The 4L80/4L85E in the C/K 1500/2500(91-99) V8 5.0/5.7/6.0/7.4/6.5D; C/K SILVERADO 1500/2500(00-03) V8 6.0; C/K SILVERADO 2500(00-03) V8 5.7/6.0/7.4/6.5D; C/K SILVERADO 3500(91-03) V8 5.0/5.7/6.0/7.4/8.1/6.5D; SILVERADO/SIERRA 2500/3500(04) V8 6.0; SUBURBAN 1500/2500(95) V8 7.4/6.5D; SUBURBAN 1500(96-04) V8 4.8/5.0/5.3/5.7; SUBURBAN 1500(96-99) V8 6.5D; SUBURBAN 2500(96-04) V8 5.7/6.0/7.4/8.1/6.5D; TAHOE/YUKON(95-03) V8 6.0/8.1/6.5D; VAN 2500(96-03) V6 4.3, V8 4.8/5.7/6.0 8.1/6.6D; VAN 2500(04) V6 4.3, V8 4.8/5.3/6.0; VAN 3500(95-03) V6 4.3, V8 4.8/5.7/6.0/7.4/8.1/6.5D; VAN 3500(04) V8 6.0; The pan has 17 bolts.