Two problems related to engine exhaust system have been reported for the 1999 Suzuki Grand Vitara. The most recently reported issues are listed below.
Rear main seal on engine begins to leak, dripping oil onto chassis crossmembers and exhaust pipes, leaving an oil burning smell. Research has shown most owners encounter this problem with the 1999 Grand Vitara, and that Suzuki has redesigned the rear main seal appropriately, in effect admitting that the original seal is defective.
2. 5l v 6 has two exhaust coming off of it, one on the left and one on the right. Under the vehicle where they joined the two together they only used flex hose,and it burned out and caught fire, after only 30,000 miles. The piece in question also houses a O2 sensor witch has screwed up emmissions and computer. The piece is also more than 400. 00 dollars.