2002 chevy silverado 5.3
 

Hi I have a 2002 chevy silverado it has 134,000 miles. I replaced the fuel pump,fuel filter, coolant temp sensor, plugs and wires also the MAF sensor. It will start for about 10 seconds then die.
codes
p0307 misfire cylinder 7
p0446 evap
p0449 evap vent solenoid
p0102 MAF circuit A

Here are some steps to help with your truck:

Cylinder 7 Misfire (P0307): Check the spark plug, wire, and coil for cylinder 7. Make sure they are working. If they are good, check for compression in cylinder 7.

Evap Codes (P0446 and P0449): These codes mean there is a problem with the evap system. Check the evap vent solenoid and hoses for damage or clogs. Replace the solenoid if needed.

MAF Sensor Circuit (P0102): This code can cause the truck to stall. Make sure the MAF sensor is connected properly. Check the wiring and clean the sensor if it is dirty.

Fuel Delivery: Even though you replaced the fuel pump and filter, check the fuel pressure. Low pressure can cause the engine to die after starting.

Start with these checks and fix the most obvious issues first. If the problem continues, let us know what you've tried, and we can help further.