Hi. I scanned my 89 Firebird and the scanner tells me that the car is in High GEar even though I had it in reverse. I guess that probably the 4th gear switch is bad but I don t know where that one is mounted. I would highly appreciate any advice.

 

It's on the drivers side rear corner of the valve body, inside the pan.

 

Thanks a lot. You guys are really good at it.