The switch and the neutral safety switch are not the problem. A new fuse will hold until I put the transmission into gear and the battery and low fuel lights come on when fuse is blown. The VCM, PCM, engine control and transmission are on the same circuit and the 4WD works if I jump it out at the fuse panel just long enough to switch from 4 to 2 WD
SOURCE: 20amp fuse in black box keeps blowing
dear,
The fuse ecm b it tied to the fuel pump, PCM, and VCM.
Fuel pump could have an internal short
check it by the way...
regards,
SOURCE: shuts off while driving. no fuel pressure. pcm fuse blows/ fuel pump relay inserted.
Sounds like the fuel pump is shorted.
SOURCE: intermittent 4wd on 98 jimmy
the module is what i would suspect. and i do believe it is in the r kick panel. i've seen the button pack on dash go bad too, but module is best bet.
SOURCE: i have a 97 gmc jimmy 4x4. the transmission goes
I need the CODES this year has valve body problems for tcc slipping on these & shift timing need more information
SOURCE: Won't shift out of 4 wheel drive low
modulator stuck or damaged located at transfer case take a rubber mallet and hit around where modulator and case connect than try to shift again if nothing than un bolt and lube and move actuator rod, with out try to move electronically w/switch back to 2 wheel drive -if moves should work can replace but look for replacement as back up if happens again just change over
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