One problem related to engine exhaust system has been reported for the 2004 Lexus GX. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Lexus GX based on all problems reported for the 2004 GX.
A clunking noise happens almost all times when come to a complete stop. My wife reported problem to different dealers and problem has not been resolved excessive odors smell like rear brake pads burned. Reported to different Lexus without being fixed until now. Recently hearing popping noise when air conditioner used. Will report to Lexus dealer next service time.