Is the check engine light on ?
Have you checked base fuel pressure with a gauge ?
it comes on once in a while a buddy of mine has it he said yesterday that he put a fuel pressure gauge on it and drove it a little bit and it stayed a consistant 10lbs of pressure he put new plugs wires distibutor cap coil a throttle sensor and a couple of other sensors and new in line fuel filter nothing is working when the check engine light comes on it doesnt stay on long
I would check the computer for trouble codes anyway. Could be several things like a leaking EGR valve and so on.
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SOURCE: 1999 Gmc Sierra has no power
Sounds like the fuel supply is inadequate. Check for a plugged fuel filter, or possibly the fuel pump is losing pressure. I had a 93 Chevy V6 that acted the same way, and after checking everything else I replaced the fuel pump, which solved the problem.
SOURCE: 89 GMC Sierra problem
there is an ignition module located rite beside the distributor cap on the distributor base these are well known for getting weak and heating up thus causing your engine to stall.
SOURCE: engine stalls when acceleration
sounds like poss throttle pos sensor prob./ could also be problem w/fuel pump not pumping enough fuel at high speed. poss fuel filter clogging also. have someone check pump pressure.
SOURCE: 99 gmc sierra... seems like the abs is taking over
It sounds like it's the ABS module has gone bad, your going to have to take it to the dealer and have them service it. There are special tools that the average person don't have in there tool box. You can go to Auto Zone and see if there are any DTC codes, but if there are no light on the dash. It may not show any and the dealer will have to test the module. Good luck and hope this helps. keep me posted, be glad to help.
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