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My Z71 starting problem is if the truck is cold it starts immediately but if it is hot it will turn 10 or 15 times before it starts. I have replaced injectors, crank sensor, fuel pump, knock sensors, mass airflow , o2 sensor. It all started when i replaced the injectors. It also is showing code p0174. Cannot figure it out. thanks
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That code is showing a lean condition on bank 2 and when an engine is cold the parts contract but when it gets hot it expands and that could be a vacuum leak. If you removed any of the intake system or parts that are attached, they may now be causing your problem. Could also be a map sensor. If you also get a p0171 then it is more than likely an intake leak.
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