inside fan stopped to work

HI !

I have a TB 02 with only 90,000 km

Please can you give me some points to check to repair a fan problem

http://img516.imageshack.us/img516/5502/chevrolettrailblazerss3vc2.jpg

when I push the fan's arrow to use the fan, the lights move but the fan don't !

I tried to search in the forum but I'm not sure that they speak about the same problem.

I looked to find a fuse and the only one named fan is ok !

thanks for your help !

You need to check the resistor under the passenger side of dash shoulod be Two seven mm screws holding it in. If it has black spotts or bubbles this indicates it has beento hot. Then it should be replaced other wise your control head has died. These are the most common problem with those so most parts stores have them on self.

did you check fuses under hood too? or you may have a burt up fan moter or a wire broken down some where or your switch is bad i'd check and see if you got power going to the switch..

you may have a burt up fan moter or a wire broken down some where or your switch is bad i'd check and see if you got power going to the switch..

thanks ! I'll check !

you may have a burt up .........you mean burn my fan motor is dead ?

I hope that the access to the fan motor is easy !

did you check fuses under hood too?..

the fuse is ok !

http://www.hebergementimages.com/images/1218034668_plan002.jpg (http://www.hebergementimages.com)


You need to check the resistor under the passenger side of dash should be Two seven mm screws holding it in.......ok........ If it has black spotts or bubbles this indicates it has beento hot.......ok......... Then it should be replaced other wise your control head has died. These are the most common problem with those so most parts stores have them on self.


You need to check the resistor under the passenger side of dash


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and between the floor and the dash I found and removed a panel with two 7mm screws
and there is something :

this : [URL="http://imageshack.us";]http://img175.imageshack.us/img175/285/souscoffrekk2.jpg (http://www.hebergementimages.com)

I remove with 5.5 mm and opened and nothing seems to be burn !

Nice pics, either that resistor/relay is bad or the auto HVAC head is bad.

Nice pics, either that resistor/relay is bad or the auto HVAC head is bad.


I just comeback from the garage and I think that my problem is near to be solved.

My version of trial blazer ( cj2 ) have this kind of resistor ( shown before )
but in my case, the motor is dead ( 140 can $ + tax )

they shown me this one under but this kind of resistor but it's not for my car !


here is : trial Blazer ( tb ) resistor fan - blower - a/c - vent
http://img527.imageshack.us/img527/5053/dscn01581ot7.jpg

here the same fonction but different design

http://img175.imageshack.us/img175/285/souscoffrekk2.jpg

Your picture in post #4 is the the relay/ blower resistor that commonly fails on these trucks.

Hope you can get to the bottom it nice pictures! let us know what the result is.

let us know what the result is.

the result is: only fan motor was dead
the resistor shown in my #4 post was ok !

I re-installed a new motor and everything allright now !

Good work.

finaly, I was curious to see if the motor was so dead as it appeared !

I opened the motor and surprise ! many black dust and a bit of rust

the little room where the spring extend was dirty ( 1 ) , I cleaned and slided the carbon many times,

probably, it was why only one carbon was touching the center ( # 2 piece )

I rebuilded the motor ( a bit difficult to put the carbons at the goods places )
and tested directly on a battery ! the motor is still running !

http://img372.imageshack.us/img372/8014/fancopieot0.jpg

Try to clean inside the fan's motor..it can save your money !

Nice tip I had never thought of taking one apart before. Thanks will remember that next time I have one die.