The Sierra 1500 came with more than one engine, and they don't all run the same opening temperature. Find your engine below for the exact OE temp, the part, and where to buy it.
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4.3L V6 · 2019-2021LV3
OE opening temperature
OE temperature cross-checked against two independent maker sources (retailer_catalog, gates) · confirmed Jul 2026. This is the factory opening temp, not a hotter or cooler performance variant. Your owner's manual is the final word.
5.3L V8 · 2019-2026L84
OE opening temperature
OE temperature cross-checked against two independent maker sources (retailer_catalog, gates) · confirmed Jul 2026. This is the factory opening temp, not a hotter or cooler performance variant. Your owner's manual is the final word.
6.2L V8 · 2019-2026L87
OE opening temperature
OE temperature cross-checked against two independent maker sources (retailer_catalog, gates) · confirmed Jul 2026. This is the factory opening temp, not a hotter or cooler performance variant. Your owner's manual is the final word.
Opening temperature confirmed against two independent maker sources — never changed by what an affiliate link pays us, and always the OE (factory) temp, never a low- or high-temp performance variant. Your owner's manual is always the final word.
