Question about 1997 Chevrolet S-10 Pickup

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A/C Heater control doesnt work.... trips the antilock light

Ive replaced the blower motor and all the dials for climate control and still when i turn on the a/c or the heater the anti lock light comes on.... when i turn the climate dial to off.... the antilock seems light seems to reset and go off... The blower motor doesnt seem to engage at all and when the blower motor isnt plugged in and i turn the climate control on it still trips the A/L light... there's 5 volts going to the blower motor but still no function from the old or new motor. every once in a blue moon the motor will work but this problem is becoming annoying... chevrolet dealership says it was the climate control dial shorting out but thats been replaced.

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I have replaced the resistor and blower motor and all climate controls.... .. 5 volts on all speed except high... high gets 15 or 20 and sets off the anti lock light.... when i mess with the wiring going into the relay the antilock light flickers. i hope its just a short... i will be replacing the wiring soon... i will keep progress posted

Posted on Dec 05, 2008

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5 volts is not enough to run the blower sound like your blower resister is shorted out and back feeding the system did you check it?

Posted on Dec 02, 2008

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1 Answer

Randomly the climate control wont work. You can hear the hot/cold will work, and the settings want to work. But when you turn the dial to 1-2-3-4-5 it does nothing at all. Anything I can do at home? T


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Heater switch replacment


Hello! it's my job to make things as easy for the customer as possible...Therefore I must ask why you want to replace the heater switch? Is it because you have lost one or two of the switch speeds? Your vehicle is noted for loss of the Blower Motor Resistor...
Changing the Heater switch means removal of the Climate Control Assembly which is not the easiest of jobs...I've included the process...But are you sure the blower resistor is OK? If you have lost 1,2, or all blower motor speeds it's more than likely the Resistor pack. And a lot easier to change...
Guru...saailer


Remove climate control:





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  1. Remove the instrument cluster finish panel...
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  1. Disconnect the 5 climate control assembly electrical connectors...
  1. Remove the climate control assembly..
Removal of blower motor Switch:
  1. Remove the climate control assembly.
  1. Remove the blower motor switch knob.
  1. Remove the blower motor switch.
    1. Remove the screw.
    1. Remove the blower motor switch.

Removal of blower motor Resistor:


12_26_2011_2_22_49_am.gif
Blower Resistor is under the battery tray...

MOTORCRAFT Part # YH1698 ...cost $25

12_26_2011_2_28_50_am.jpg

Guru...saailer

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Why wont my a/c or heater fan come on?


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The first thing I would do is access the blower motor. With key on and/or the engine running wiggle the connector at the blower motor. It you get the same symptom than replace the blower motor. I run into quite a few of these with this symptom.

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Works great on high only doesnt work on any other speed


If it is manual climate control.
You have a bad blower motor resistor. To replace it remove the lower dash panel cover below the glove box and it will mount in the heater housing with 2 screws. It will have a 4 wire connector with the wire colors being OG/BK,LG/WH, YE/RD, BK
If it is electronic climate control then you would have to replace the blower speed controller which is also located in the same place.

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