Hey everyone, I drive a 1994 k2500 pickup with a 6.5 turbo diesel and 4l80e. The transmission has some problems I can't seems to fix. I have a gear ratio code and can't even do 65 mph. Can't accelerate up hills without getting stuck in 2nd gear after due to safe mode. Hoping there's a 4l80e wizard on here that can help me and save me some money. I enjoy the truck when it shifts and I can drive it but it's beginning to annoy me with its issues. Thanks in advance.