4l80e. Transmission failure 1st trip for 2015
My suburban has 123k and just blew the transmission on the first trip of the year. Fresh fluid and cool trans temps. Went to backup trailor on level ground. All gas/no go. Got it to drivewa...
Forum Discussion
Hi Burbman,
Yes it was a wiring issue. The wiring harness and inside of the PCU were corroded. That caused the super high temps last season, and the transmission failure in 2015. I also had strange engine codes all last year that could not be isolated. I camped this weekend at my favorite park, up and down 15% grades and the beast was roaring. Lockout was working, engine max temp was 210 after a serious 5 mile climb. I kept the trans in 4th and tow haul on, and it performed flawlessly. I was talking to a local mechanic over the weekend and the same scenario just happened with a duramax/allison combo in the shop. Computer destroyed the innards of the allison.
Yes it was a wiring issue. The wiring harness and inside of the PCU were corroded. That caused the super high temps last season, and the transmission failure in 2015. I also had strange engine codes all last year that could not be isolated. I camped this weekend at my favorite park, up and down 15% grades and the beast was roaring. Lockout was working, engine max temp was 210 after a serious 5 mile climb. I kept the trans in 4th and tow haul on, and it performed flawlessly. I was talking to a local mechanic over the weekend and the same scenario just happened with a duramax/allison combo in the shop. Computer destroyed the innards of the allison.
