
Need help with GDS2 (GM Diagnostics)
2020 CV515 with 6.6 not-supposed-to-call-it-a-Duramax. Troubleshooting P20BE code for reductant heater #2 (DEF heater of some sort) - This is all quite new to me and most of the guys in the shop as we wade into the CV International badged GM trucks. No problem... Login to read more. ![]()
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