2015 Tahoe PPV Cyl 7 Intermittent Misfire

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

shawnbassee

TYF Newbie
Joined
Jun 3, 2023
Posts
2
Reaction score
0
Hello everyone,

I’m new to the forums, my names Shawn and I own a 2015 Tahoe with the l83. I’ve had a cylinder 7 intermittent misfire for some time now and I can’t seem to figure out what the issue is. Here is the list of items I have changed/fixed. Fuel pressure is good, injector balance is good as well.

Spark plugs
Coil packs
Plug Wires
Lifters (Checked cam was good as well)
Compression Test was within 5%
Send heads to machine shop for valves to be cleaned up
Injectors
Intake gaskets
Valvesprings
Pushrods


I am pretty stuck at this point, if anyone can give me any pointers it would be much appreciated. It’s worth noting that the flashing check engine light comes on at around 4000+ rpm and goes away after 20 seconds or so once the rpm’s drop. I pulled the misfire counter and it looked as if the misfire increased as throttle input increased. Any help is appreciated!
 

Forum statistics

Threads
130,455
Posts
1,832,966
Members
94,094
Latest member
Texan42
Top