hard, you can have a dry compresser. try a can of " R134 with oil " sounds to me that if all this just started happening with the HOT air and the engine rpm's dropping. you may heve a leak in the system, and if you continue to run it you can cause sever damage to the compresser.

Posted on Jul 24, 2009

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Posted on Jan 02, 2017

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Usually a stalling problem in hot weather is caused by an electrical part getting overheated such as a coil or a relay, or a fuel problem.
I doubt the O2 sensor would cause it to stall that quick. And if a sensor fails it should turn on the warning light.
You might want to have the computer scanned for codes even tho the light has not come on.
How many times do you have to start it before it keeps running ? Will it stay running if you open the throttle ?

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EXCELERATOR


The problem is Trailblazers are pieces of junk...I own one so I know

Jul 16, 2008 | 2002 Chevrolet TrailBlazer

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