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 ProblemsRubber Transmission Cooler Lines Can Leak Fluid
An automatic transmission fluid leak may develop from the rubber section of a transmission cooler line. In some cases the rubber section of hose can be replaced. In others, the complete cooler line must be replaced to correct this type of leak.
A door window may move slowly or stop in mid travel due to a failing power window motor. The affected window may start working again after the motor cools off. Replacing the faulty window motor will commonly correct this concern.
The engine vacuum hose to the MAP sensor may crack resulting in a vacuum leak causing the engine to run rough and/or stall.
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.