Hi KevinTracy417,
It really sounds crazy and I am stumped.
Anyway I am interested in knowing the cause so I will provide some suggestions to see if it helps.
I take it that the following is true.
Trans is equipped with S mode.
The S indicator light in meter cluster is not flashing when driving.
Check engine light is not showing.
ATF level is correct and fluid in good condition.
Starter cranks well when starting.
1. Check the charging voltage, should be 13.4 to 14.6 v with engine running.
2. Check the ground strap below thermostat housing, near ECM/TCM.
3. Check gear shift solenoid connectors, lower 2 pcs of solenoid at front of trans.
4. Check trans throttle cable adjustment.
Good luck.
Saturday, September 26th, 2020 AT 11:52 AM
(Merged)