I have heard from some other credible sources that the "questionable" blocks were still in inventory in the Y2K year. Though I will say I have not seen and or heard of a Y2K with a cracked block, and I do know an owner with a Y2K Z coded truck.
Quote:
Originally posted by HUMTECH:
Late 97 GM changed the block design by adding oil squirters to cool the bottom of the pistons but they did not reinforce the block where this was done. late 98 production saw this rectified with reinforcing. 2000 model year trucks would never have seen the bad engine blocks.affected years were 96-98 and some early production 99 MY vehicles.
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