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GMC Denali 2500 HD Allison transmission

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On 1/6/2024 at 6:19 AM, CD Moody said:

My truck is under warranty for Allison transmission repair or replacement. It’s been at my dealer for over two months.

Im wondering if there’s a GM rep that could help me. I need my truck back



Customer service #  1-800-462-8782

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