replaced radiator,cap,heater core,and thermostat.still no heat on 1999 GMC Jimmy

heater control valve or dash switch? where is the control valve.any ideas ?thanks

by in Saint Clair Shores, MI on September 14, 2011
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2 answers 2 comments
ANSWER by , September 14, 2011
You have a blend door that controls heat. That door is controlled by a blend door actuator. Do you automatic temp or manual control?
COMMENT by , September 14, 2011
its manual control any way to make sure its the dash control without the process of elimination or the door actuator thank again
ANSWER by , September 14, 2011
Autozone have some popular workshop manuals for free on line once you register (for free) on their website There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate Alldata is great you will like it.
COMMENT by , September 15, 2011
thanks for the info,would still like some input on my problem.radiator also builds pressure but the waters not hot enough to burn you ,gauge says about 195