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40 amp fuse keeps blowing up in my 2003 Hummer H2 when I go

Customer Question
to turn the ignition switch...
40 amp fuse keeps blowing up in my 2003 Hummer H2 when I go to turn the ignition switch on to start the car what is the reason why it would do that all the sudden
Submitted: 2 years ago.Category: GM
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Answered in 7 hours by:
10/17/2015
GM Mechanic: Gary, GMC Technician replied 2 years ago
Gary
Gary, GMC Technician
Category: GM
Satisfied Customers: 17,506
Experience: 15 years gm master tech/15 years ASE master tech
Verified

is the 40 amp fuse called IGNA or IGNB ?

will it blow when you just turn the key ON or only blow when you turn the key to cranking position to crank the engine ?

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GM Tech (Cam)
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