Hello, I have a 2002 Blazer, and I'm looking into if it would be possible to get the speed, rpm, battery voltage, etc information from the OBD-II port?Thanks

 

All of that information is available. You will need a compatible reader to interpret and display the information.

 

Alright cool, so something like this could read the info fine? http://store.cutedigi.com/super-mini-elm327-bluetooth-obd2-v1-5-car-diagnostic-interface/

 

That should be able to read the information. I have never heard of the manufacturer. My Scantool.net OBDLink MX works great and I haven't heard many bad reviews for them, but it isn't a budget reader. They used to have a reader for ~$30, but I don't see it anymore.

 

Alright thanks that's what I needed to know!