2003 Chevrolet Monte Carlo Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2003 Chevrolet Monte Carlo
Verified by mechanics, reported by drivers like you
Ask a mechanic in our community
Never overpay. Check prices with our estimator
Our experts translate recalls into plain English
2003 Chevrolet Monte Carlo ProblemsStalling Due to Mass Air Flow or Crankshaft Position Sensor Failure
The mass air flow or crankshaft position sensor may fail causing the engine to intermittently stall. It may be necessary for the engine to cool down before it will restart.
The engine may start and stall with the security light flashing. This is commonly caused by a failed passlock sensor which is part of the ignition lock cylinder. A secondary cause could be the ignition switch itself. Worn contacts inside the ignition switch can cause voltage drop issues which can affect the passlock system. Proper diagnoses should be performed before replacing any parts.
The intake manifold gasket may develop and external engine oil or coolant leak. In some cases, an internal coolant leak may occur causing coolant to mix with the engine oil. Our technicians tell us that operating the engine with a coolant/oil mix can result in internal engine damage. Replacing the intake manifold gasket should correct these leaks.
2003 Chevrolet Monte Carlo Questionspower windows keep breaking (1 answer)
power widows/ motor keeps breaking.
On both sides, have replaced 4 times and just went out again on drivers side.. it is hard for me to believe I have the only 2003 monte carlo with this problem. Get back to me as soon as possible. Thank you, Mrs. Johnson
2003 Chevrolet Monte Carlo RecallsEngine Oil Leaks Onto Exhaust Manifold
Engine oil can leak onto the exhaust manifold, causing a fire hazard. This concern was addressed in previous recall notifications, but improvements to the repair have been made. Dealers will make improved repairs free of charge to resolve the concern.
Excess weight on the key ring can cause the ignition switch to move out of the run position without warning, turning off the engine. This defect can also affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring. Dealers will provide two replacement key rings and key cover on all ignition keys to correct this concern.