2003 Dodge Ram wont shift to 4X4

2003 DODGE RAM
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RANDY315
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Transmission problem
2003 Dodge Ram Four Wheel Drive Automatic

Veichle will not shift from 2wd to 4wd drive. slector switch is good and has a code in the tccm for internal error. check all powers and grounds they are good try replace tccm still has the same problem can you geve any advise
Feb 23, 2010 at 6:00 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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