Truck shakes and then shuts off. is this a bad fuel pump?

what the description says. truck isn't overheating and it only did it when i was stopped.

 

Start by checking the ignition, fuel pressure, look for broken vaccuum lines, etc.
When was the last tune-up and fuel filter done?

 

i had the same problem once... turned out to be a dirty MAF sensor...

pulled it out, cleaned it with CRC, slapped it back on, and the problem went away...

as for fuel pump, mine went out a couple weeks ago... when it did, the motor just cut out in traffic and wouldn't start again... no sputtering, no warning... just shorted out and died...

as for the MAF sensor, use this stuff...