One problem related to oil pump has been reported for the 2003 Chevrolet Suburban. The most recently reported issues are listed below.
Oil pump failure with only 5,000 miles on engine. Gm wants to extend warranty and leave it at that. With no oil circulation internal engine damage possible and reliability/safety/trustworthiness of engine in question. Want gm to replace motor but they want me just accept extended warranty and go away. As a consumer I believe that I should not have to accept the risk of further engine failure and want a replacement based on substantial impairment and value impairment as well as substantial loss of use (been in repair 18 days since February).