I have a 2003 GMC Seirra 1500 with a 5.3 lit. engine 205,000 miles. When starting the truck in the morning, it starts right up then when I get back in it to leave 5 minutes later it will turn over few times and start or sometimes not, but right after that I can turn the key to start it and it starts ritght up. It seems to follow this pattern overtime. The has been replaced with a new starter twice with the same results.I replaced it with a brand new Carquest stater from Advance Auto not a OEM stater.The fuel pump is good. Could it be the switch or does the starter need too be shim?Thanks Ricko12. Merry Christmas!!!
I think we need to clarify a few things so we are not misunderstood. In my opinion your experiencing a NO START situation not a starter malfunction. The starter's only job is to revolve the engine (Crank) to make fuel/air and compression start the engine.
Now in the morning you start your truck and it starts normally then you go somewhere is that right?...not come back 5 minites later and then start or try to start the truck once more....am I getting that right ?
Yeah, like drive to the store a couple of miles down the road, Get back in the truck and try too start it and turns over a few times and startes,but it use too starts right up when you barely turn the key on. It is worse when it is real hot outside like in the 90's
Thanks for clarification. Does your truck start each and everytime when its has not been driven for a while like hours from when you last drove it ?
yes
To me a suggestion is that the injector is leaking and it makes it hard to start. To check that you should step on the throttle all THE WAY to the floor to clear flood and see if the engine starts. OTHERWISE if it does notWe then go the other way and spray some starter fluid in the intake to see if it lacks fuel...If that does not work then its to the ignition and why it is not working. Its one or the other.
Try this: when your truck does not start, push down the gas pedal all way and start the car. If the car runs then, Change your injectors.
