Delayed shift into overdrive (4th gear) - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 08-15-2013, 10:03 PM   #1
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Default Delayed shift into overdrive (4th gear)

After shifting seamlessly through 1-3 gears, it takes the transmission about 15-20 seconds at 2500rpms, or roughly 55 mph to finally shift.

I took it to Certified Transmissions, and they ran the transmission through the gauntlet and determined it was definitely NOT a transmission issue.

Does anyone have any suggestions on where the issue may lie? Thanks for your input!
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Old 08-16-2013, 08:12 AM   #2
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is this on your van? im no trans expert but given all the common issues with that trans with slow shifts i would get a second opinion. find someone that has a bunch of 4l60 experience.
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