Hi,
What is the idle speed? When it shifts, is it an abrupt shift? Is there any delay when placing it in gear or shifting? Is the transmission fluid clean and full?
This could be a pressure related issue. At first, I was thinking mounts until you said they have been replaced. Has anyone serviced the transmission recently? If the wrong fluid was installed, it can cause these symptoms. Also, there was a technical service bulletin years back which included a hard shift concern. Based on diagnoses, the transmission or torque
converter was replaced for years or 100,000 miles. However, you indicate there are over a million miles on it, so that isn't even a consideration at this point, even if you wanted to argue it.
Regardless, if you cold, let me know the answers to the questions I asked. It may help me. Also, let me know if the computer was scanned.
Take care,
Joe
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Thursday, November 21st, 2019 AT 5:19 PM