Isuzu has a new flagship for its fleet of sport utility vehicles for 2003. The Isuzu Ascender replaces the venerable Trooper. Ascender is new for Isuzu, but it isn't a completely new vehicle. Instead, it's a slightly modified version of the Chevrolet TrailBlazer EXT and GMC Envoy XL introduced in the spring of 2002. Ascender appears to be a good deal for both Isuzu dealers and their customers. Isuzu dealers get a proven new product to sell. Isuzu customers get an SUV that's roomier and more powerful than last year's Trooper. Ascender's base price is only $544 more than the Trooper's. Best of all, the Ascender comes with Isuzu's three-year/50,000-mile basic warranty, a new seven-year/75,000-mile roadside assistance program, and seven-year/75,000-mile powertrain coverage. The Chevrolet and GMC versions of the vehicle are covered by a three-year/36,000-mile warranty program. With the introduction of the Ascender, all 2003 models Isuzu sells in the U.S. are built in the U.S.