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29/08/2022 11:19 am
Topic starter
Dear Scotty.
I have a 2011 Suburban with 155,000 miles.
5.3 engine coupled to a 6L80. I have 2 problems. #1 very low power below 1500 RPM. #2 after every upshift bother the power and RPM drop, this DOESN'T happen in cruise control. Please advise.
1 Answer
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29/08/2022 12:37 pm
When did you last change out your transmission fluid and filter? Should be about every 50K miles for the 6L80E.
