2015 CHEV TAHOE 5.3L, MAF DTC'S & P0172/P0175 FUEL TRIM RICH ON BOTH BANKS (PART I)
Well guys I make multiple mistakes and mispoke in this, but no editing, and the truck is fixed and long gone, so I ain't too worried about it 🤣🤣🤣👌...End game...hopefully this helps somebody out there, if it does, well then it's worth it right?
Key here is to see TRIM numbers back to 0 or close to it! The MAF gm/sec pid does ALOT of updating and normalizes once engine is fully up to temp and you drive her for awhile...keep this in mind before rushing to conclusions...truck has been gone for well over a month now and I work with the gal who owns it so👍...IT IS FIXED!!!
Parts, Repairs, & Reset Procedures:
1. GM HIGH PRESSURE FUEL PUMP
2. GM HIGH PRESSURE FUEL PUMP SUPPLY LINE TO INJECTION RAIL
3. GM LOW PRESSURE FEED SUPPLY HOSE/LINE TO HIGH PRESSURE FUEL PUMP
4. GM INTAKE MANIFOLD GASKET SET
5. LOF (0W20 FULL SYNTHETIC)
6. GM MAF SENSOR
7. CLEARED DTC'S
8. RESET FUEL TRIM LEARN
9. ELECTRONIC THROTTLE BODY CLEANING & IDLE RELEARN PROCEDURE
10. CKP VARIATION RELEARN PROCEDURE
11. COMPLETED DRIVE CYCLE TO CONFIRM REPAIRS
12. RECHECKED DATA TO LEARN FROM IT
Thanks for watching and be sure to watch both parts before you get carried away 🤣🤣🤣👌!
Part II: • 2015 CHEV TAHOE 5.3L, ...
Пікірлер: 29
Well guys I make multiple mistakes and mispoke in this, but no editing, and the truck is fixed and long gone, so I ain't too worried about it 🤣🤣🤣👌...End game...hopefully this helps somebody out there, if it does, well then it's worth it right?
I still get a kick out of watching graphs in action. They really do tell a story. Ah yes, the all important TSB. See you for part two.
I like to thank you for this video, i just went threw the same thing on a 2014 and i did just what you said to do and that was it,again thank you
Just had a truck come in with this issue. I'm going to check out these conditions. Thank you!
QUICK-WITTED Pauly's Auto
Hey my 2015 Yukon 5.3 is having similar readings with codes p0172 p0175, my stft on both banks is around -3 and ltft is -30 on both banks , if I unplug both pcv tubes stft will fluctuate to 0 to 4 and long term dropped to -20, And Map reading was 3.7-4 and with pcv hoses off it was 3, this was all with the truck up to temp, just wondering if you think this would be an indicator of the hpfp leaking ?
What TSB #?
You didn't plug your air box after pulling breather tubes so MAF readings are obviously going to be off as well as trims
What was the problem?
First!
I m a kid
The problem is it's just a Chevrolet, point blank