2010 Chevrolet Camaro lighting problems

Tl* the contact owns a 2010 chevrolet camaro. While driving approximately 35 MPH, the odor of burning plastic was present. Two days later, the warning indicator for the exterior lighting illuminated. The vehicle was taken to the dealer (roger dean chevrolet, 101 sw pine island road, cape coral, fl 33991) for diagnostic testing and repairs. The diagnosis was not provided. The manufacturer was notified of the failure. The approximate failure mileage was 74,977.

Vehicle has had a code of p008 intermittently then permanently since 68000 miles, it is now at 99,500 miles. The code relates to timing chain stretching which is causing engine misfire. Same problem with identical engine has been addressed in form of warranty extension for several vehicles, including cadillac cts, extending warranty to 10 years or 120k miles. This has not been done for the camaro for reasons which elude me.