My son received a thunder tumbler remote control stunt truck yesterday, (5/15/11) and it is already broken. My younger son broke the truck where the attena connects, however, I glued that and the truck still receives a signal. However, the rear left wheel won't spin. The right rear wheel spins sporadically. It makes noise and lights up, it just won't move properly anymore.

Type the thunder tumbler in Fixya's search. This is two way radios. There are a LOT of posts on your RC trucks. If new, I suggest you return them.

Use the throttle trim control to try and adjust this unwanted throttle application out. Refer to the user manual on how to trim the remote functions

How do you imagine I might help you to repair a broken remote? It's BROKEN, even if it charges fine.
If you don't have the technical knowledge and can't repair your control yourself, please, take it to a repair service

They are running the same radio frequency signal!

Probably different frequency remote relative to car, same deal with my sons......car and remotes need to be on the same frequency....either 27 or 49

The box shouldn't say "two frequencies for competitive racing." That is misleading.

I just bought a Sonly RM-VLZ620 for about $20 and it works with Olevia.

Make sure your remote is not cracked in tha back because it will not work & make sure tha batteries are put in all tha way

My volume button also broke (actually, the VOLUME UP function stopped working). Rather than trying to get the remote fixed, I found a different solution...
I reprogrammed the + key (bottom left of the remote) to be my new Volume UP function. You can do this by going to any of the activities you've already defined, and adding a custom button to the activity.
Choose the + button (it will probably not have an existing function), and tell it to use the Volume Up function of the component you normally use for volume. In my case, it was the Home Theater Receiver.
I hope that helps.