Question about 2005 Chevrolet Equinox

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I have no 12 volts to the heater blower motor. fuses,relay,resitor all ck good no speeds

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  • Master
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More than likely it is the resistor under the passenger side dash. Drop the covers under that side of the dash you sill see a 2" x 4" piece with 2 screws holding it in. It will have either a 3wire or 4 wire connector to it. This goes bad in just about all Chevy type trucks It costs about $50 - $100 at the auto parts store and takes about 30minutes to install with all the cover removal and re-installation. Once removed you'll probably see the the Circuit board is either melted or bubbled. It's bad. Also check the connector as they like to melt from overheating when the resistor goes bad. Here's a linkto what it looks like.
http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/product_blower-motor-resistor-acdelco_18053941-p?searchTerm=blower+motor+resistor

Posted on Jan 19, 2013

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  • Chevrolet Expert
  • 284 Answers

If the relay is good as you say, then your switch is bad. Make sure you have power going to the relay and through the relay. Did you try swapping relays with one another?

Posted on Jan 19, 2013

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Posted on Jan 02, 2017

keemo68
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SOURCE: 2004 Chevrolet Silverado Heater/AC Blower on without Ignition ON

there is no relay for the heater fan it's a 15 amp fuse and is on the accessories circuit. the reostat is responsible for all 3 speeds .with the key off there should be no voltage to the blower motor whether the fans speed fan switch is on or off. the fuse will be located in the fuse paneleither on the drivers left side in the dash or underneath the dash in the fuse block. you have a short in the harness that is under the dash and most likely it's a bad plug on the harness. your going to have to do some searching but that's where the problem short is... please rate

Posted on Oct 04, 2008

MacGyver911
  • 42 Answers

SOURCE: I have a 2001 Chevy

Replace the blower motor resistor. Remove the shroud below glove box, 2 screws and a snap-pop fitting. Be careful of the courtesy light. Remove the blower moter and disconnect the purple/black power connector to it - - you'll need this extra room to work with. 2 more screws, same size, 6.5mm on mine, 7or 8mm on some others, that holds the blower motor resistor in place. This replacement part is less than 40 bones at most parts store. Unplug, replace, re-install, test and you're on your way with about 2 hours of slow paced effort in your own driveway. Typical cost at a garage - up to $400, what a sham.

Posted on Mar 19, 2009

emissionwiz
  • 76691 Answers

SOURCE: Horn wont honk. Fuse is good and horn honks when

In most cases this problem is caused by the rotating ribbon circuit contact under the steering wheel having a broken filament, the part is known as a clock spring contact, u will need to properly disarm the airbag and remove the steering wheel to access the part. WARNING: Failure to follow factory Airbag disarming protocol can result in an unexpected Airbag deployment and possible serious personnel injury or death.

Posted on Aug 04, 2009

  • 1118 Answers

SOURCE: 1997 Chevy s-10 pickup (2.2L) Blower Motor problem

I don't know what you mean by temp module but i'am gessing the switch on the dash, but to me it sounds like the resister is bad, i believe its located under the hood on the air box if not than chk. under the dash by the heater motor, i have seen the wires burn that plug into it when they go bad, thats what makes the blower run and also regulates the speeds of the blower motor.

Posted on Oct 11, 2009

  • 2 Answers

SOURCE: heater blower motor not working, fuses all good

replace blower motor resistor module.very common problem.I've replaced hundreds in my 25yrs working with G.M.

Posted on Feb 28, 2010

Testimonial: "thanks, where is the blower motor resistor module located?"

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1 Answer

How do you check the ground on a heater blower motor


To check the Ground with a test light, attach the Ground clamp to 12 volts + and touch the tip to ANY Ground and the light will light-up. With a Voltmeter, touch one end to a known positive + (your fuse box is closest), and touch the Body of the blower motor and you should read 12 Volts either + or - , but if it has 12 Volts, then the body or ground of the blower motor is good. Could be the body ground to the body connection under the hood.

Nov 09, 2012 | Cars & Trucks

1 Answer

My heat stopped blowing in my 1998 escort zx2 it just quit where do I start I checked all the fuses they are good is there a blower motor relay ??


