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.
The most common cause on this model for a no start that I have run into several times and had to replace several times is the fuel pump itself.This engine needs a fuel pressure of around 60 psi to start.If it is any lower then usually 58 psi then it will not start and is due to a weak pump.The pump can act up or fail like this here allowing starting the first start of the day or started today then failed and a no start.It can be intermittent in some cases.You can try starting fluid to see if it stumbles or tries to start.If it does then the pump usually needs replaced.
You can also rent a fuel pressure test gauge from a local parts store and thread it onto the fuel rail test port towards the rear of the engine.Turn on the key and should see around 55 to 60 psi.If any lower then the pump needs replaced.
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Unfortunately the pump is most common here.It is possible this is a different component like the ignition coil or ignition module as these can fail and cause no spark but usually it is the pump itself.I hated doing this replacement as well on this model but did over 100 of these due to the common failure of it.
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