DETROIT -- General Motors Corp. is offering a rebate of $1,000 on most 2005 cars and trucks, excluding Cadillac and Hummer. However, it reduced the basic cash rebate on most 2004 cars and trucks by $500.

Customers financing vehicles through GMAC receive additional deals, according to Reuters. Model-year 2005 vehicles financed through GMAC may come with rebates totaling $2,500. Model-year 2004 vehicles are eligible for extra bonus cash of $500 to $1,500. Although bonus cash offers vary by region and vehicle model, customers financing 2004 vehicles through GMAC could receive cash rebates of up to $6,000 total.