am desperately seeking help.
Truck: 2003 3.4L V6. 75,000 miles. TRD Supercharger, URD 7th Injector.
My truck just started doing it a few weeks ago. No previous issues ever with the truck. After shifting from 2-3 or 3-4 or 4-5 under load up a steep hill on way to work, truck stalls. No rev, and it doesnt feel like clutch slip. I down shift and give gas as I've lost a ton of speed and it runs ok. Get to 4K RPM and shift again and STALL. It has done it about 6 times all under load, all with a new tank of gas (not sure if that makes a difference).
It kind of feels like my throttle is slipping or just not opening
No codes, no check engine light. And Its sporadic and I can't reproduce it. I need to fix it as its dangerous merging on this steep busy hill and losing all speed. Any help would be awesome. Thank you dudes.