LBZ: Random stalling, various codes, servicebreak system...

snyracing14

New member
Feb 28, 2014
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hello everyone,

i have a,
2007 GMC 2500hd classic (lbz)
60k miles
EFIlive

about 2 weeks ago, while driving my truck randomly stalled out, no sputter, just died. i still had power to everything (lights, dash, gauges, radio....).Truck then would not restart, would not crank, no solenoid click. after about 5 minutes it started up and ran fine. once it started "service break system" came up on the message display,along with ABS light and break light.

3 miles down the road it stalled again,"service break system" was still present.

then 2 weeks go by, yesterday, the truck stalled about 7 times in 20 minutes. "service break system" has been on for the past 2 weeks and is still currently on (with ABS light and break light)

with the truck stalling every 5-10 minuets, it will throw a code every 3-4 stalls.
Codes include: (not all at one time, codes appear to be random and dont always repeat)

P0700
U0100U1016P2510

Also to add to the mix, the tach and speedo will at random times stop working and fall to 0. then, shortly after, the truck will stall.

When it stalls it sometimes fires right back up, other times im sitting on the side of the road for 2-10 minutes.

Snap-on scanner shows that "service break system" is for rear speed sensor. i replaced the sensor but that did not fix anything. then, according to alldata, my EBCM was not working. so i replaced that, and still no fix.

i have searched all around the internet, i have checked my batteries, ground wires off the block, fuses, plugs, even tested continuity between ground pins on TCM. and i still cannot figure out this problem.
any help would be greatly appreciated!!