Hi everyone, After reading and reading on different sites, my question is still sort of unanswered. I have a 2000 GMC Sierra 1500 5.3 litre extended cab 4WD with what I beleive is a 4L60e transmission. I would like to know if I could swap that transmission (which lost 3 and 4th gears) with a 2003 4L65e out of a 4WD. Will I have many complications or will it bolt up and go ? Thanks for reading M ---------- Post added at 06:59 PM ---------- Previous post was at 06:58 PM ---------- the transmission I want to put in is also from a 5.3 litre engine.