Truck was running well last fall, Shut it down for the winter and now I get no power. Battery is fully charged, connections and grounds are good but no electricity getting to any accessories. Inside lights don't go on, nothing is happening when I turn the ignition key. All fuses are good. What next?
You may have a dead cell in the battery , or damp in the electrics.
SOURCE: I have a 1996 GMC K2500 power staying on to my heater fan
Hardly seems worth changing the lock cylinder, since it is not that easy.
Just be more careful turning the ignition off.
Put in an ignition indicator light on the dash if you have to.
SOURCE: 95 GMC ignition system doesn't power
check the condition and check for power at the actual ignition switch at the bottom of steering column and the rod from the key switch that engages it. if your lucky the switch may just have come loose, but more often then not, there shot.
SOURCE: Iginition system does not get power
did you check all the fusable links sometimes they dont break all the way maybee check all the grounds on the truck there is one on the back of the head and should be a comp. ground and of course the engine ground from bat. sometimes you have to losen them and retighten to establish a new clean ground
SOURCE: I have a 2001 GMC sonoma 4.3 v6 that will not turn
Try another starter and also try turning the crank bolt with a ratchet and socket to make sure that the crank isn't frozen in place. Do not leave the keys in the car when doing so. You don't want anyone messing around in the truck when trying that!
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