Car Codes

[Silver Jimmy]

Im new to the forum. I learned of it form my freind who posts for his neon. he was telling me about how he checked his cars computer and change pre-set setting by turning his key so many times and flipping his lights on or off. i was wondering if this is possible with my 97 slt jimmy. Thanx for any help.

Silver Jimmy

[Teaman3]

All Settings bar fuel ratio are hardcoded. The only setting flipping the ignition on and off might change is the IAC valve position. Not much sense in that.