Heater/ac Contol Head Problems

By hed0014
October 24, 2008 in Ask A GM Technician

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hed0014

Posted October 24, 2008

I have been having trouble with the heater/ac control on my 1991 Chevy Silverado for a few years now. They just go "dead", no light, no LCD, no function. Remedy until now is just to replace the control head. Last one I replace lasted over a year. Now with a new one it will not power up; not lights, No LCD, no function. Seems like it is not getting any power .

Fuse in dash cluster is OK.

When other control head powered up there was no problem with functions.

Any help?

John

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