2004 Yukon Denali 6.0 AWD- HELP runs like my rav4

[Gene456]

Just incase there is anyone else with similar issues, my p0300 still comes and goes. I changed the spark plugs and wires again yesterday. I was thinking maybe I cracked a plug or something. I’ll have to see if the engine light comes back on.

 

[Fless]

WAG: Try doing a quick CASE relearn with a capable scanner to make sure the crank knows exactly where the cam is.

 

[Gene456]

WAG: Try doing a quick CASE relearn with a capable scanner to make sure the crank knows exactly where the cam is.

I’ll see if I can find someone to do that

 

[Gene456]

I’m back all. The fuel pump permanently fixed the low fuel pressure issue. The new plugs and wires permanently fixed the p0300. I originally bought all ACDELCO. Iridium plugs I believe and wires. Replaced them with ACDELCO copper plugs, advance auto wires.(which I was less than impressed with.) but all is well now. Engine light hasn’t been on since 01/02/2025