Granite 4x4 3s blx

[justbecause]

Hello all I have a granite 4x4 3s blx
Having trouble with the truck not responding when I push on the throttle.
It comes and goes anyone have any ideas why this is?

 

[bt224]

Check connections and put fresh batteries on the transmitter.

 

[GRC]

- Make sure the throttle trim knob on the transmitter is set to neutral.
- Calibrate your ESC (See "Throttle Setup" in the manual)
- Check that the yellow, orange and blue motor wires are securely connected.

Also, does it happen at very low speeds from a standstill? If you try to start at very low speeds, the Granite can cog, especially if on thick grass or an uphill. A little cogging is normal in the system that comes with the Granite.