Yeah not sure the cam is the right thing to do or keep it stock just afm delete. I have access to tuning so not too concerned there.
It’s got 3.08 gears so yeah a chance there is likely necessary.
This is gonna be a bit long but things got interesting yesterday…..
So about 400 miles from home the truck acted up and wife was concerned about us making it home. TBH so was I. We had been driving for 2.5 hrs at this point from last fuel up. Stopped briefly to change babies diaper and refill water bottles. Left truck idling for A/C as it was 109F outside — probably no more than 15-20 minutes.
Jumped back on the highway and this thing started bucking and jerking bad on acceleration. Rpm jumping up and down causing a lot of clunking from driveline slop etc. it was a bit scary as your merging onto I-15 with semis blowing past you at 80mph. So I was in it pretty hard all through the bucking a jerking for 30-45 seconds as I didn’t want to be come a sitting duck on the interstate. Finally made it to 65-70 and let off and let it relax a bit. Started accelerating lightly and it started in again. If cruising at steady speed on level road it was ok. But the slightest acceleration or just a little throttle to maintain speed up an incline you could I’m feel it jerking and bucking lightly. I made the decision to keep rolling another 35 miles to a Loves station since there weren’t any other options worth pulling over for since it was still running.
Made it to Loves with the behavior essentially the same the whole way. Never had a check engine light. This was definitely different than any misfire I’ve experienced. Almost like los of fuel pressure but it was like pulsing fuel pressure. It was idling fine for a good minute or so, revved it up in park to 3500-4k rpm no issue. Shut it down. Did a quick visual under the hood and checked oil level, all ok. Fired it back up - started fine. Put a code reader on it - no codes no pending, nothing. Checked live data for fuel pump info. Commanded and actual fuel pressures were nearly identical. Left wife and baby at loves in A/C while I went back out to test drive while watching fuel pressures. Never acted up again. Tried everything to get it to happen. Came back topped off fuel (was still about 2/3rds full) and loaded up wife and baby. Made it the rest of the way home without any issues including up and over tehachapi grade. Other than coolant climbing to about 122F at one point but it came back down pretty quickly once we leveled off.
So of course the wife is not sure she wants to risk taking this truck on our next trip - I could change a fuel pump but I’m not convinced that was the culprit. We still have my diesel rig but I need to rebuild the HVAC box on that. That’s why we don’t take it this trip.
Of course this happens when I start toying with the idea of the Escalade. figures.
) or 3.42 ( 
). I'd recommend either 3.73 or 4.10.
