Tranny Issues - Page 2 - GM Forum - Buick, Cadillac, Olds, GMC & Pontiac chat

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Tranny Issues

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Old 02-28-2007, 12:17 PM
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TJ, ignore the modulator vacuum line. That won't make it slip, that will make HARSH shifts.

Changing the fluid has never doomed a trans that we've ever seen here. But what do you have to lose? You have no first gear anyway.

Either get a flush, or drop the pan and do the filter. That'll only get about a third of the fluid, but it might be enough.
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Old 02-28-2007, 12:37 PM
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actually i have first now, but for how long is the question. It is werid how this came along so quick. No signs or syptoms. I am going to probably drop the pan and do a filter change then drive for about a month (if it last) and drop the pan and do it again. That should be about 1/2 the fluid correct? I guess it cant hurt. Does anyone have any ideas about the gt tranny? Is there anything besides the gearing the pcm i have to do if it comes to this?
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Old 02-28-2007, 01:50 PM
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My trans was slipping on take off from a cold stop every now and then and I changed the fluid/fliter and it went away. Not exactly the same problem but I think you really don't have anything to loose with changing the fluid.
And as for a GP tranny. Nope. They are 65s and require a different pcm to control line pressure. You could get a 3.33 diff though. Thats a whole other topic though.
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Old 02-28-2007, 02:00 PM
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but dont the 1997 gt'* run the 4t60e? i believe so
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Old 02-28-2007, 02:04 PM
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here is a tranny ed morad is selling for a 1997 grand prix gt that is a 4t60e. http://cgi.ebay.com/ebaymotors/GM-4t...6437QQtcZphoto
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Old 02-28-2007, 03:12 PM
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Yes the 97s did but a, theres no way the wiring is the same and b, 60s never can with 3.29s, they came with 3.33s.
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Old 02-28-2007, 04:54 PM
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Ben has a '95 4T60-E in his 97.... No re-wiring required. The thing to watch out for with later model transmissions is the PWM TCC solenoid and if yours is the same setup... I think... Hope this is more useful information than useless.
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Old 03-01-2007, 12:08 PM
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i drove it to clinicals yesterday and it was fine the hole time. I am going to do a filter and fluid change and just go from there.
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Old 03-01-2007, 01:37 PM
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I never tried it but before you change the fluid you could try the Lucas additive. Some on the BC have used it sucessfully. Run it a week then change the fluid and filter.
I allways view trans additives as a last resort fix. If its starts slipping again what do you have to loose.
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