Transmission fluid

Asked by GuruC7YGT Mar 11, 2019 at 10:18 AM about the 2002 Chevrolet Trailblazer LS 4WD

Question type: Maintenance & Repair

My 02 trailblazer isn't shifting into 2nd and
the RPM's trev up really high unless I
manually put it into 2nd. I'm hoping a
transmission fluid flush would help?... I'm
not a car girl and just bought it off someone
who didn't tell me it did this. Bad buy but oh
well. What is the best transmission fluid I
can buy? Should I get the filter changed as
well? I don't have money to pour into it to get
the transmission looked at right now

1 Answer
11,265

FJ4072 answered 5 years ago

Do not do a transmission flush!!! That's a guarantee your tranny will fail quicker. Only replace the filter, and replace what fluid is lost with Dexron 6 only. When driving, if you let off the gas, will it change gears instead of doing it manually? If so, it's probably throttle position sensor, it's part of the throttle body. Take a look at this site....http://twincharlotte.com/blog/30-common-4l60e-transmission-problems-repair- charlotte-nc/

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