Just to add my 2 cents. I was throwing that same code on mine, and at the time the converter was actually coming apart. Similar problems, dropped the pan and noticed a very shiny metallic filled oil. Dropped the tranny and the converter was smoked. Not saying yours has done this, but that's what happened to mine. And it was my TCI converter, not my Yank.

 

Po757

 

It was a long drive, atleast 55 miles... so it shoulda been warmed up by the time i got there... but it was still doing it even a mile from the garage. I think its not shifting into overdrive is the problem

Thanks for all the responses

 

If that code sets it wont allow lock-up!!! I found that out the hard way, thought my trans was takinga crap with me. Read the flow chart for the code and it told me then.

 

What garage are you doing all this at????????

 

Sounds like it's definitely in 3rd gear..lockup is good for a few hundred RPM, not a few thousand lol.

 

JJs Auto, its the only one available


Hopefully i wont have that problem anymore when i go back down to a 3200 for the extended cab

 

Sounds like the converter wasn't locking up......Do you have a trans. temp gauge? How hot did it get? not shifting into overdrive is only good for a couple hundred rpm so 3500 at 70mph is high.
I run a PI 4k converter and it locks at about 40mph and it runs at 6350 rpms at 70mph w/410's on 28" tires.

 

no temp gauge hooked up yet, i didnt run it at 70mph the whole way cause it was revin so high... i slowed down to about 55 or so, i have a trans cooler though

 

I'm no expert, but you're running taller tires than me (28") and taller gears than me (4.10). The fact that you have a 4000rpm-stall won't make rpms shoot to 3500 cruising @ 70mph. That trans dropped out of 4th gear into 3rd. With 3.73s @ 70mph, you should be turning ~2200 rpms in 4th & lockup (don't quote me) versus mine w/4.10s & 28" tires @ 70mph with rpms at 2300 w/ 4th & lockup. I've lost lockup w/ 4th engaged, and would see ~2600rpm. The only time I EVER saw over 3K was when I was manual 3rd after I blew a fuse that took out trans power (the first month after my GenIII swap).

Curious to know why you saw the high rpms though. Good luck!