07 Tahoe stuttering

[sarge77]

Scanner says general misfire. Unplugging maf causes a service traction control/stabilitrack on dash, no codes. Just concerned that my oil pressure was so high before the sensor change and now at least 15 to 20 psi lower. Checking fuel pressure tonight and then i guess a timing chain change if all else fails.

 

[OR VietVet]

So, you are going to tear it all down for a timing chain on a "guess"? I am not saying that it isn't a timing chain and that I could "guess" any better but have you checked "all" the grounds?

https://www.fixmyoldride.com/Chevro...e7e5cd24ed24635&at_ab=per-2&at_pos=3&at_tot=4

Do a compression test, too.

When you do a vacuum readout test does the needle hold steady or does it fluctuate at idle?

 

[sarge77]

Alright fuel pressure test done...45 steady with key on engine off. Over 60 running and when gassed drops to maybe 55. Grounds all look good. CKP connection checked tight and wires look great.