1997 DeVille blower motor not working
 

Checked out the proceedure, here's what I found:

red lead at the plug [c?] 14.2 volts to engine ground

14.2 volts between red [c] and black [a?] -the 2 ends of the plug.

between the red and middle contact, I got14 Volts also.

zero volts between middlecontact and black end plug.

I turned the blower up to high on the dash, no change in the readings..

All tests done with the engine running, but cold. I didn't have time to let it warm up [does this matter?].

I have ordered a FSM but haven't received it yet.

The display on the dash appears normal, display changes appropriately with the buttons pressed.

Questions;
Did I perform the checks correctly?

Are there any other checks I can perform with a voltmeter?

I can borrow a Snap On MT 2500 scanner, would that help me narrow it down?

Before I buy a motor, I want to be sure I did the right checks andbuy the right parts. If I need a dash controller or something else, could you tell me how to check it?

Thanks
BF

RE: 1997 DeVille blower motor not working
 

hi just had the same prob with my 92 eldorador,my blower motor was makin alot of noise befrore it finally quit,i replace the blower motor and it still would not work,thanks to the guys on this forum thay said check the blower module,i went to the auto wrecker and got a module and replaced it and now eveything works fine,when my blower motor seized it blew out the module,not that expensive,i got mine for 30 dollars canadian at the wrecker

same problem
 

Hope you figure this out,,Im haveing the same problem with my 1997 deville,,,
let me know what you find out
MonteK

now keep in mind on a cold start the blower motor does not initially kick on until the coolant temp reaches a certain point. unless you override by changing the fan speed