Your vehicle has an OBD2 computer. OBD stands for On Board Diagnostics. If the light is on, that mean there are Trouble Codes stored in the computer. When the computer is scanned, it will identify which codes are stored and from that, you can tell where the problem is coming from, or at least aprox where the problem is.
What you need to do is have the computer scanned to identify what codes are stored. Hopefully, there will be transmission codes that will point us in the right direction. I'm not sure where you are located, but most parts stores will scan the computer for free with hopes to sell you parts. Lol If you can, take the vehicle to a nationally recognized parts store, tell them your check engine light is on, and ask if they would scan it for you and tell you the codes. Once you do that, let me know what you find and it will help me to determine possible causes.
Tuesday, October 8th, 2013 AT 5:08 PM