2007 5.3 SS and I have an issue that is kind of hard to explain, but here it goes. The issue is while I'm driving the car is running smoothly and then it all the sudden will bog down and if you give it a little gas it will smooth out but goes back to bogging down. If I am coming to a stop and it's having the issue, I have to put it in neutral or it would probably shut off.

If anyone can point me in the right direction or have any ideas of what it could be I would greatly appreciate it.

 

Id start with testing the o2 sensor and all the sensors under the engine. Is its switching from 4cyl/8cyl while you have the problem?

 

No not changing from 8cyl, I do have a P0327, knock sensor low voltage and I have changed both the sensor and harness in Bank 1.

 

No not changing from 8cyl, I do have a P0327, knock sensor low voltage and I have changed both the sensor and harness in Bank 1.

 

No not switching from 4cyl to 8cyl