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Time to come along with Eric O at the SMA shop as he has a look at this 2007 Chevy Silverado 1500. Every light on the dash is on but we are going to focus our efforts on the check engine light. The truck is running really rich and his having problems controlling the fuel pressure. Let's see if we can get to the bottom of this!
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48 thoughts on “Chevy truck – p069e, p0172, p0174 – running rich fpcm trouble”
  1. Avataaar/Circle Created with python_avatars ken ken says:

    I had a throttle body relearn done to fix the constant problem after cleaning it. I think I may have made a mistake I did a fuel composition reset using X431 on my 2011 5.3 flex fuel suburban , currently have e85 in my tank. Now I have 2 code errors p0171-00 and p0174-00 fuel trim lean system lean bank 1 and 2. Did I do something wrong? I would appreciate any help what to do and proceed. Thank you

  2. Avataaar/Circle Created with python_avatars Paul Mann says:

    👍👍

  3. Avataaar/Circle Created with python_avatars BLYFACTOR says:

    How do you determine the Vin engine circuit.

  4. Avataaar/Circle Created with python_avatars MICHIGAN LOADER says:

    Excelente diagnóstico. Tengo un camión silverado 3500hd 2014 y no llega corriente a la bomba de gasolina. Saqué la bomba y esta buena. No se por donde buscar. Alguna idea?

  5. Avataaar/Circle Created with python_avatars Medbull says:

    Great job diagnosing worked with a few guys that just throw parts at it

  6. Avataaar/Circle Created with python_avatars nestor sevilla says:

    I tought the problem was because the master cylinder reservoir was low

  7. Avataaar/Circle Created with python_avatars Matt Mihalich says:

    Have an identical problem on my 07 1500. Do you know anything about the pre programmed FPCM’s?

  8. Avataaar/Circle Created with python_avatars Nathan Carlson says:

    What was the software/electronic manual you were using to find out where the wire went.  Thank you for the video.  Awesome detail and great data.

  9. Avataaar/Circle Created with python_avatars Will Wild says:

    I call this my variable resistor LMAO classic

  10. Avataaar/Circle Created with python_avatars My channel says:

    Hi, always love watching your videos. You work on a lot of silverados like my truck. I heard you say NY. Are you close to Buffalo, NY? I would be happy to bring my truck to your shop if you are close enough. Thank you

  11. Avataaar/Circle Created with python_avatars Michael Theis says:

    Another great video Eric that I will keep in my library to repair my truck someday. You do a great job.

  12. Avataaar/Circle Created with python_avatars Don Berry says:

    My 04 has 5.3 and the left 4 cyl are rich enough to miss and the right side is normal. 02 all 4 work. Puzzling.

  13. Avataaar/Circle Created with python_avatars Hola! TheJayscar says:

    My 2008 impala flex fuel reads 68% ethanol, and has a rich condition code, what would cause this when I know that percentage is incorrect?

  14. Avataaar/Circle Created with python_avatars gto 55 says:

    Congrats on 50k subscribers!!! thanks for sharing your knowledge.

  15. Avataaar/Circle Created with python_avatars hightttech says:

    That was a very nice troubleshoot. Bravo! A lot of shops would have a wagon load of parts and no results due to that sneaky module (poor customers).

  16. Avataaar/Circle Created with python_avatars blaser51 says:

    How blessed you are to have your (Nuclear family to wrench w/you) so to speak!!!!

  17. Avataaar/Circle Created with python_avatars Duncan Mac says:

    Thanks for the video.

  18. Avataaar/Circle Created with python_avatars george gonzalez says:

    Good job. Just one minor issue…. were you really checking the cable ground ? Looked like you connected your factory load bank to the truck frame. Otherwise I'm a big fan of using light bulbs as current testers and stand ins for fuses.

  19. Avataaar/Circle Created with python_avatars Curtis Hatch says:

    You know why they call those buckets don't you? Because when you stand on them they'll Buck you off every time.

  20. Avataaar/Circle Created with python_avatars San Juan says:

    How precisely do you hook those bulbs for different loads test, for us self taught mechanics it's an invaluable tool, thank you kind sir.

