2004 GMC Sierra 1500 4.8L got P0171 and P0174 codes, Changed MAF Sensor, checked fuel pressure 60 psi. I still get P0171 and P0174 codes, and lack of power up hills … read more
Jun 07, 2018 · GMC Terrain 2015-2017 3.6 LFX Cause of P0171, P0174 and check engine light GM has determined that a vacuum leak in the foul air tube, intake manifold or purge valve may be causing the P0171, P0174 condition. Diagnose P0171, P0174
P0171 AND P0174 system too lean in bolt bank GMC 2003 sierra 5.3L. Video duration : 15:47; Video uploaded by : Pete Sambolin Video release date : Apr 16th, 2018
· There may be other very specific (or common) issues that other motorists have experienced with your car. Just Google the codes followed by your car's make and model, for example: "P0171 and P0174 Ford Expedition." As one example, many report that a common cause of the P0171 and P0174 lean mixture fault in the BMW X3 is a faulty DISA valve.
I have 2016 Sierra All Terrain HD that I had deleted a few months ago. 5” Flo Pro, 3” down pipe, S&B intake, EZLynk with Motorops switchable tunes. Right after I picked the truck up on the way home the CEL came on with P026C and P0171. I was told this was because the truck needed a lift pump.
The P0171 code could also be caused may be caused by one or more of the following: debris on MAF sensor causing an incorrect reading, improper oil level, low or high fuel pressure or Engine Control Temperature Sensor reading inaccurate. There is a factory service bulletin for the following GMC models: 2000-2008 GMC Sonoma 2000-2008 GMC Sierra
Oct 01, 2018 · GMC Chevy P0332 P0327 Knock Sensor Circuit Low Input “TSB” October 1, 2018 by Reggie In this video, we are working on a Chevrolet truck that had it stored code p0332 and stored code p0327 for knock sensor circuit low input for Bank 1 and bank 2.
Last week my check engine light came on. I have a Harbor Freight OBD 2 code reader and got the codes P0102/P0171/P0174 on the reader. P0102 was the M.A.F. sensor and was replaced.Erased the codes and test drove approx 30 miles and C.E.L. came back on.Rechecked the codes and P0102 is gone.
Sep 16, 2019 · P0171 and P0174 Codes – Don’t change an Oxygen Sensor Before Reading This Posted on September 16, 2019 by Dan Mechanic • 4 Comments So your car’s CEL (always check Engine Light) is on and also you had the codes scanned at a local parts shop.
Apr 12, 2020 · I have a 2004 Sierra 2500 with a 6.0 vortec. Mainly throws the code p0101 like it says rn. And sometimes will throw p0171 or p0174 but mainly the first one. It happens maybe half the time it will sputter and says it's running lean. I did do a smoke test so no vaccum leaks and I did put a good mass airflow sensor in. New plugs and wires two months ago. As with everyone we all know generic codes ...
An ASE-certified technician walks listeners through an unusual problem on a 2005 GMC Sierra 2500 4WD truck. This tip is brought to you by ALLDATA. ... DTCs P0171 and ...
Jul 06, 2018 · Back when I got the truck in December of 2015, it started throwing both P0171 and P0174 codes right away. Took it back to the dealer and they diagnosed it as a failing intake manifold gasket. Gasket was replaced by dealer at their cost. This was at 136K miles in January of 2016.
Oct 11, 2018 · GM Code P0171 Severity – Moderate It is okay to drive your GM with P0171 for a short period of time, but driving with this code for an extended period of time can overheat the engine and cause internal engine damage. GM Code P0171 Common Diagnosis Mistakes. It is important to complete the entire diagnostic process when diagnosing P0171.
Aug 28, 2011 · Codes P0171 and P0174. This is a discussion on Codes P0171 and P0174 within the External Engine forums, part of the LSx Technical Help Section category; I have these codes which mean I am running lean on bank 1 and bank 2.