I have a 97 GMC Sierra 1500 5.7L 4-wheel drive truck. I was driving when the engine cut off completely. Any advice? Thank you very much for your time.

Thank you Hector i will give it a shot with options 1 and 2. I forgot to mention that I sprayed starting fluid into intake. No luck. Engine turned but did not engage. Thank you for your time!

Definitely check for spark...As far as I know, those 5.7's in the trucks are simple Throttle Body Injection, old-school dizzy/cap/rotor & ignition coil....And Electric Fuel Pump running low pressures to the Injector(s) setup...similar to carb psi numbers, maybe a tad higher. Guessing 10- 12psi ish...

i have no spark, just checked

Some of those engines have cranck sensor and a camshaft sensor it may be one of them

on the distributor, u have to make sure that its getting a pick up signal from engine cranking, i did a full tune up on my boat and the actual disb. had to be replaced broke the actual rotater piece inside the main body. after replacement it fired right up, it was a 95 350 (obviously marine motor but similar things can happen)

Not sure exactly what kind of EFI your engine has, Im guessing its the TBI 5.7... If it has an external ignition coil, I'd check that first...You dont know the engine designation do you? Like LT1, L69, etc? Also, you said the rotor turns...you did mean that it turns only when someone is cranking the engine over right... Because it's not supposed to be spun freely by hand, rotationally...

i changed the ignition coil today, which is external. no spark, no start. did some tests on the system with a meter and a simple led light, the guy helping me says its the ignition control module next to the coil. is this possible??? i have been told it could be what you all mentioned by other mechanic friends: crankshaft position sensor. don't know if this truck has camshaft position sensor.

distributor looks fine, the rotor does not turn freely, only when engine cranks does it turn. i got this info off wikipedia: The Vortec 5700 L31 (Vin code 8th digit "R") is a V8 truck engine. Displacement is 5.7 L. It is the last production Generation I small-block from Chevrolet. The Vortec 5700 produces 255 hp (190 kW) to 350 hp (261 kW) at 4600 rpm and 330 lb·ft (447 N·m) to 350 lb·ft (475 N·m) of torque at 2800 rpm.

It's your ignition module if there is no spark after all that you replaced

I have a 1997 gmc truck and it back fired and die won't start

Wen i was driven it down the road can some one help me

How can I change water plug truck gmc sierras 1997

97 vortec truck must have 55 psi fuel pressure or it won't start period. Wire plug to crank positioning sensor also goes bad, and plug to coil goes buy new plugs solder the wires together when you replace plugs. Check coil wires all the way to ecm they sometimes melt together in harness..I have all stock ignition and sfi running 11 to 1 comp 383 440 HP 17 mpg.

ignition module went bad, I have a new fuel pump in it.

It has a cam sensor under the distributor cap

Did you ever figure it out?