http://wiki.answers.com/Q/What_could_be_the_problem_when_the_dome_light_for_a_1995_GMC_Sonoma_stays_on_even_when_truck_is_off"
When the dome light stays on in an slk320 one of several things could be causing it. A door switch could be bad, the manual light switch could be stuck, or the light relay could be stuck. Any of these could cause the problem.
changed battery engine light stays on
If your ABS light stays on you have a problem with the ABS and it is not functioning. Until the problem is fixed the light will remain on.
Your alternator is not working.
The check engine light comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, a check engine light is lit when there is a problem in the emissions or somthing that is affecting the effectiveness of the emissions.
When the airbag light stays on it usually means there is a problem with the system.
Have vehicle scanned to determine the problem
If the security light stays on in a 1993 Z28, there could be a problem with the settings for the lights. Sometimes the adjustment knob for the interior lights gets bumped. There is also a possibility that the probe that is in the door hinge area has been broken off.
It tells you the ABS system should be checked if the light stays on while driving. It could also be an electrical problem like the ignition switch.
If you are referring to the Check Engine Light, then there is a problem with the emissions system. Have it looked at by a professional with the tools and knowledge to diagnose the problem.
A problem has been detected with the Anti-lock Brake System It could be a fuse , a sensor , or some other problem As long as the red " BRAKE " light is not on in your dash you still have " normal " brakes
I have a 1998 ford grand Marquis- and the problem is the air suspension light stays on- how to fix this problem