blower not working

Hello,

It sounds like you may have a blower motor that is out or fuse # 41. Here are two guides that will help test the fuse and the blower motor with the fuse location and how to change the blower motor in the diagrams below.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is.

This problem had to get a new blower motor cost me $78.00

Air Conditioning problem
2004 Chevy Colorado Four Wheel Drive Automatic 82,000 miles

the blower does not come on but now and then has been checked and is good (was told ther is only 1 wire from blower) has new wire harnes new blower restor air compressor good but still will not work blower only comes on ones in awhile will be driving and it kicks on for awhile then kicks off cool air comes from vents just no blower thie is 2004 colorado 4 door 5 foot bed 5cylnder eng (would like a scamatic of air wireing and ground wires if possabile yhank you

Hi lg4jacksdown,

Thank you for the donation.

Problem seems to be due to an intermittent power failure. I have sent the schematic and diagniostic files to you. However it must be noted that since problem is intermittent, the test might not be accurate and some wiggling test is required, ie wiggle wire connectors to confirm the terminals are secure.

while the fan is blowing during either heat or AC the fan stops working on allsettings with the exception of high. the fan will start working again later on the lower settings, could it be a bad resister or do I need to replace the switch assembly?

check to see if power is going to resistor when this happens, if it does replace the resistor. also check for hot wire harness it may be heating up and losing contact

If you're testing for signal arriving at the resister, it's a ground signal that you're looking for, not power. The motor receives constant 12v.

Heater problem
2004 Chevy Colorado Two Wheel Drive Automatic 38500 miles
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my blower will only work at the highest level 4.
1,2,3 will not work Thank you for your help

Very good chance that the blower resistor is bad. Check for power at the resistor going into the resistor and then at the maotor to confirm. The high setting bypasses the resistor.

Electrical problem
2005 Chevy Colorado Engine Size unknown Two Wheel Drive Automatic 56000 miles
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I have a 2005 Chev. Colorado Extreme light duty p/u. The blower motor for the a/c and heater has a 4 speed operating switch. When I set the blower motor switch to position 1, 2, &/or 3, the heater - a/c blower motor doesn't work. The blower motor switch turns the blower motor on in position 4 (highest speed) only. I have checked the ground cable to make sure it is grounded good and I have check all plugs to make sure everything is plugged in good.

What do you suggest?

my friend you need a new blower motor resister. its located right next to the blower motor. they always burn up.

I have not checked the blower motor resistor for continuity or voltage readings yet.

check/ replace the blower motor speed resister

Test the blower motor resistor that's okay -problem is coming from the HVAC control module.

It's probably the cable assembly (gray connector) located directly below the glove compartment storage on the passenger side. It's a known problem and usually is the result of the passenger's foot hitting the cable and causing the wire to short out. If you disconnect the cable and reconnect it, it'll usually work for a while (until it gets hit by a foot).

Can the blower motor be maintenanced, such as lubricated, or will it need to be replaced?

Thanks!.

Hi Docbunn
Sorry fan motor is not serviceable.Sounds like a bushing running dry so replacement is necessary. It is located passenger side underdash in air plenum. It helps to remove glove box.
Let me know if you need any help
Thanks for donation

2005 chevy colorado heater/ac fan needs a new resister installed, how do I access it?

Should be under the rh side of the dash, below the glove box, near the blower motor. It will more than likely have a 5-6 pin red connector body. Just FYI, if it has not been diagnosed fully, often times what happens is a poor connection at the resistor connector results in heat damage to the terminal, connector body, and resistor. It may need a wiring repair as well. Was very common on the H3 hummer, which is on the same platform as colorado/canyon.

heater a/c blower motor only works on high speed

This is a pretty common issue. The main reason a blower motor only works on high is because the blower motor resistor has failed. I would recommend replacing that part, and that should take care of your issue.

My blower motor only works on high speed. I have read elsewhere that it may be the electronic connection. Where is that located?

Check the blower motor resistor item no.6 and the HVAC control assy on item no.1

Heater problem
2004 Chevy Colorado Four Wheel Drive Automatic 22000 miles

You didn't have the 3.5 motor on the drop down that's what I got. My heater fan started out ticking when you run it on low, the other speed you didn't hear it . Now it has started doing it in the second speed to. Is it the fan motor if so how hard is it to change and where is? thank you

the blower motor is on the passenger side under the dash. it may be something just rubbin against it..

I have a 2004 Chevy Colorado and the air condition started only blowing on high about a month ago settings 1 2 and 3 would blow intermittent at first than stopped blowing all together. Today it stopped blowing on high as well setting 4. What could be the problem. The AC compressor is coming on, but no air is blowing through the vents. Could this be a relay problem or a blower motor resistor malfuntion? Please advise.

Mike~

it is a blower resistor.here is a bulletin with part numbers.Subject: Blower Motor Inoperative In Any One or More Blower Speed


Models: 2004-2006 Chevrolet Colorado

2004-2006 GMC Canyon Blower motor inoperative in one or more blower speeds. This concern is due to a loose connection at the blower motor resistor.

Recommendation/Instructions:
Inspect the connection at the blower motor resistor. Replace the blower motor resistor and any terminals in the female part of the connector that show evidence of arching or corrosion. The replacement connector and terminals are listed below.

Part Number 15306069, Female Connector With Leads. Replace the connector body with leads only if the connector body shows signs of damage. It may be necessary to generate a SPAC case to obtain this connector with leads.
Part Number 12176387, Replacement Female Terminal. This terminal is made of copper-beryllium and can be located in Delphi tray 3 of your Packard kit. Only replace the terminal(s) if the connector body has no evidence of damage.
Replace the blower motor resistor only if it shows signs of arching or corrosion at its terminals.
post back with the results.

Air Conditioning problem
2004 Chevy Colorado Four Wheel Drive Automatic 72000 miles

Blower only works on high speed. Any ideas?

check the blower motor control resistance / module or something

The air conditioner fan control only blowes on position 4. Turn to position 1 - 2- 3 and it does not blow. What is my problem. Thank You

check resistor by blower motor may be bad.

Electrical problem
2004 Chevy Colorado 6 cyl Two Wheel Drive Automatic 40.000 miles

my 2004 colorado blower fan keeps going off and on is there a way i can check this too see what the problem is

The problem you describe could be the blower motor failing when the motor heats after initial operation. Also I have seen blower motor resistors that are pulling slightly high amperage cause a similar complaint.

There are four power settings for my AC, but only the fourth setting works. My AC works on full blast perfectly fine, but does not blow any air at all on the three lower settings.

Need blower motor resistor l;ocated in air plenum behind glove box area. just to left of motor.

I have a 04 rado with 65000 miles and myself and two fellow co works have all had this same problem with our trucks.....not to mention our Chevrolet work trucks all have had the resonator replaced along with the wire plug harness.....the harness cost like 95 while the resonator only cost 35 Chevy should put a recall on this i have seen the exact same problem with 6 trucks that i know about

You know we get a bunch of Chevy truck blower resistors gone bad much more than other products.