BlakeParker
Newbie
Hey guys. I have a 98 Z71 K1500 with the 5.7. I started having trans issues a little bit ago. It all started after I got on the road leaving my farm and was getting up to speed then on the 2-3 shift it hung and had a flare shift and hit some sort of low revlimiter.
I started doing some research and people were saying to do a jumper wire on the PCM. I made the wire and got it installed. Went for a ride and it shifted good then it suddenly started doing some more weird things. When I give it gas it hesitates then drops a gear and starts to go but at 2500-3000RPM it had some sort of a rev limit. I put the pcm woring back to factory and it was good for a few minutes then did the same thing with the low rev limit. But when in park it revs fine like normal.
So I’m not sure what to do as of now. New trans? New PCM? Where should I go first. Don’t have any issues on the code scan besides some things I’ve always had. My scanner only reads engine so might need the one from work. Any help is appreciated
I started doing some research and people were saying to do a jumper wire on the PCM. I made the wire and got it installed. Went for a ride and it shifted good then it suddenly started doing some more weird things. When I give it gas it hesitates then drops a gear and starts to go but at 2500-3000RPM it had some sort of a rev limit. I put the pcm woring back to factory and it was good for a few minutes then did the same thing with the low rev limit. But when in park it revs fine like normal.
So I’m not sure what to do as of now. New trans? New PCM? Where should I go first. Don’t have any issues on the code scan besides some things I’ve always had. My scanner only reads engine so might need the one from work. Any help is appreciated