'98 'burb K1500, 5.7 Vortec, 185k miles.
After driving about 30 miles at 60-65, was coming off an on-ramp
pedal-to-the-metal in "high" range on the trannie, and found
myself doing 38 mph with the engine at about 3,000 RPMs.
Backed off the throttle, nursed it up to sixty.
Tried giving it more throttle a few times and got similar
results: engine seemed tb missing, RPMs rose, but no more speed.
It even choked enough to lose speed sometimes.
Backing off and carefully re-applying lesser amounts of throttle
would get it back up to a higher speed.
Limped home, popped the hood while the engine was idling to look
for sparks and listen for noises; engine died after a couple of
minutes at idle.
Let it sit overnight before turning it over to a shop.
Shop ran it 20+ miles with a computer plugged in, but couldn't
provoke the problem or find anything abnormal.
Changed out the fuel filter just on GPs, said the filter was a
little clogged, but not enough tb a problem.
Fuel pump has been noisy last few months, but they said fuel
pressure is OK.
The mystery seems to be why it never threw any kind of code.
Anybody have some thoughts?