A friend of mine has this truck and it keeps popping the ECM-B fuse under the hood. The motor is a 5.3 I thought it might be a short so we traced the wires and found nothing. This happens intermittently about every 3 months. Has anyone had this same problem? Any input would be appreciated!
97 GMC, 2002 LS6.
1991 GMC Syclone #1428
the ecm b fuse is used to supply 12 volts to the fuel pump. only time you see this fuse blow is when the pump starts pulling to many amps. tell him to change the fuel pump and replace the filter.
00 RCSB 6.0L, 222/224 CC, C/A, LT'S, PORTED TB, TB CONVERTOR, CUT OUTS, 3.73
12.74 @ 105 n/a
I would check for knicks/shorts in the wiring going to the pump. GM is bad about not protecting the pump wiring harness.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
Thanks for the input guys! I'll let him know.
97 GMC, 2002 LS6.
1991 GMC Syclone #1428
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