Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Honestly you'll need a scan tool to check for codes because the engine control module determine when to turn the pump on. When it turn it on it will only run for a maximum of 2 minutes before shutting off the. You'll have to turn the key off then back on to start it again. If it detect a weak batter or faults in the supply pump it will shut it down until it's fixed. I hope this helps, replace give a positive rating and reply back anyone questions. Thanks
Thanks for the info. The last thing you will need is a scan tool that show engine control module data to see if when the key is turned on does the ECM see the ignition switch status showing on or run position, if it don't you need to look at an ignition switch, if it shows the correct position look in the data to see if it's commanding the relay on, if it is but you have no power to the fuse then you have a wiring problem from the ecm to the relay, if it's not turning on the replay you need a new exam.
Sorry but at the end of that last sentence I mean a new ECM not exam.