Engine/Transmission (1994 - 1998) Question for auto transmission experts?

[Traveler]

I now have 135k + miles on my 96 truck. The transmission was rebulit by ProLock about 55k miles ago. All of a sudden if I take off in drive the truck will go several feet then die like its locked up? If I shift back to netural real quick it won't die. It runs in reverse just fine, and if I put it in 1st or 2nd it will also go ok. Only drive has the problem? Does not matter if O/D is on or off. I was wondering if anyone had any idea if the problem is probably major and requires a complete rebuild or is it just one of those "don't know until I tear it down" kind of problem?



Looking for any kind of guess.



Thanks Ron

 

[Dennis Garrett]

sounds like it's going right to OD lockup. I have a three position "Mystery" switch on my 97, & it will do the same thing if I accidently start moving from a stop with the TC lock "on". I have to quickly move back to "unlock" or off. On 96's, you have to locate the black/orange wire I think it's pin 54 or 53 on the PCM (it's on the firewall on the passenger side) and it's probably grounded, forcing the TC to lockup.

 

[Traveler]

Dennis, if you were close I'd buy you a beer! I have not used that lockup switch in about a year and a half. Wife was cleaning the dash and guess what!



Again, thanks. I could just see the dollars floating away!



Ron