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I haven't gotten around to checking the aux battery quite yet but given the fact that the main battery isn't an AGM, I would think it's a problem if not only relating to the charging aspect of the system overall. Thanks for the feedback.

Just for FYI - our JT was in the local shop (stealership) for a week. They diagnosed with a leaking passenger side valve cover gasket and consequently a bad O2 right under that leak. They repaired both and so far, so good for a couple hundred miles. Just to add some additional input to the...

Does anyone have a 3rd party warranty that they actually like and have used with success?

Ok - good to know. Thanks!!

Ok - update here by the OP. They "fixed" my misfire issues with a passenger side valve cover gasket and O2 replacement. Has been running well for many days now - no codes. However - I am still suspect of the batteries in this thing. I watch the idiot gauge on the cluster on and off while...

It's accurate. It's intentional. I choose not to play the game of "how many more miles can I get out of this thing before I get more fuel." I just get more fuel. Got bigger fish to fry.

Following...... Hell, these days if you hit a big enough fly going over 75 mph you'll do $4K in damage.

Hey all - doing my learning and research as a new owner of a Gladiator. Just bought a 2020 used Overland last week. I inspected the main battery (not Aux battery) and this is what I found: I'm no expert, but if the vehicle calls for an AGM battery.......shouldn't an AGM battery be sitting...

Not a GNX. 87 GN. 2nd owner. Bought it in 96 with under 40K miles and bone stock. Currently has about 96K miles on the clock.....and not bone stock any longer :).

Here's mine.

Hey Uparms - how's your truck been since they installed the 02's? I just got a call from the newest service tech working on my truck, he says that oil is leaking from the passenger side valve cover area and contaminating the O2. I can't recall from all of the stuff I have read if that is...

If I was quicker on my feet when we were looking at the truck, I would have plugged in my scan tool. I did not, and now I wish I did. When it threw a code, I plugged in, and it was all related to lean condition and misfires. Don't want to hijack this thread with different topics, but yes...

I think I'm screwed. 2020 Glad with 79,000 miles on the clock. Checking MaxCare it won't provide with that high of miles unless I'm missing something. We got the dreaded ESS light and CEL with misfires galore on our 3rd day of ownership and now I'm panicked that we just bought a bad truck. I...

Understood. I have a diagnostic tool. I see the misfires and lean condition information. I will cross my fingers that it is easy as you state. They (stealership) already changed the MAP sensor and tested a host of other things and haven't found the root cause yet. I also see a lot of folks...

Just wow to this thread. What happened to us is why I even went looking for information.....brought me to this. I just bought my wife her "jeep truck" she has wanted for some time. 2020 Gladiator Overland. 79K miles. Test drove it probably 15 miles. Fine. Drove it for probably a couple of...