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2005 gmc yukon. the 4x4 selector switch will blink when

Customer Question
turning the key then goes...
2005 gmc yukon. the 4x4 selector switch will blink when turning the key then goes off and does not come bak on. replaced the tccm still the same. wiring checked ok power and ground.
Submitted: 6 months ago.Category: GMC
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Answered in 40 minutes by:
12/19/2017
GMC Mechanic: david craig, Owner/[email protected] 3D Atuomotive replied 6 months ago
david craig
david craig, Owner/[email protected] 3D Atuomotive
Category: GMC
Satisfied Customers: 5,767
Experience: owner/mechanic at 3D Automotive
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Hi my name is ***** ***** I'll be more than happy to assist you. Please allow me a few minutes to review your information. Thank you

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GMC Mechanic: david craig, Owner/[email protected] 3D Atuomotive replied 6 months ago

what fault codes are you getting out of the TCCM?

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Customer reply replied 6 months ago
i have not power to the connector plug. cant read codes.
GMC Mechanic: david craig, Owner/[email protected] 3D Atuomotive replied 6 months ago

no power on the dlc connector pin 16? how about grounds at 4 and 5?

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Customer reply replied 6 months ago
now i got code u1026
GMC Mechanic: david craig, Owner/[email protected] 3D Atuomotive replied 6 months ago

standby

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GMC Mechanic: david craig, Owner/[email protected] 3D Atuomotive replied 6 months ago

TCCM*

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