I have a 97' CCLB truck and this thing has never been run hard. It had sat in a garage unless hooked to a race trailer. I bought it with 98k miles a little over two years ago.
So about a 16 months ago my O/D light started flashing and I unhooked the battery and drove it home. My local garage changed the fluid and the filter. There was some clutch material in the pan (which there should be something now with 123k miles) but no signs of anything coming apart. I left that Friday morning for a race. I drive about 150 miles to the race track with no issues. Leaving on Sunday morning it started flashing again. I stopped and pulled the fuse (this was on low rolling hills). After I pulled out and down the road, we went up Fancy Gap Mountain (w/ 10k pound trailer) which is a hard pull. The transmission never gave any signs of issues. Two weeks later in town the light came on again. I played this game for over a year.
Three weeks ago it started puking fluid and got hot. I limped it home and pulled the transmission. The only thing the re-builder found was the shaft seal looked ruff going in the TC
. I had him do a full rebuild upgraded to a billet front cover TC
, new pump, valve body, acc
body, solenoid pack and 6 pinion planetary sets.
Now I'm getting a P1728 code twice in 20 miles. I bought the Edge Insight for the gauges.I is becoming disconnected from the PCM
on a random basis. Edge told me this was a known problem with the older PCM's.
What should I check for this code. I don't think it's a transmission problem? I do have a old superchips tuner on it now after the rebuild. I was looking for a little bit more power.
Sorry for the long post.