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Thread: Limp mode after 1/2 shift (pulls timing)

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    Default Limp mode after 1/2 shift (pulls timing)

    2003 5.3 with 4l60e swapped into a 2003 Trailblazer. Everything works great but when given hard throttle and after making the 1-2 shift, the throttle loses power for a second or two before it kicks in. Almost like a brief limp mode. If I watch the timing during this it drops from 30

  2. #2
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    Any ideas on what would cause timing to be pulled to -10 during/briefly after a 1-2 shift?

  3. #3
    Joe (Moderator) joecar's Avatar
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    Post tune and log files.

  4. #4
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    Torque Management/Reduction are kicking in, should be able to reduce/eliminate it pretty easily. It's there to save the transmission and soften the shifts, I like to remove around 50% to start and go from there.
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

  5. #5
    Joe (Moderator) joecar's Avatar
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    Quote Originally Posted by bubba68ss View Post
    ... after making the 1-2 shift, the throttle loses power for a second or two...
    Also check the shift time tables, 1+ seconds is way too long for a shift.

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