went back to dealer, took for test drive maf code came up and both downflow o2 sensors codes came on.Replaced maf with new one, took for test drive, no codes, lots of pick up.On way back heard noise, from bottom end,put on lift and found cracked flywheel. New maf special 279.00, flywheel 278.00 (680.00 if manual trans.)and 500.00 labor, down highway like hell PRICELESS!!!!!

 

well it wasn't the fly wheel. The problem is a spun rear engine bearing. After considering all solutions, I'm going to have the engined pulled and machine the crank $1500.00. Just hope I caught in time not to any other damage. Since I'm pulling any ways can anyone tell me the best plugs and wires to get, Bosche, AC . I was thinking about buying another Blazer, and use my 98 for parts, it only has 100,418 km on it so I decided to just fix it.