2020 Jeep Gladiator: stuck in gear or won't shift

Filed Jun 24, 2025 · Transmission · NC

Transmission failed to go into reverse. 2020 Gladiator Rubicon with 57k miles.Transmission had been pausing and then shifting into reverse with a clunk sound. Have taken to a Jeep service shop and they did not find any error codes and were not sure of the cause. Problem started getting worse in the past couple of days to where when try to put in reverse, it will not do anything. the "R" light flashes. Have to shift into drive and then back to reverse to get it to go into revers. However, this has stopped working to where to at times cannot get the transmission to go into revers. the transmission also shifts hard on the upshift from 3-4th gear at certain RPMs/speeds. when has issue of not being able to get into reverse yesterday, had to push the vehicle back while in nuetral in order to get it to where i could then put it in drive.In drive on the main road, it would not shift out of first gear, so had to park it and get a ride home. several hours later was able to get the vehicle home. it appears from looking online that a lot of people have had this exact same issue with the 8 speed auto transmission. the only solution it to replace the transmission which costs upwards of $6k. As many issues there are with this transmission, Jeep should have a recall to fix this issue instead of customers having to shell out thousands of $s. Needless to say, i will never buy another jeep product. JEEP=Junk Each and Every Piece!

Filed May 18, 2025 · Electrical, Steering · TN

While driving in rush hour traffic, stop and go driving, a service shifter message started to intermittently appear, then the forward collision warning message started to frequently chime in and off, then I lost power steering, check engine light illuminated, other messages auto start stop service, service sway bar disconnect, transmission was stuck in 3rd gear then after a stop it would not shift out of 1st even switching to manual shift mode, was able to pull over to side of road. Turned off the vehicle, used my code reader to clear the codes, started the vehicle back on and everything was clear and vehicle drove as normal. Sure glad it didn’t happen at speed! I have read of other people having the same issue so I wanted it to add my concern as well.

Filed Feb 28, 2024 · Transmission · LA

transmission will not shift all the time and gets hung up! After following a group this seems to be a problem with the gladiator automatic transmission. It will not shift into reverse and shifts hard from 3rd to 4th. This should be a recall due to so many people having issues and the only thing to fix it is to get a new transmission.

Filed Sep 26, 2022 · Engine · LA

Error Codes P0300, 301,305, 420. Driving on the interstate I got the CEL light. One point during driving when the 420 code came in vehicle went into limp mode and speed was greatly reduced in 70 mph traffic. Luckily I was able to get to the side of the road so no accident happened. Researched the issue and changed ignition coil packs and plugs. Upon restarting vehicle got the P0300 coda again. More research done and found the bulletin from FCA for the repair. Took to dealership and they refreshed. Picked up from dealership and threw the code instantly. Took to another dealership and now they are saying it is because of aftermarket coil packs and plugs. This is a big issue with JEEP and they are not trying to fix anything.

Filed Jan 17, 2022 · Electrical, Engine · FL

I am getting a "service shifter" error and then my power steering goes out and the vehicle goes into "limp mode" This has happened at 70mph on the highway causing me to almost lose control of the vehicle around turns and slow down to an unsafe speed. I have taken it to multiple dealers that could not duplicate the issue but could see codes in the system. The vehicle is once again in the shop now and they are trying to blame everything but the Jeep itself. I know a few other Gladiator owners this has happened to.

Filed Jun 4, 2020 · Fuel system · 4,900 miles · MI

Check engine light came on reporting p018b code. Vehicle would not start, then when I did get it started will not accelerate from stop, will not shift into gear above 5th, and mpg drops to 5-8. Dealer replaced fuel pressure sensor and fuel supply line. Two days later check engine light came back on with same code. Dealer reported that fuel pump needs to be replaced. Currently part is on back order and will take 3 weeks to ship.