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- Fri Aug 14, 2020 6:43 am
- Forum: Engine/Transmision Mechanical
- Topic: vortec 6.2L big trouble
- Replies: 0
- Views: 3821
vortec 6.2L big trouble
Last month the check engine light on my sierra came on, I took the truck to a mechanic. He ran a diagnostic check which showed that the knock sensors were bad. He reset the light and it stayed off for about 50 miles but came back on after hard acceleration. I replaced both knock sensors and the harn...