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Anonymous Posted on Dec 02, 2017

Have a 2005 Chevrolet equinox....blower is not working. all the fuses are good the relay is good there is no power to the switch no power to the blower and no power to the blower module... I can feel heat coming out but doesn't blow. All is dead but relay an all fuses are good.....I'm lost!! Any help would be appreciated

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Jeff Armer

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  • Cars & Trucks Master 15,575 Answers
  • Posted on Dec 02, 2017
Jeff Armer
Cars & Trucks Master
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Joined: Nov 22, 2012
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Did you test the circuit for B+ with a DMM - digital multi-meter ? Look at a wiring diagram to see all thing's involved ? Read in factory service info. how it works ? Without testing we'd only be guessing .
Air Speed
The HVAC control assembly applies ground to the blower motor control circuit that corresponds to the selected blower speed. The resistors and the blower motor are in a series circuit. The following list represents the number of resistors in series with the blower motor per particular speed request:
• Low speed--3 resistors
• Medium 1 speed--2 resistors
• Medium 2 speed--1 resistor
When the operator requests High speed, the HVAC control assembly applies ground directly to the blower motor through the high blower motor control circuit. The resistor card has a fusible link which, if blown, will require that the card be replaced.
Free wiring diagrams here

http://www.bbbind.com/free_tsb.html Enter vehicle info. Year , make , model an engine size. Under system click on HVAC ,under subsystem HVAC controls . Click the search button then click the first blue link , this is the blower motor electrical circuit .
Suggest u watch a few video's on youtube on automotive electrical testing .
Electric Testing Techniques You Need to Know

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Anonymous

  • 1263 Answers
  • Posted on Aug 29, 2008

SOURCE: 2005 Chevrolet Uplander LT - Cigarette and Aux power outlet not working

if the fuse is good and there is no relay then either you have a loose ground/positve wire or the socket is bad. you can easily purchase a after market socket from Napa or Oreillys for a few dollars of the problem is not a loose wire or bad fuse. good luck please rate this solution...thanks

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I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

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