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  1. Richard Blakely

    P0171 Most Common Cause W/O Driveability Issue

    Update to P0171 trouble code. Believe I got it resolved by replacing purge valve. I know code doesn’t point to this but since I replaced it and cleared codes (battery disconnected for 10 minutes), no check engine light and gas mileage is improved, runs great as well.
  2. Richard Blakely

    P0171 Most Common Cause W/O Driveability Issue

    Anyone ever hear of a pcm replacement causing an erroneous P0171 trouble code? Ever since my computer was replaced (for another reason). P0171 shows up with check engine light. Any troubleshooting done by qualified techs have come back with no problem found.
  3. Richard Blakely

    Driver door rattle

    Yea!!!
  4. Richard Blakely

    Driver door rattle

    My suburban had that. Turned out to be a loose bolt holding the electric window motor. There are about 5 bolts. Check them all
  5. Richard Blakely

    07 Tahoe check engine light

    Local mechanic read odbc code. Apparently a more detailed code than Orielly showed. It showed a cylinder misfire on cylinder 5 (5.3l v8). Mechanic found the wire to plug was not on properly. He cleaned and fixed and cleared code. So far no problems. Need to test for 4-5 days to confirm fix
  6. Richard Blakely

    07 Tahoe check engine light

    What is LTFT?
  7. Richard Blakely

    07 Tahoe check engine light

    Correction to above. Mixture too lean not rich. Sorry about that
  8. Richard Blakely

    08 Yukon Denali climate control issue

    This happened on my 12 Tahoe. I found in drivers side headliner, a small round removable vent. Took this out and found some **** that was blocking the area. This was due to a microphone that was installed for new radio. I removed tape and repositioned microphone and replaced cover. AC has...
  9. Richard Blakely

    Climate Control System Temporarily Unresponsive

    This happened on my 12 Tahoe. I found in drivers side headliner, a small round removable vent. Took this out and found some **** that was blocking the area. This was due to a microphone that was installed for new radio. I removed tape and repositioned microphone and replaced cover. AC has...
  10. Richard Blakely

    07 Tahoe check engine light

    Code says mixture too rich on bank 1. Runs ok and have replaced mass airflow, spark plugs and wires, o2 sensors. Air hoses appear to be good. Suspect pcv valve. Any additional items to check?
  11. Richard Blakely

    Vehicle feels like it is going over bumps on slow coast from a dead stop

    In the days of Siri and autocorrect, if a fat finger is done, anything’s possible!
  12. Richard Blakely

    Vehicle feels like it is going over bumps on slow coast from a dead stop

  13. Richard Blakely

    Vehicle feels like it is going over bumps on slow coast from a dead stop

    I have 2 Tahoe’s, sorry!
  14. Richard Blakely

    Vehicle feels like it is going over bumps on slow coast from a dead stop

    I would put money on motor mounts. I have 2 tables that had a bad jerk when going from a stop. Motor mounts solved it
  15. Richard Blakely

    Where are knock sensors on 2012 Chev tahoe?

    Autozone had a repair manual for 2012-2015 (I think) that shows new location of knock sensors
  16. Richard Blakely

    Where are knock sensors on 2012 Chev tahoe?

    I encountered a check engine light with the code pointing to drivers side knock sensor. Found also that it was encountered after filling up with 87 octane after 5 or so fill ups of 93 octane due to sluggishness accelerating. After knock sensor replacement, engine light disappeared and...
  17. Richard Blakely

    Where are knock sensors on 2012 Chev tahoe?

    Knock sensors have changed their positions on the 2012 version of the 5.3l v8. Prior to this year, you have to spend 2 hours and remove 65 bolts to remove the intake manifold to find that the knock sensors aren’t there. After purchasing a repair manual for this year, we found that they are...
  18. Richard Blakely

    Where are knock sensors on 2012 Chev tahoe?

  19. Richard Blakely

    Where are knock sensors on 2012 Chev tahoe?

    Ally tube videos show them to be under intake manifold on prior years 5.3l v8. But not on 2012 version
  20. Richard Blakely

    Ride quality, what does a bad front diff feel like?

    My ‘12 Tahoe had much the same symptoms. Had very abnormal inside tire wear. Mechanic replaced upper and lower ball joints and motor mounts. Now riding smooth
  21. Richard Blakely

    A/C Blowing Hot Air

    Do you find when hot air blows, that if you turn engine completely off (safely, not in freeway traffic), that cold air will then blow? If so? Replace the hot/cold actuator. On my 05 suburban, it was under cowling where passenger’s left leg would be. Good luck!
  22. Richard Blakely

    Hello and annoying rattle on new '20 Suburban

    I had an ‘05 suburban with an annoying rattle like this. Almost made me have to trade in! But, I took off passenger door interior facing, and found a loose bolt on the electric motor mechanism. Tightened it up and voila! Rattle disappeared
  23. Richard Blakely

    2012 Tahoe transmission shifter

    Interesting!! That happened to me before the failure too, With a guy’s trailer that blew a tire in front of me and thought nothing of it until you mentioned your experience.
  24. Richard Blakely

    2012 Tahoe transmission shifter

    Transmission shift cable broke. Comes with 2 cables to replace, one exterior and one interior joined together. Replaced by dealer for $384, bargain as far as I’m concerned!
  25. Richard Blakely

    2012 Tahoe transmission shifter

    Thank you! I was afraid it was a transmission failure. I’ll wait for dealer results!

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