Thank you for your response and pleasure to meet you.
To answer your first question. I purchased the trans parts from Rock Auto ( internal harness, internal oil pickup filter, external red filter, pan gasket, and temp/psi manifold. I use Castro TranSynd TES 668 trans fluid. The fluid I dropped...
I have a 2003 Chevy Silverado 2500 HD Duramax 6.6 with a 5 speed Allison transmission, 130,000 miles. I’ve been fighting this problem for months. Three months ago I drove the mentioned vehicle for about two hours and parked it in the driveway like I always do everyday. The truck runs and drives...