I have a 98 Bonneville and my interior lights won't shut off the only way I can get them off is to pull my power mirrors fuse but the my mirrors don't work so any idea how to fix thanks

I have the same problem. the problem is a bad mall.it was once recalled

ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT CONTROLLER
Recall for 1996 Pontiac Bonneville
Recall Announced
OCTOBER 23 1995
NHTSA Reference
#95V204000
Number Affected
32,869
Summary: These vehicles were assembled with a malfunction alarm, lighting and locking (mall) module that can contain a damaged capacitor. If the capacitor is damaged, the "key in the ignition" warning chime and the driver seat belt unbuckled warning chime and indicator lamp may not work. This does not meet the requirements of FMVSS no. 114, "theft protection" and FMVSS no. 208, "occupant crash protection." In addition, other chime reminder functions, interior lighting controls, and power door locking features are also affected.

Consequence: Consequence of non-compliance; the driver may not be aware that the key was left in the ignition or that the safety belt was not buckled.

Fix: Dealers will inspect and, if required, replace the mall module.

For detailed information & supporting documents, see the official NHTSA page concerning recall #95V204000 »

dont know if this applys to your 98 tho.