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on the throttle
your question is too vague. there are many control solenoids. Which one are you referring to?
The EGR valve has failed.
The Trailblazer has an electronic throttle (drive by wire). There is no IAC valve, it is built into the throttle body. Remove and clean the entire throttle body.
at least on the 2006 you can tee of the the line from the valve body that comes back to the side of the intake,
how to install 2006 Honda odyssey ashtray
how to replace pcv valve on 2006 e150 ford van
The transmission modulator valve, On your 2006 Chevrolet Monte Carlo, is located on the top of the transmission. The valve should be labeled as such.
It is a valve in the valve body, inside the transmission.
The 06 silverado 4.3 does not have a PCV valve.
Center of the rear valve cover.
does the 2006 silverado have a pcv valve