Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
which security light is on in the dash the theft/security light ?
the stock security system ? or aftermarket ?
ok we have to see if this in fact a security system issue or not
will the engine physically crank over and not fire up ? or the engine will NOT physically crank over at all ?
ok thank you
if the engine will NOT crank over this is NOT a stock security system problem
the security system will only shut off the fuel injectors but the engine should always crank over no matter what
this issue will come down to a battery issue or battery cable connection issues or the starter itself causing this issue
you need to see if it will start with a jump start next
the key readings would only shut off the fuel injectors and NOT cause the engine to not physically crank over
if the battery and cables are clean and tight then the starter is bad or the starter relay is not being told to work which could be a park / neutral switch or ignition switch failure
some tests need to be done next to see which one is the issue
but there is nothing to reset on this truck for it to magically start up there is a failure of the starter or the starter being told to operate
ok the starter needs to be tested and see if the small purple wire at the starter solenoid shows 12 volts on it when holding the key to CRANK if it does and the big power wire at the starter show 12 volts and the BIG ground from the negative battery cable is clean and tight at the front lower of the engine block by the balancer on the lower of the engine block then the starter is bad
No sir...it only disables the fuel supply system.
Thank you for responding!
I feel real confident that that is why it wont crank. But without seeing it myself all i can do is tell you the most common reason for this issue. I hope you can appreciate that because its hard as hell to nail it 100% without being there. Kinda like calling the doctor and saying my back hurts. He can give you possible reasons but would need to examine you to be sure...very same thing with car diagnoses :-)
Best wishes my friend!