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Fig. 595: View Of Engine Block Coolant Plug 1. Add sealer GM P/N 12346004 (Canadian P/N 10953480) to the plug threads. 2. Install the engine block coolant plug. Tighten: Tighten the engine block coolant plug to 50 N.m (37 lb ft). NOTE: Refer to FASTENER NOTICE .
2007 Hummer H3 2007 ENGINE Engine Mechanical - 3.7L - H3
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