Diagnostic Aids
WARNING: This page is about a different car, the 2002 Pontiac Firebird and 2002 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
DTC 42 may set due to following conditions: remote transmitter is defective, remote transmitter not programmed to BCM was used, or another remote transmitter was used in immediate area.