Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Hi my name is ***** ***** I will be happy to assist with this today.In some cases I may need more info to assist better.I apologize for any delay.
Is the starter engaging to crank over the engine at all with this issue here?
Have you had fault codes checked/read out at all?
Has anything been checked, tested or replaced to try and locate and repair this fault already besides what is listed above?
If you can give me a little more info on exactly what is happening this will help as well here.
Let me know so we can continue,thanks Pete.
I apologize for the delay,Reviewing your info now.
No problem on the phone call.That is an automated feature the web site offers customers.
Is your security light staying on steady or flashing at all on the dash when you try and start and when it will not start you just release the key?It may say security or may be a picture of a car with a lock across it.
Let me know,thanks Pete
Is the padlock light on steady now or flashing at all when you try and start it and when it wont start you just let go of the key?
Did you check to see if you had blown any fuses with this fault here at all?
Let me know,thanks Pete.
O.k.,now if you clear these codes do they come right back again?
Have you tested fuel rail pressure at all?
Your fuel pressure needs to be between 59 and 62 psi.If it is any lower then this then the power and ground need tested at the fuel pump.You need 12 volts on the gray wire and ground on the black wire.The 12 volts will come with key on or cranking over the engine.If you have these signals then the pump needs replaced.If this is all found o.k. let me know.
If I do not reply right away when you respond again I will as soon as I can.
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I apologize for the delay as I was not able to get back here yesterday.
Are codes p0122 and po223 still setting?
Have you tested for spark at at least 3 spark plugs?
Have you tested fuel injector pulses?
Here is the manual relearn
Reset Procedure (Performed after the throttle body is cleaned or replaced) 1. Ignition ON, engine OFF, perform the Idle Learn Reset in Module Setup with a scan tool. 2. Start the engine and monitor the TB Idle Airflow Compensation parameter. The TB Idle Airflow Compensation value should equal 0 percent and the engine should be idling at a normal idle speed. 3. Clear the DTCs and return to the diagnostic that referred you here.
If this does not work let me know.
Let me know if you need anything else and feel free to rate my help here or above ( should be a link to click on ) as this is how I receive credit for my time,this can be done at any time and you can still come back here and reply if needed.Your 5 star rating is appreciated