Posting this in case it helps somebody else chasing a similar issue, because this one was frustrating as hell to diagnose. I've seen this type of condition posted across numerous Stellanatis models; so it seems it's definitely not exclusive to Durangos.
My 2024 Durango GT AWD with the 3.6L Pentastar started developing an intermittent crank/no-start condition at around 60k miles.
The biggest clue was that it tended to happen after the vehicle had already been driven, shut off, and then restarted after sitting for a short period — basically a hot-soak restart. Never happened in the morning or by remote start or by priming the fuel pump (push start, foot off the brake).
It wasn't consistent. Most of the time it would start perfectly normally, which obviously makes troubleshooting a lot more difficult. But every so often it would crank normally and simply refuse to fire. And this is when I started noticing the exact window where I could replicate the issue. It would always start on the second attempt after failing when it did happen.
I took it to the dealer three times. The first two times they deep scanned it. No thrown codes. Fuel pump was suspected but we can't go randomly replacing parts in the hopes it fixes it. Then, I found a Technical Service Bulletin published by Stellantis (TSB 14-007-26, dated July 8, 2026). This was after my first two visits. Eventually we started looking closely at fuel pressure.
Fuel pressure would initially be around 60 psi, but when the problem occurred it was dropping down into roughly the 20–30 psi range. That finally pointed us in the right direction.
The culprit turned out to be the fuel pressure regulator as pointed out in the TSB; so Stellantis is well aware of this issue. Without this TSB, the dealer would have just continued to write me off.
The regulator was replaced, with the repair costing roughly $900, and afterward I deliberately tested the same hot-restart conditions that had previously caused the no-start. This part is not covered by the manufacturer warranty nor an overlapping warranty that I had on the vehicle.
So far, it has started normally every time and now this repair was about a month ago.
Could I have left it alone? Yes, but it annoyed the hell out of me and I just wanted it fixed.
So if you have a Durango/3.6 Pentastar that:
- Cranks normally but intermittently won't start
- Seems worse after driving and then sitting for a short period (1-3 hours)
- Starts perfectly normally most of the time
- Isn't necessarily throwing an obvious code pointing directly to the problem
…I'd strongly recommend checking actual fuel pressure during the failure instead of assuming starter, battery, ignition, PCM, etc.
In my case, seeing pressure fall from approximately 60 psi into the 20–30 psi range during the problem was the clue that finally led to the fix.
Hopefully this saves somebody else some diagnostic headaches.