How do you reset the anti-theft on a Chevy truck?
In a chevy silverado, you will try to reset the anti-theft system by turning the key on until the yellow lock goes out on the instrument panel for about 10 minutes. Turn the key off and do it 2 more times after 3 cycles, pull the key and put it back in.
How do you reset the PCM on a Chevy truck?
Remove the nut off the negative battery cable with a socket set or wrench. Slide the cable off of the battery and put it aside. Turn the headlight switch to the “on” position to drain the ecm of any remaining power. Wait at least 10 minutes, then turn it back to the “off” position.
How do you reset the anti-theft system on a 2014 Chevy Silverado?
To reset the anti-theft system in the 2014 Chevy Silverado, turn the key in the ignition to the “on” position and attempt to fire the engine. Return to the “on” position. The vehicle will not start if anti-theft has disabled the ignition. After 10 minutes, the flashing “security” warning light should power off.
How do you bypass Chevy anti-theft?
How to Disable a GM Passkey System
- Insert your GM key into the ignition, attempt to start the car, and let it stall. After it stalls, leave the key in the starter in the “On” position.
- Look at the “Theft Sys” light blinking on your dashboard and wait until the light stays on without blinking.
Will ECM cause car not to start?
A bad ECM may lead to a vehicle that won’t or is difficult to start. If the ECM fails completely, it will leave the vehicle without engine management control, and will not start or run as a result. The engine may still crank, but it will not be able to start without the vital inputs from the computer.
What do you do if your truck doesn’t start?
Car Won’t Start – Troubleshooting & How to Fix
- What To Do If Your Car Won’t Start: ⓘ
- Try: Cycling the Key.
- Try: Tapping on the battery Terminals.
- Try: Smacking the starter.
- Try: Shifting the Shifter.
- Try: Swapping Relays.
- Try: Smacking the Fuel Tank.
- Try: Un-flooding a flooded engine.