Locating transmission module gps (solenoid) - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 10-30-2006, 03:22 PM   #1
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Default Locating transmission module gps (solenoid)

1995 Bonneville/4T60e-HD

Just purchased what I was told is a transmission module gps (solenoid) at a parts store, after running a computer diagnosis. However there are no directions with it or any clues as to where it might be located. Appreciate any help you may be able to give.
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Old 10-30-2006, 04:00 PM   #2
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WTH is a gps solenoid? Only solenoids I am aware of are the 3-4 inside the tranny. Pop the side cover off, and they are looking right at ya. Can you provide a pic, part #, source or anything so I can see it?
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Old 10-30-2006, 04:10 PM   #3
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Default Transmission Module

This is all new to me. Transmission was acting up so I took it to Advanced Auto. They ran a computer check and sold me this part. On the box it reads 12UGPS ALT.F/TSS21 Soleniod. It only costs 32.00. It is a small black square set in a metal harness. There is plug in connector on onside and a plastic round cylinder on the top. I have searched the web and cannot find another one like it.
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Old 10-30-2006, 04:34 PM   #4
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GP Sorensen Transmission Control Solenoid.

Looks like a common solenoid. Some are used 2 times inside.

Did they tell you what the code was?

What are your symptoms?

It'* either your TCC lockup solenoid or one of your shift solenoids.
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Old 10-30-2006, 07:47 PM   #5
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New guy here folks, let'* give him some leeway here. He sent me a PM about the codes and everything....

Quote:
Originally Posted by cperron
Current Code P0740
Torque Converter
Clutch TCC
Failure

History Code P0300
Misfire Signal
Misfire Detected

History Code P0740
Torque Converter
Clutch TCC
Failure

That is exactly how it reads on the paper.
I appreciate any insight you might be able to give me. We are not very mechanical around this house. So if someone can walk us through that would be great. A nother thought I had was taking it in for transmission fluid change and asking them to put it in. But I just moved to a small town in Georgia and it seems people are trying to sell me things I don't need. Big Ten just told me it needed a $500. belt. I left there believing them called former mechanic, he said absolutly not. Had three others look at and tell me the belt was fine. This has been a very pampered car and has up until now only one very good mechanic work on it.

Thanks so much, Cheryl
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Old 10-30-2006, 07:51 PM   #6
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Yup, just as I suspected. That solenoid that you bought needs to go in. This is the one that makes your torque converter lock up around 48MPH.

Does anyone know if you can pull the side pan off the tranny while its still installed? I think you have enough room to do it with.

Let me get some pictures rounded up for you for illustrative purposes. Will get back to this here shortly.

That other code about the misfire. Disconnect your battery for a few minutes, reconnect and it might go away. Weird it didn't tell which cylinder.
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Old 10-30-2006, 07:59 PM   #7
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This is going to get interesting here...

Do you think you can pull a driveshaft out?
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Old 10-30-2006, 09:03 PM   #8
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Default transmission solenoid

I am being told possibly. My other half says he droped the drive shaft in his pick up without andy problem. But he'* not had a chance to look at the one in the Bonneville.
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Old 10-30-2006, 09:15 PM   #9
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Ok, he is looking at least pulling the driveshaft out of the transmission so he can remove the side pan. This along with draining the fluid(might as well do the filter also). And he might have to order new gaskets for the side pan also. I think I spent like $35 at the dealership for the 2 sidepan gaskets. About $15 for the filter and gasket.

Some one please chime in about removing the drivers side shaft. Does he have to disconnect the strut from the A-arm to pull the shaft out of the trans?

Here'* a pic of the side pan he needs to remove.

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Old 10-30-2006, 11:09 PM   #10
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Basically, he has to unbolt the lower arm? I think, and remove anything that is going to prevent the shaft from moving out. as long as it can swing before he takes the shaft out, hell be fine.
From there, he can get a HUGE screwdriver (flat head), or otherwise known as a pry bar, and get it between the shaft and the tranny and pry that sucker out.

Is there anything im missing?
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