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Old August 24th, 2011, 10:38 AM   #1
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Default 1999 Blazer NV236 4X4 not working

I am at a fukcing loss here, friends 1999 ZR2 with a NV236 has NOTHING working on the 4x4. The lights on the switch flash briefly when the truck is started...but thats it. No switching on the vacuum switch, no engaging of the front axle, no click from the tccm. The dash switch has been replaced, fuses checked, pins on the TCCM cleaned. Any ideas of what to check next?
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