Join Date: Mar 2015
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Erratic shifting - is it the computer? Trans "feels" fine.
Not sure if this should go in Engine or Drivetrain so figured I'd ask in the general discussion.
My 8th gen is weird when it comes to shifts - but it doesn't seem to be the transmission slipping or anything, more like shift points are weird? If I give moderate acceleration, the vehicle tends to not shift into the next gear for a few seconds after I return to "normal" throttle position to maintain speed. Then, it seems to upshift much easier than normal for quite some time, even without much acceleration at all. It has erratic shifting for quite some time, even after turning the vehicle off overnight. I haven't unhooked the battery since I've installed my stereo (don't want to lose my settings), but it even did it while I was in the process of doing that and left my battery off overnight a few times.
Is there a way to fix this? The transmission feels solid, the shifts feel good, they just don't happen anywhere close to where they should and are erratic after moderate/heavy acceleration. Hell, there are times where it'll go into 3rd or 4th and just sit at 3k RPM for no reason as I'm driving normally, then it'll shift into the next gear or two to get down to cruising RPMs. If I have to buy a tune to fix this, then I'll start saving, because I'm getting tired of it!
Thanks for any insight, and sorry for the wall of text!
2013 Impala LT - Click the picture to check out my build thread!