Mechanics

CHEVY CONTROL VALVE

2001 Chevrolet Silverado

Heater problem
2001 Chevy Silverado V8 Four Wheel Drive Automatic 80000 miles

my heater core,
where is the control flow valve.
my heater does not heat very well,
i fell heat in one water tube but not the return?
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Jesseg910
December 28, 2008.




http://www.2carpros.com/forum/automotive_pictures/170934_cabin_filter_1.jpg



The above info, came from the AZ site, they try to cover a bunch of years with their info. Can you locate your cabin filter? Some of my info shows it under the center of the dash.

I'd probably check vacuum source at the valve, first. If you take anything loose, it looks like coolant may try to run everywhere.

JDL
Dec 28, 2008.