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Old 05-11-2005, 01:46 AM   #1
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Default NEED GTP HELP

ok yall, my 99 GTP is showing code P0742. i took it to a transmission shop today and they said that they would have to rebuild the trans to fix that part because it was inside the trans and they werent going to touch just that. I dont know what to do. please advise me before i go for estimates tomorrow morning. Thanks guys!!

Jeff
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Old 05-11-2005, 01:55 AM   #2
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torque convertor?
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Old 05-11-2005, 01:59 AM   #3
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TCC stuck off........torque convertor issues.

Well you could try a good tranny flush, might loosen something? This can cause more problems than it cures if you have not been a regular flusher (loosen debris that can clog passages at a later date) but as a last ditch attempt?

It looks like the culprate to my tranny woes maybe the 3rd sprag? Only a $30 part but I needed a whole rebuild to fix it.
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Old 05-11-2005, 03:27 PM   #4
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Oh man.. that code. Don't f***ing remind me.

It'* the TCC switch. Cost us $1,800 for a rebuild in the Montana (74k miles). Ugh, I hate the 4T65. I didn't think the -HD'* even had this problem.
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Old 05-11-2005, 03:41 PM   #5
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P-Dad, does that mean that the TCC solenoid is not functioning upon Computer command?

So far I have not heard a lot of good about the 4T65-E'*... They were supposed to be a good improvement over the 4T60-E... I saw a 97 Transport( Montanna Package I guess ) It had the wheels and all of the trim... It had a 4T60-E and 170,000 miles on it... still working good too...

we may have to see what the PCM looks for when it sets that code..

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Old 05-11-2005, 04:53 PM   #6
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Quote:
Originally Posted by jr's3800
P-Dad, does that mean that the TCC solenoid is not functioning upon Computer command?
It means the TCC switch is stuck on. The PCM can't disengage it, so the TCC is sitting either wide open, or stuck halfway.. it depends on how far everything is gone.
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Old 05-11-2005, 05:06 PM   #7
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I think some shops will serivce just the TCC, call around and see. I'd follow Jr'* lead on what sets the code to see if there'* anything to check before having someone dive into it.
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Old 05-11-2005, 05:07 PM   #8
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Jeff is there any other Trans shops around that will look at it for you... Other the the P0742 code, does the trans shift good with no issues?

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Old 05-11-2005, 05:10 PM   #9
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Quote:
Originally Posted by BillBost37
I think some shops will serivce just the TCC, call around and see. I'd follow Jr'* lead on what sets the code to see if there'* anything to check before having someone dive into it.
Book says,

If the PCM detects 3 occourences of TCC slip -20 to + 25 Rpms when the TCC is commanded off, then the P0742 sets..

I'd be looking for another place to have a glance at the car and if all is fine with the trans I'd simply have the TCC solenoid replaced as opposed to a complete rebuild...

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Old 05-12-2005, 12:45 PM   #10
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well the tranny is completely out and is at the trans shop now. gonna need a rebuild. lost all the gears. dangit. i bought this car in hopes that i wouldnt have to go through what i went through with the bonne but who knows!!! wish me luck yall!!
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