Question

My 2002 Chevrolet Silverado 2500hd 8.1L Vortech engine in it stalls then won't start. I get the codes P1514, P0335, and P1779

Answer 1

P1514 (high load nuetral/drive fault)

P0335 Crankshat sensor "A" malfunction

P1779 TCIL circuit malfunction

When you get P1514 The ECM uses the BARO (map sensor) and the MAF (mass air flow) and calculates for proper TPS (throttle position sensor) response.

P1779 This is the torque signal circuit on Allison transmission ,you get this code when the throttle defaults,

The main player of setting off both these code is P0335 The crank position sensor this can be cause by bad connection,running out of fuel, the location is on the back rear ,driverside

Answer 2

P1514 Chevrolet Code - Throttle Actuator Control System Mass Air Flow Performance
Read more: https://www.autocodes.com/p1514_chevrolet.html

P0335 Chevrolet Code - Crankshaft Position Sensor Circuit
Read more: https://www.autocodes.com/p0335_chevrolet.html

P1779 Chevrolet Code - Engine Torque Delivered To TCM Signal
Read more: https://www.autocodes.com/p1779_chevrolet.html