"I checked all the fuses.." There is only one fuse, the 20A WIPER one in the instrument panel fuse panel which energizes the blower motor relay. The panel also contains the BLOWER circuit breaker which supplies power to the relay. If these parts check OK, there will be 12 volts on terminal 87 of the relay with the engine running and 12 volts on the BLU wire connected to the blower motor. If you set the function selector switch to any position other than OFF, the blower motor should operate at a speed you select by rotating the blower switch. If this doesn't happen, rotate the blower switch to HIGH. If still nothing, the thermal limiter in the blower motor resistor may be open. If still nothing, the function selector switch, the blower switch, the resistor or even the blower motor itself could be defective

Oct 13, 2012 | Cars & Trucks

1 Answer

I have 2002 infinity I35 and the blower motor stop working ,I took out the blower motor to make sure was good. YES the blower motor still working .the only think I really don't know how to check is Blower...


WELL YOU HAVE TO USE A VOLT METER CONNECT ONE VOLT METER WIRES TO GOOD GROUND AND THE OTHER VOLT METER WIRES GOES TO EACH SWITCH SPEED.IF VOLT METER GET VOLTAGE A 1 OR 2 CONTROL SPEED RESISTOR BAD.IF RESISTOR BAD YOU WILL GET 1 OR 2 BLOWER MOTOR SPEEDS.IF BLOWER MOTOR WORKING.CHECK THE AC AND HEATER CONTROL SWITCH FUSE OR CHECK BLOWER MOTOR FUSE AND RELAY.IF ALL GOOD SO FAR CONTROL SWITCH ITSELF COULD BE FAULTY.

Nov 05, 2010 | Infiniti I35 Cars & Trucks

2 Answers

1994 Silverado heater blower does not start when switched on. Give it a whack and it works at all speeds. Blower motor or relay?


Disconnect the wire leads from the blower motor and check for 12 volts. If there is 12 volts, then the blower motor electric brushes are worn and the unit will need to be replace. If there is no Voltage, then your have a switch or relay issue that needs to be addressed.
Good luck and thank you for using Fixya

Mar 16, 2010 | 1994 Chevrolet Silverado 2500

2 Answers

Front blower motor stoppeed workin, replaced teh relay and fuse in the fuse block. Still have nothin


you wont till you replace the blower motor it self i owned a few of them and the blower motors do go out without any notice

Jan 15, 2010 | 2005 Dodge Grand Caravan

2 Answers

HEATER FAN BLOWER DOES NOT WORK


check fuse and relay.if all is good.check blower motor to see if its getting power if so motor dont run. replace motor.if not.and fuse and relay is good.problem could be the control switch or loose broken wire at control switch.

Dec 04, 2009 | 2001 Daewoo Leganza

1 Answer

Blower motor does not work at any speed


as you said relay is good,try to check 4 connection of relay,pullout relay,check if there a 12 volts supply,, a 12 volt control by ignition sw.,connection to blower motor, the last connection is to the switch mostly connected to ground.

Feb 15, 2009 | 1999 Dodge Ram 2500 4WD

1 Answer

Relay/resistor heater blower


There are two fuses for the fan. One is probably a 20 Amp in the fuse panel in the cab and marked "Heater". or "Heater/AC" The second is under the hood may be marked Heater, Blower, or Fan and should be 30 Amp. The one in the cab supplies switched 12 volts to the fan speed switch. The one under the hood supplies the 12 volts to the relay. The relay is normally energized by the 12 volts through the 20 Amp fuse in the cab and through the switch. I think you find that the fan has the normal speeds except for missing HI with the underhood fuse removed, and will turn off with the ignition that way. There is no hazard in operating it that way but you may want to replace the resistor/relay assembly before it gets too cold. The relay is a pretty trouble free device in most cases, maybe you can find a deal on a good one at a junkyard.

The whole idea with the relay under the hood started back in the Sixties believe it or not. There is considerable voltage drop in the wiring between the fan switch and the blower fan motor. By adding the relay under the hood right next to the motor, the voltage drop was reduced, both by the shorter wire, and by using heavier wire to boot. The motor gets really close to the full system voltage when the relay is closed. In your case where the relay keeps the fan running, it can drain a battery rather quickly too!

Dec 18, 2008 | 2004 Chevrolet Silverado 1500 Crew Cab

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