One problem related to service engine light on has been reported for the 2003 Buick Rendezvous. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Buick Rendezvous based on all problems reported for the 2003 Rendezvous.
While driving on highway, car bucks, service engine light comes on. . . . Either flashing or solid. 1) cylinder bolt on rocker #3 pulled out 01/29/2009; 2) lifters for cylinder #1 collapsed 02/25/2009. Today (04/28/2010) car is back in shop. Driving on highway last night, same symptom. Dealer offered tentative diagnosis of pulled rocker arm in rear of engine.