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That’s where it gets weird. If you don’t have the recall done for the tone ring software, they should replace the ring, if you had it done then they just do the software if I recall correctly it’s a pain to remember

Try an impact. Also a good thick wall socket is needed to get these bolts off sometimes.

Check your three exhaust flange bolts near the passenger side front floor board to see if they are in tact, if those are good you most likely have a sensor going bad in the exhaust. Keep in mind that these sensors also impact your trucks ability to regen, so it won’t regenerate until fixed and...

Bio, I thought the same thing, took mine to the dealer and they quoted me 13k cause it was going to break off in the head… found a heavy equippment mechanic who did it at his house for 500$

Should be near the accumulator

Both pics are with 35/1250R20 Top is 2” rough country leveling kit Bottom is 2” kit and 1.5” body lift. Tires slight rub with 1-1/2” spacers but doesn’t bother me.

165k and Mines been intermittent when I remote start, never with key, I cycle key from on to off and back on real quick while in park at idle so engine doesn’t shut down and it doesn’t set the code. I did my #4 when it would sporadically flash on while driving

My guess? Tone ring failure.

Welcome!

I drove mine with a stripped plug for around 500 miles hoping it would shoot itself out and it never did. But there’s always a possibility for it. Plug it back up and hopefully the truck regens as it should

I too get the whirring sound when decelerating, assuming it’s the vgt vanes closing on the turbo, also around 55-65 mph I get your described sound. Very prevalent when I’m pulling a trailer. I discovered mine very similarly coming back from nj with 3k enclosed trailer. The only thing I did since...

Cp4 fuel pumps are notorious for it when poorly lubricated fuel is used

I’d assume a short under the frame somewhere

Sounds like an injector issue

Takes a decent amount of for it to break loose. Maybe an oil filter strap?

Had it happen yesterday to me, no codes, few in the bcm for random stuff. Reset and good to go

I had an issue when I added led headlights and fog lights with my truck telling me my reverse bulbs (led)were out when they had been led since I bought the truck. I added the error message cancellers to the headlamps and haven’t had another issue. These trucks are very sensitive and don’t like...

@John Jensen wasnt there mixed reviews as to that true recall? Iirc the recalls drops power and allows power to a safe spot, not nessasarily full power or ability to restart.

What codes?

If I tow a heavy trailer with my eco and don’t manually shift when taking off, I’ll get a P04DB Code every. Friggin. Time. I found that with my larger tires, and the transmission tune, it makes my engine lug and throws the code. Just something I do out of habit. Now I’m not sure what your codes...