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Miscellaneous Automotive
Car Performance & Repair
97 Bonneville Transmission Issue: Reprogramming TCU
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<blockquote data-quote="truckramrod" data-source="post: 7043554" data-attributes="member: 570869"><p>That vehicle does not have a TCM, it has a pcm which controls the engine and transmission. The computer will relearn the values, just undo the battery negative cable for 1 minute. Reinstall and let the car idle for a few minutes and then drive a few miles gently.</p><p></p><p>I'm a GM tech and I own a very similar car and it has a very similiar issue, but with 184,000 miles i just let it slide.</p><p></p><p>As far as taking it to the dealer, it is unlikely that there are updated calibrations for this issue, either you guys fixed it or you didn't.</p><p></p><p>Let us know.</p></blockquote><p></p>
[QUOTE="truckramrod, post: 7043554, member: 570869"] That vehicle does not have a TCM, it has a pcm which controls the engine and transmission. The computer will relearn the values, just undo the battery negative cable for 1 minute. Reinstall and let the car idle for a few minutes and then drive a few miles gently. I'm a GM tech and I own a very similar car and it has a very similiar issue, but with 184,000 miles i just let it slide. As far as taking it to the dealer, it is unlikely that there are updated calibrations for this issue, either you guys fixed it or you didn't. Let us know. [/QUOTE]
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Miscellaneous Automotive
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97 Bonneville Transmission Issue: Reprogramming TCU
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