Anyone done a 4L80 swap and if so what headers fit and what’d you do about the speedometer??? Looking at doing a full manual so I won’t need any electronics...
Used a jump box to start my 04 today and afterwards the tach doesn’t work, Speedo doesn’t work, check engine light is on, and traction control doesn’t work... tried disconnecting the battery and didn’t see any blown fuses under the dash but it’s dark out and hard to see... any ideas??