I had same problem, the origanl owner replaced the fuel pump and when reinstalling the gas tank they had wires wedged in between the tank and frame shorting it out...also i had wires that went over the dip stick for my tranny fluid shorting out on it... check that first you never know dont take much to short a wire out...
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Re: gmc 1500 savana 6cyl
Relays get hot and thats normal but the fuse burning might be caused by a defective 02 sensor or oxigen sensor disconect sensors and see if keeps blowing the fuse
other cause of burning fuse might be injectors but if you had a mufler or exaust repair latetly most likelly 02 sensor is shorting
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Did you check the crankshaft position sensor ! This get's power from ENG.1 fuse 20amp in under hood fuse box . What engine does yours have 4.3 L ? Eng.1 fuse powers up the crank sensor like I already said but it also powers up the oxygen sensors ,mass air flow sensor , evaporative purge solenoid , evaporative vent solenoid . I don't want you to think I'm talking down to you or anything like that but Do you know what each of these parts are that I listed ? One of these is shorted somewhere ,check the wiring for the O2 sensors , they live close to exhaust pipes an manifolds .I have seen the wiring for them melted on manifolds etc.. Take hold of the wiring harness a wiggle it in different spots with it running see if stops running ! I know you would like a little more of a definitive answer but with problems like this you need to take a good look at the wiring ! Good luck hope this helps !
what does it drive - search for some shortcut/ burnt device, wear on cable insulation through 20 amps do not blow without reason. Maybe badly connected engine mass connection - check battery connections to start with
May I ask how long since the last oil change? 2 quarts low is some serious oil loss. You are going to have to do some basic troubleshooting. Start by checking for blown fuses. Next, check to see if you are getting spark to the spark plugs. If you're getting spark, then check for fuel delivery. Do this by cranking the engine with the starter for a few seconds. Then pull one spark plug and see if it is wet with fuel. Let me know what you find and we will go from there. Good luck.
on that particulaR FUSE i will recomend you to go to autozone.com and you can buy all the repair information there including wiring diagrams, and it will tell you what is that fuse specific feeding just go to the autozone.com and look for alldata