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2019-2023 Silverado & Sierra Troubleshooting
A central location to report any issues or asking for help troubleshooting any problems with your 2019/2020/2021/2022/2023 Chevrolet Silverado or GMC Sierra. Also recall announcements and Technical Service Bulletins (TSB).
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3.0 Duramax engine temp erratic going all the way up to redline 260 degrees, heater blowing cold air
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