new member from Belize

petesvlog · May 20, 2017

Hi guys, G from Belize. Having some problems with my 2007 Avalanche 6.0 that i havent been able to solve. Hopefully i can get some help from you guys and one day help someone down the road. thanks.

So ive got an 07 LTZ Avalache with the 6.0 and 125k miles for the past 7 years with no problems. a few weeks back it started to lose power, got to the point where the engine bogs down and backfires through the intake when u push hard on the accelerator, below is a list of things that ive done.

1: brought up a throttle actuator code, i changed the throttle body.

2: P0341, i have changed three camshaft position sensors in the past two years and a day later the code reappears. idles rough and horrible fuel mileage.

3: changed spark plugs. ac delco iridium

4: fuel pump pressure gauge reads at 55psi when idling, stomp on the accelerator and it falls to about 10

5: changed 2 fuel pumps in the past week. no difference.

6: thought it might be a clogged cat converter, unscrewed the cat assembly from the exhaust, still bogs out.

7: had a mechanic test the injectors, said all were working properly.

and thats where im at. any help would be greatly appreciated