This OE part has many issues OE Part No: 24238700
The piston like to crack and cause chatter on take of, slips or no forward.
This upgraded piston is the best money can buy.
GM 6L80/6L90 1-2-3-4 pistons commonly crack due to cantilevered stress on the cast material. The OE part has been through several revisions in an attempt to correct this, but all OE versions are still chronically known to crack. Sonnax 1-2-3-4 piston 104984-01 is made from stronger, billet aluminum and has superior design refinements that add additional strength to prevent breakage and deliver maximum performance.
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