What's wrong with my truck?
My truck and run engine sounds good but I can
slide threw every gear but not a one will engage
I just added a half bottle of tranny fluid the day before because it read low. Would cause that and if so what do I do to fix it?
low tranny fluid would prevent transmission from engaging, as to why tranny fluid is low you will have to troubleshoot, may be a leaky tranny cooling line to radiator. Look for signs of a leak.