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shifting

  1. Tuning
    Well guy's i feel i have had a long enough break in period 5k miles with no problems other than cam/crank correlation that keeps it from starting sometimes but if i key off and try again fires right up. Anyways my shift rpm was set low and was the mph for break in. I turned up the wick today to...
  2. I4/I5 Engine & Drivetrain
    I am a new member to the forum, but I have spent the past month reading every thread the search engine on the forum would offer in regards to my problem. First some background. About 2 months ago I purchased a used 07 Canyon Z71 Crew Cab. The truck had been totaled in an accident (I believe...
  3. I4/I5 Engine & Drivetrain
    I have a crew cab 4x4 with the 4l60e auto trans and im having problems with the trans not shifting into 4th gear. It is only doing this when the truck as been sitting for 8 oro hours either when I start it up in the morning or when I get off of work it does this. It will hold onto 3rd gear...
  4. I4/I5 Engine & Drivetrain
    Transmission Adaptive Functions (Source: AllData) The 4L60-E transmission utilizes a line pressure control system during upshifts to compensate for the normal wear of transmission components. By adjusting the line pressure, the PCM can maintain acceptable transmission shift times. This process...
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