Sounds right to me. You may as well not look at what the shop manual suggests. GM has about 50 different calibration proms for the PCM. I`ve had em where they won`t lock-up til 60-62mph. That was GMs early fix to shudder problems. Most GM front wheel drives won`t command lock-up til over 40-45mph.
The TCC should unlock at closed throttle, otherwise you can get those on the gas, off the gas drivers that can really make the car start to buck. There`s nothing you can do in the trans to change lock-up timing or release, 100% computer commanded. Good luck and keep driving her, those are great cars. BW
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Today's Featured Article - Diagnosing Engine Difficulty - Diesel Tractors - by Staff. The following suggestions are listed for your assistance. You can make simple adjustments on your tractor that will improve its operation and save you the time and expense of hiring someone to do it for you. Always make one adjustment at a time, and if the adjustment made does not improve the condition, return to the original setting before proceeding to the next adjustment. Hard Starting Cold air temperatures. Insufficient fuel.
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