Engine stalls while driving?

Your problem sounds like one I had on my 2003 gmc.I took it to shop and they put it on machine and it said all was fine(see even diagnostics can`t detect all problems). They told me it was either throttle body or fuel sensor switch(which on gmc is all one unit)I replaced throttle body and that fixed my problem also some other problems like hard shifting, surgeing when cruise on and shutting down(controle panel would say reduced power mode)and cut power, stop vehicle shut it off and start back up would run fine for bit then do it all over again.I hope this helps. The tech said that chevy and gmc are bad about this. Bad thing is I think trans shift modual is located in the throttle body($350)

Truck had tune up had 44k or k44 run thru to clean out engine, was told dont think its the fuel pump, but it dies when shifted must keep foot on the gas pedal at all times. If have any ideas let me know

I am currently having the same problem with the same model truck. I have cleaned out the throttle body entirely and put new gaskets. I replaced the throttle position sensor, and I still have that problem. Also changed the fuel filter. My pump is running fine. I have no clue so far, but I guess I'll let you know if I figure it out.

I'm going to try the map sensor next, and if that doesn't work, I'll try the ECM. I'm hoping the map sensor works. You can test to see if you need to replace any of these, but I can't because I don't have the equipment. I'll let you know if the map sensor works tomorrow.

I have a 1990 Chevy silverado K1500 4x4 with 350 tbi. I have same problem its runs rough but stalls out in any gear. I have changed

Idle air control
Throttle posit sensor
Egr
Plugs wires cap rotor
Fuel pump and sending unit(forgot about ground and broke it)
Fuel filter
Fuel injector and fuel pressure regulator
Bought new Map sensor today lets pray. Also bought a good digital multimeter star testing connectors.
DID YOU EVER FIX YOURS?

Same issue here what did your problem end up being? I have changed the TPS sensor, injectors, fuel regulator, plugs, wires, cap, rotor, coil, runs/idles strong but then put into gear and it stalls out. Any ideas would be great thanks. 1990 Chevy Silverado 350 V8 5.0L

Hello this is the exact problem with my brothers 1995 Chevy k 1500 extended cab did anyone ever find out that the problem was if so please let me know its driving me crazy not being able to fix it.

Im stuck. My motor stalls out of nowhere in my truck while driving and ideling randomly. I put a new ground on my battery and checked it, new fuel filter, alternator and catalytic converter. After it stalls the service engine soon light comes on and the motor surges and shifts late if I turn the truck off for awhile and turn it back on the service engine light turns off and the truck runs great. Im going to do the plugs and wires but after that not sure where to go from there. If anybody has any ideas would be much appreciated thankyou.

Ok thanks will try tommorow

Ok I scanned the computer and got a code 24 it says vehical speed sensor or open or short circuit problems it started doing this after I put new ends on my battery cables the alternator wire is spliced maybe that don't know I'm going to recheck everything tonight

Ok truck is still doing the same thing now I have a code 42 im lost says est or a few other things not sure what to do now

I took out the ignition module had it tested and it passed. Im not sure how to test the coil or the pickup coil the truck also started leaking coolant not sure from where all of a sudden dont know if its related. Also I took a look at the knock sensor the wire seemed fine but the wire that y's out to the starter is fried not sure what thats about either Im thinking about putting a whole new distributor, cap and rotor if that does not solve the problem I think im over my head.

My silverado k-1500 z-71 (1995) is shuting down when I put it into gear. It also will stop running if I turn on the lights or turn on the turn signal. I have changed the fuel filter and the injectors are working fine. Does this sound like the fuel pump? The battery is also strong.

1995 Chevy Silverado wants to keep stalling when driving what could this be?

Yes just wants to stall have not got any code reads on it yet just got the truck