2003 Pontiac Sunfire Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2003 Pontiac Sunfire
Verified by mechanics, reported by drivers like you
Ask a mechanic in our community
Never overpay. Check prices with our estimator
2003 Pontiac Sunfire ProblemsCheck Engine Light Due to Gas Cap Issue
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
The serpentine belt tensioner can fail; it may become noisy and/or the belt may jump off. Replacement of the failed tensioner will be necessary.
2003 Pontiac Sunfire Questionshave a 2003 sunfire with 530,000 miles - running on 3 pistons - is it worth doing a valve job (1 answer)
The shop said the whole dash area has to be replaced to fix the "knob" & I can't find any information about it.
Under the hood?
2003 Pontiac Sunfire RecallsBrake Lights and Turn Signals May Not Work
The brake lights and rear turn signals may stop working due to insufficient contact between the socket and bulb. Inoperative tail lamps may not communicate the driver's intentions, increasing the risk of a crash. If both tail lamps become inoperative, the cruise control will not engage. Dealers will inspect the rear lamp bulb socket assemblies and apply grease or replace them if needed. The recall began January 18, 2005. The GM recall number 04083.