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Old Aug 8, 2012 | 04:50 PM
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huntke
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transmission question

Hey all I have a question about the way the tranmission shifts on my 99. When its cool out (like below 55) it won't shift into overdrive for the first two or three miles of driving. Also when it shifts into OD it's like there is an extra shift a second or two later with the rpms raising slightly in between these two. Im assuming this "extra" shift is the TC locking but why would it do this? Any ideas?
 
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Old Aug 8, 2012 | 06:24 PM
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Mark Kovalsky
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It does this because that's the way the PCM was programmed from the factory.
 
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Old Aug 8, 2012 | 08:51 PM
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huntke
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I was hoping to hear from you Mark. So this is normal for an early 99? I've been thinking I had a problem.
 
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Old Aug 8, 2012 | 09:21 PM
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Mark Kovalsky
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I don't think you have a problem.
 
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Old Aug 9, 2012 | 06:14 AM
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huntke
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Thank you......I'll rest a little easier now. I haven't had the truck very long, and I don't know any of the history on it. Kevin
 
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