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MattWtech
typical friday at work.. nothing to do but diagnose a tough one, anyway i got a 2004 chev avalanche ,5.3 w/ TC. 4wd light is on, no scan tool communicates with it, brick doesnt genysis doesnt mentor doesnt tech 2 doesnt. checked DLC and it has power and ground, selecting switch has power but it wont select anything. also have power to transfer case module, and power going to transfer case from the module... but i think the darn thing is sleeping and the wake up procedure didnt work, anybody have any ideas.. already tried replacing switch and module by the way, and i also checked every single connector for pin continuity, and were good
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