  21. Avataaar/Circle Created with python_avatars Kevin Baugh says:

    Which site you get your wire diagrams from?

  22. Avataaar/Circle Created with python_avatars PaqueSepas says:

    Hey Eric any idea why my fuel pressure shoots up at idle to 59 instead of the normal 43psi like this truck and gives me a flashing rich p0300? I get open loop fault when pressure goes high. Could it be this module or the ecm sending that command? Thanks love your videos.

  23. Avataaar/Circle Created with python_avatars 803brando says:

    i have a 2011 flexfuel that throws a fuel trim code when its switching between V4 and V8 .

  24. Avataaar/Circle Created with python_avatars spelunkerd says:

    Ha ha, a practical substitute for a LoadPro! I actually like yours better because you know exactly what's in the circuit and how it is working.

  25. Avataaar/Circle Created with python_avatars Geo Jor says:

    thanks for your efforts …

  26. Avataaar/Circle Created with python_avatars LivingMaga says:

    i hope Jasper is just a sponsor because there remans blow from past experience. i rather use oem remans personal and better warranty to boot. thanks for another good vlog man

  27. Avataaar/Circle Created with python_avatars Dan leiner says:

    I have a 04 Silverado 1500 with the P0172, 175 codes, aside for the FPCM you know of any common triggers for these codes. After watching this vid I checked the fuel pressure on the fuel rail and was getting around 60psi. Could the fuel pressure sensor be bad even though I have the correct pressure at the engine?

  28. Avataaar/Circle Created with python_avatars 73 SUPERGLIDE says:

    ERIC looking in too buy a modis what your thought is worth buying

  29. Avataaar/Circle Created with python_avatars Aquiles esquivel madrazo says:

    marking is your logic probe? ?

  30. Avataaar/Circle Created with python_avatars webslinger2011 says:

    Love that load pro. Lol

  31. Avataaar/Circle Created with python_avatars chris salas says:

    Eric,what is the test light you are using?

  32. Avataaar/Circle Created with python_avatars MaxxTech85 says:

    "variable resistor" lol

  33. Avataaar/Circle Created with python_avatars 12vgs8606 says:

    What if this module was programmed wrong by the last guy? Why not try to program this first before ordering a new one? May be this was wrongly programmed to take the 12V FP sensor and convert in to 5V signal to the ECM.

  34. Avataaar/Circle Created with python_avatars Tyler Boespflug says:

    Your variable resistor comment made me crack up. Going to need to pick one up the next time I'm at the salvage yard.

  35. Avataaar/Circle Created with python_avatars Robert Brown says:

    Truly enjoy every video I have seen… especially when you say… here's your problem lady… cracks me up every time

  36. Avataaar/Circle Created with python_avatars Ron Price says:

    I have seen these fail on two occasions both times the truck would not run.

  37. Avataaar/Circle Created with python_avatars Tom Dudley says:

    Great video on the repair. I like how you were able to do the ECU flashing in house.

    How many hours did you charge for the diag and repair?

    Thought I was gonna get to see the Autel do some ECU flashing. Still a awesome video.

  38. Avataaar/Circle Created with python_avatars RickJane4 says:

    Manufactures always using tech to keep repair shops out of loop .

  39. Avataaar/Circle Created with python_avatars Big Dog50001 Automotive says:

    Is that the new Load Pro 5000????? 😉

  40. Avataaar/Circle Created with python_avatars HCFX says:

    Damn that truck looks like it's had quite the life. Lots of miles on it I presume?

  41. Avataaar/Circle Created with python_avatars Colin Trout says:

    Nice video,Anyway you could make a in depth oil change video soon, any special techniques you use at your shop thanks, love watching these repairs learned so much

  42. Avataaar/Circle Created with python_avatars JOGO says:

    Nice diagnosis, always looking forward to your next video..

  43. Avataaar/Circle Created with python_avatars Do one says:

    Excellent diagnostics – why on earth would gm put the module under the truck