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Re: Sonoma 4.3 Vortec Intake/Head Gasket Replacement
Strange that we had it for a year and a half and it was fine. Any luck with radiator flush? I used royal purple and blue devil, neither touched it. Friend said to use purple power degreaser.
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72 Cheyenne Super C10 SWB
2001 Silverado 1500HD Crew
2011 Silverado 2500HD Crew Duramax (Hers)
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