Thanks for the responses to my previous question about my transmission. Talking about the same van, I have a chance to pick up the engine and transmission from a wrecked 2003 Caravan that has less than 800 miles. I was wondering about the possibility of using them in my 1990 Caravan, but am guessing that would open up a king size can of worms, especially with the electrical system. Any comments?

Hi there, This is my first post, I'm working on a 2000 GMC 3500HD Classic body style truck, chassis cab, 7.4L/4L80E, etc etc. The Security light on the insturment cluster is on, and the truck will start and run for about 2 seconds then die. I have been told by one GM dealer that the ignition switch is at fault, and by another that the ignition key cylinder is at fault. I have changed the ignition switch and the problem still exists. It is showing a P code saying that the PassKey password is not correct. The keys in this vehicle are not of the PassKey/Transponder type, they are just regular B89 key blanks so they aren't the programmable type so the password must be kept in a different location??? Will changing the key lock cylinder solve this problem or should I look somewhere else? Thanks for any help you may have. ES Butler Fleet Services Fleet Tech