We have a John Deere peg perego gator that was working fine last summer and this summer will not even start at all. The battery is charged. Any suggestions?

SOURCE: do I need to replace all tires on peg perego john deere

Hi!
On these, only the 2 rear wheels are the gear wheels. You will just need to replace the tires on those with the rubber ones if you choose to go that way.  Good luck!

SOURCE: old john deere gator and battery new charger still will not move

Could be several things.  Your battery could be bad. After not being charged for a while, they do go bad- often. You may want to try a new battery along with your new charger.  You could also have a switch /connection problem. If you get a new battery and it still doesnt work, you may want to check the switches and wiring. It is not uncommon for the switch to go bad especially if it had been stored outside. 

SOURCE: Peg Perego John Deere Gator not working at all

It sounds like you need a pedal switch or it has a loose connection in the wires. It is a specific Peg Perego Switch that will fit under the foot pedal. I have a gator that was doing the same thing so i replaced the shifter switches and the foot pedal switch, but I bet you could start with just the foot pedal switch.
I bought mine at this website http://www.shopjandl.com/kids---baby-ride-on-toys-peg-perego.html but you could also call them as well.
Hope this helps

SOURCE: peg perego gator grinding noise?

The Peg Perego Gearbox is the item that would make a clicking noise or grinding noise.
There are two different types.
One is a cross shape and another is a pentagon shape.
If you contact the folks at http://www.shopjandl.com/ they will be able to tell you what type you need. I get all my parts from them because they help me figure the problems out.
Hope this helps

SOURCE: John Deere Gator not responding with new battery.

I upgraded my Peg Perego shifter and it came with the wiring harness.
I bought it at http://www.shopjandl.com/
Hope this helps.