Diagnostic Aids
WARNING: This page is about a different car, the 2003 Pontiac Sunfire and 2003 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
The sunroof limit switch soft stop signal circuit can cause the sunroof not to respond correctly, if it were an open. Refer to CIRCUIT TESTING and WIRING REPAIRS in Wiring Systems. If the circuits test OK, an intermittent or poor connection can also cause the sunroof not to operate normally. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS in Wiring Systems.