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heater wont shut off

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paulrice
User

Dec 11, 2009, 3:37 PM

Post #1 of 7 (1808 views)
heater wont shut off Sign In
i have a 2003 gmc envoy my heat blower motor will not shut off i have to pull a 40amp J-case fuse to shut the blower off i have low med high but the blower wont shut off switch or relay? if relay where is it located?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 11, 2009, 4:01 PM

Post #2 of 7 (1805 views)
Re: heater wont shut off Sign In
Is this an Auto temp Control system?



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



paulrice
User

Dec 11, 2009, 5:13 PM

Post #3 of 7 (1800 views)
Re: heater wont shut off Sign In
yes it is auto temp


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 11, 2009, 5:36 PM

Post #4 of 7 (1796 views)
Re: heater wont shut off Sign In
You most likely have a bad blower speed control module. You will find it next to the blower motor where the resister would be on a manual system.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



paulrice
User

Dec 11, 2009, 5:40 PM

Post #5 of 7 (1792 views)
Re: heater wont shut off Sign In
is that behind the glove box inside the car?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 11, 2009, 6:09 PM

Post #6 of 7 (1790 views)
Re: heater wont shut off Sign In
Yes, under the dash on right side.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



paulrice
User

Dec 15, 2009, 10:57 AM

Post #7 of 7 (1775 views)
Re: heater wont shut off Sign In
thankyou it was the module





 
 
 






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