2000 Chev venture. Engine light flashing. codes p0300 p0742.

Question

Started to drive when check engine light started flashing and lack of power, running rough like it was running out of gas. Steadily got worse till it stalled and I had to pull over. Now it won't start. Put gas in was not out of gas.

Answer 1

p0300 is a misfire code, I would start by checking/replacing spark plugs 

 

P0742 Chevrolet - Torque Converter Clutch Circuit Stuck On

you can check/replace tranmission fluid if you have no done it in the last 40k miles 

possible causes:

- Low transmission fluid level
- Dirty transmission fluid
- Faulty torque converter clutch solenoid valve
- Torque converter clutch solenoid valve harness or connectors
- Torque converter clutch solenoid valve circuit is open or shorted
- Transmission internal mechanical problem