has anyone seen this one yet: the check engine light on my 1994 rodeo V6 often times comes on if i exceed 75 mph, but turns off once i slow down. i want to take this to autozone to see if they can read the code for me, but will the code still be stored once i get to autozone being that the light will most likely be turned off once i get there? has anyone heard of this with these trucks? any help would be appreciated.