Security problem? There is a fuel pump relay and fuel module as well as the fuel pump.
If you see the security light flashing, follow Gene's advice. If not, there are LOTS of reasons why an engine won't start. It's just diagnostics, and begin with trouble codes.
Is there a fuse or a relay making my truck not wanting to start
2009 GMC Sierra 1500 Work Truck
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Maintenance & Repair
Will turn over but wont start
1998 GMC Sierra 1500 C1500 SL Standard Cab SB
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Maintenance & Repair
The battery on my truck was dead so I replaced it but once the new battery was installed the engine still won't turn over. The lights come on and the truck has power, just won't turn over the engi...
2013 GMC Sierra 1500 SLE Ext. Cab
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Maintenance & Repair
What would cause my truck to not start on an infrequent basis? I have had this problem for some time. It will go sometimes as lonng as four months with out a hitch, then all of a sudden, it acts like ...
1994 GMC Sierra 1500 K1500 SLE 4WD Extended Cab SB
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Maintenance & Repair
The solenoid will click when trying to start the truck.The entire electrical system is on but the starter will not engage. Alternator, all cables and wires from battery and fusible link have been chan...
GMC Sierra 1500
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Maintenance & Repair
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