NHTSA Complaint #11686844 — 2021 JEEP GRAND CHEROKEE L

3 DAYS AFTER PURCHASING MY USED VEHICLE THE "SERVICE TRANSMISSION" LIGHT TURNED ON FOR A FEW SECONDS. A FEW WEEKS LATER I NOTICED THAT THERE WAS A DELAY IN GEARS SHIFTING LIKE HARSH SHIFTING. I TOOK IT TO A JEEP DEALERSHIP AND THEY SAID THEY COULDN'T FIND ANYTHING WRONG WITH IT BECAUSE WHEN HOOKED UP TO THE COMPUTER IT WAS NOT THROWING A CODE. THE ISSUE CONTINUES WHERE THERES A DELAY IN SHIFTING, ONCE THE SHIFTING HAPPENS IT WILL ACCELERATE OR SLOW DOWN DRASTICALLY WHERE IT FEELS LIKE I AM SLAMMING ON THE BRAKES OR STEP ON THE ACCELERATOR. IT HAS BEEN TO THE DEALERSHIP SEVERAL TIMES WITH NO RESOLUTION, I HAVE TAKEN IT TO OTHER MECHANICS AND THEY REPLACED/ADDED A CLOCKSPRING ON MY REQUEST JUST TO SEE IF THAT WOULD FIX THE ISSUE FROM READING ONLINE THIS SEEMS TO BE AN ONGOING ISSUE FOR OTHER JEEP GRAND CHEROKEE L OWNERS.