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GM LS1 Engine
Posted to Technical Discussion Forum on 10/26/2023 23 Replies

I have had two Pontiac Trans Ams in, in the past month for service, 2001 and 2002, both with the LS1 engine, both with oil in the coolant reservoir, the hose to the reservoir swollen, and radiator cap seals swollen. I am not seeing any permeation through the o... Login to read more.

23 Replies Received (View Replies)