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4x4 question

   
Old Dec 29, 2015 | 01:04 AM
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Can anybody here tell me what this actuator under the battery tray does it does not make sense if it has a shift motor then what is vacuum operated 2003 blazer 4x4 4 door
 
Last edited by fatalflaw; Dec 29, 2015 at 01:05 AM. Reason: spelling
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Old Dec 29, 2015 | 03:07 AM
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Standard 4WD - the encoder motor = shift motor shifts the transfer case from 2WD to 4WD high or 4WD low and back - vacuum actuator under the battery tray shifts the axle lock up in the front differential
 
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Old Dec 30, 2015 | 02:23 PM
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Thanks for reply this is my first blazer or chevy for that matter
 
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