Question about 1998 Cadillac DeVille

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My 98 deville wont blow heat or air, what can cause this?

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A bad blower motor can cause this. Also a be fuse can be the culprit. There is a separate fuse for speeds 1-4 and another one for speed 5(or 4 if there is only 4). The fuses will be labeled fan low and fan high. If the fuses check out than it is probably the motor itself. It bolts up under the passenger side of the dash with three or four 7mm bolts. Also there will be a two to four wire harness involved. This is not too difficult of a job to do if you have the time and want to save the money. The hardest part is getting under the dash comfortable enough to work. Please let me know if this helps! Thanks!

Posted on Oct 05, 2010

  • david stronge Oct 05, 2010

    looked through my owners manual for the fuses in question, does not show me any fuses in any of the boxes for the blower speeds. where should i look?

  • Robert Miller
    Robert Miller Oct 06, 2010

    It may be labeled HVAC or AC/HTR also.

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