Why is my car's CHECK ENGINE LAMP on?

What fuse are you pulling ?

Hazard Lamps
The hazard warning switch is part of the turn signal switch. The turn signal switch receives battery voltage at all times through the HAZARD SWITCH Fuse. When the hazard switch is placed in the HAZARD position, battery voltage is applied to the hazard lamp/turn signal lamp flasher. The hazard lamp/turn signal lamp flasher sends a turn signal flasher signal to the turn signal switch. The turn signal switch provides all of the turn lamps and turn indicators with the turn signal flasher signal, simultaneously flashing them on and off.

Turn Signal Lamps
The front turn signal lamps are made up of the front park/turn signal lamps and rear turn signal lamps. The front turn signal lamps flash with the rear turn signal lamps when a turn is initiated using the turn signal/multifunction lever. The turn signals will operate only with the ignition switch in the RUN position and will not operate during hazard flasher operation.
When the ignition is turned to the RUN position, battery voltage is supplied to the TURN SIGNAL Fuse. Battery voltage is then applied through the turn signal fuse circuit to the turn signal switch. When the turn signal switch is placed in the LH or RH position, voltage is supplied to the hazard lamp/turn signal lamp flasher. The hazard lamp/turn signal lamp flasher supplies a turn signal flasher signal to the turn signal switch. With the turn signal switch in the LH or RH position the corresponding turn signal indicator, rear turn signal, and front turn signal receive the turn signal switch signal and will flash. The front turn signals receive the turn signal switch signal from the turn signal switch via the BCM. The turn lamps are permanently grounded.

Replace the turn signal switch. Refer to Multifunction, Turn Signal, and Hazard Switch Replacement - On Vehicle in Steering Wheel and Column - Tilt.

Q; Is your service engine lamp on? This vehical has a power steering pressure switch,witch helps your engine maintane idle at parking lot monuvers. its next to your power steering pump.you can check if it works by starting your engine and let it warm up. then without tuching your gas pedal turn your steering wheel slowly , the engine should maintane its idle. if this works and your service eng. soon is not on then try cleaning your throttle plate. A dirty throttle is alot of stalling causes with all vehicals.

MIL Lamp (wrench) --- Malfunction Indicator Lamp

They have been on all vehicles since 1980 some 31 years

OBD1 1980 thru 1995

OBD2 1986 thru 2011

(On Board Diagnostic System) Study that on internet
& read your owners manual

No Manual --Helm.Com

Now you check for codes,have the issues diagnosed &
then repaired

Three step process,thirty years now,nothing new

1. The orange ( check engine lamp) is a telltail for the engine control computer.
2. If the computer determines that there is a problem with an input or an output it sets a trouble code in the computer.
3. To retrieve the code a scan tool must be used.
4. Some parts houses offer to scan the codes for free
5. When you get the code repost your problem with the code.
6. Its possible (but not probable) that a monster audio system could over tax a charging system causing low voltage input to the computer and set a code
7. Cavalier peak alt output should be at least 70 amps
8. Hope this helps
9. Let me know

engine lamp is a telltail that something is wrong in the engine management system. Is the gas cap tight? if so certain parts houses will scan the failure code for free. obtain the code and repost your problem