Question about 2002 GMC Yukon XL
Equipped truck with remote start/ custom security system. noticed about a month now that it sometimes wont crank on first two tries wether by remote start or by manually turning the key. had to jump start on couple times. recently while driving it completely shuts down. dash board lights up- traction on/off, security flashes, abs, low fuel, shift selection gone, parking brake and more. i ckecked fuse compartment left of steering wheel and found no blown fuse. i checked fuse box under hood and found ECM1 FUSE blown. i changed it and truck fires up fine. i drive home. next morning i had to jump start battery which fires up on first crank. truck drives for about 4 miles and shuts off. check for blown fuse, ECM1 is blown however this time upon changing the fuse and crankiing the vehicle the fuse just keep getting blown. i went through 5 fuse. my fuel pump will not prime when i turn the key to on. i took out the fuel pump relay, try cranking/ turning the key to on to prime fuel pump and this time the ECM1 fuse stays in tact. got new battery still no good.
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