Recent content by JEFFC

  1. J

    2016 temp gauge not working and fans running high speed

    I bought a 16 Silverado 1500 last week with the same symptoms. Live data showed ECT at 130 degrees but that was not hot enough to move the gauge. Also had a code for below temperature threshold. Replace thermostat and problem fixed.
  2. J

    2007 GMC Denali stalls after towing

    Did it fire at all with the ether?
  3. J

    2007 GMC Denali stalls after towing

    Oldtimer, have you tried bleeding fuel off from the fuel rail while the no start problem exist? Did you also wrap the fuel line running to the fuel rail and over the top of trans?
  4. J

    2007 GMC Denali stalls after towing

    Agree with all of what D said above. My problem was the vapor lock issue and wanted to point out that fuel pressure was normal during the no start condition. Don't assume it's not vapor lock just because fuel pressure is normal. Bleed fuel from rail with several key cycles and if it fires up...
  5. J

    2007 GMC Denali stalls after towing

    I would get the pressure test and bleed off figured out before proceeding just to verify that your problem is the same as mine was. I have had several members message me back that this was in fact their problem. Verify by performing the fuel bleed via a few key cycles. No reason to wrap the...
  6. J

    Code for all 4 O2 sensors popping up

    Sorry for the delay, kind of crazy around here with all of the fires. The 30 amp fuse will not stop the circuit from working. The higher than rated fuse could indicate that the previous owner was having a problem with the circuit blowing fuses and tried a larger fuse. The larger fuse could have...
  7. J

    Code for all 4 O2 sensors popping up

    The o2 codes that you have are all for the heater circuit, not the actual sensor circuit (that would be different codes). A bad o2 heater can cause the codes that you have but the chances of all 4 going bad at once is nearly impossible. Do not replace anything until you verify that the heater...
  8. J

    Could a weak battery cause oil pressure indication issues?

    The fact that oil pressure returns after a shut down would indicate a build up of particles at the oil pump pick up tube screen or the oil sender screen. Since both of these are a screen and not a true particle trapping filter, the particles clogging the screen are able to flow away from the...
  9. J

    Mud flaps

    The Weather Tech site only shows flaps for fixed running boards.
  10. J

    2007 GMC Denali stalls after towing

    No, not bad wiring. I really do not know if the fuel is any hotter then it ever was before this started occurring. I have owned it since new and the fuel lines have never been repositioned. My mechanic is convinced that our fuels have been reformulated and this is what caused the issue. No...
  11. J

    Overheating towing with Denali 6.2L - Losing my F'n mind!!

    Agreed, altitude does not contribute to vapor lock on fuel injected systems with the pump in the tank. It could contribute to vapor lock on older fuel systems with the pump at the engine causing vapor lock between the pump and tank.
  12. J

    Overheating towing with Denali 6.2L - Losing my F'n mind!!

    The bottom photo is the fuel injection fuel rail which does need to be wrapped. The fuel line runs from the fuel rail down the backside of the engine and over the transmission and also needs to be wrapped.
  13. J

    Overheating towing with Denali 6.2L - Losing my F'n mind!!

    An easy way to see if the no start when towing is related to vapor lock is to bleed gas off at the fuel rail while cycling the key several times to on several times without starting. (as someone earlier mentioned) The safe way to do it is with a fuel pressure tester so you can bleed the fuel...
  14. J

    2007 GMC Denali stalls after towing

    In response to Jedi33g above post. It really sounds like we have 2 different problems. My problem happened without the engine or transmission being over heated. You did not mention if your Yukon is a Denali, if it is not, you do not have the same engine or transmission as the owners of a 2007...
  15. J

    2007 GMC Denali stalls after towing

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