Oldsmobile/Buick Repair: HVAC blower motor cuts on and off 1998 Riviera, buick riviera, blower motor

Question
QUESTION: I have a 1998 Buick Riviera with the 3.8L supercharged engine and approx. 195,000 miles.  My problem is that just recently the blower motor started to cut in and out, it sometimes runs for a few seconds and sometimes it doesn't work for several minutes. Or it might come on and off every few seconds or so. It acts up regardless of what settings are on the dash controls so it rules out the a/c compressor.  It's the opposite problem to what others have been complaining about where it stays on all the time.  

It's as if there is a loose electrical connection somewhere as it just cuts in and out with no rhyme or reason.  I have read in other forums that it may be the blower motor control module?  I could not find any existence of a relay or resistor for this model car on the delco parts site.  Am I on the right track?

ANSWER: Hi
Looking over the diagnostics, the Blower module is likely your problem.
It is located on the right side, under the glove box.
Looks like it is mounted on the blower motor case.
Looks like also, 2 screws, and an electrical connector.
You MAY want to find this module and get the part # off of it then call your local Delco parts store.
I do hope this helps.
Please follow post back if more help is needed.
Pawl

---------- FOLLOW-UP ----------

QUESTION: Hi,
   Thanks for the quick response.  I will try my luck with replacing the blower module and cross my fingers that it solves the problem.  As of a couple of days ago, the fan has stopped blowing completely and doesn't cut in or out at all.  The other question I have is:  I have seen a recommendation in a couple of other forums that you should replace the blower motor when replacing the blower motor control module, otherwise it will wreck the new module? I don't see why this would be necessary.

Answer
Hi
I have NEVER heard of such, and see no legitimate reason why you should. All it is is a resistor. Voltage in and resisted voltage out.
Just change the module and forget it.
I would like to know ones reason for this..... just extra $$$$$ for parts dept.
Thanks for the follow, and let me know if it fixes.
Pawl