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installing torque converter and 3.42 diff

   
Old 09-17-2015, 08:02 PM
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Default installing torque converter and 3.42 diff
doing this in pirateslife4me car. got it all tore down and ready to drop the cradle. this car has the F45 shocks, so we are removing those. so, off goes the module.
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Old 09-18-2015, 12:22 PM
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Transmission and diff removed. even left the torque tube in the car.
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Old 09-18-2015, 12:26 PM
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If you don't use the GM Tech2 to remove the RPO from the BCM,, you will be speed limited to 80 MPH and have all sorts of messages and DTCs!!
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Old 09-18-2015, 12:39 PM
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Originally Posted by Bill Curlee
If you don't use the GM Tech2 to remove the RPO from the BCM,, you will be speed limited to 80 MPH and have all sorts of messages and DTCs!!
Please elaborate. I would like to do the diff and torque converter on my car and this is not clear.
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Old 09-18-2015, 12:47 PM
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Originally Posted by Bill Curlee
If you don't use the GM Tech2 to remove the RPO from the BCM,, you will be speed limited to 80 MPH and have all sorts of messages and DTCs!!
He is adding resistors to compensate for the f45 removal.
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Old 09-18-2015, 12:48 PM
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Originally Posted by flyingillini
Please elaborate. I would like to do the diff and torque converter on my car and this is not clear.
He is refering to the removal of the f45 shocks.
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Old 09-18-2015, 06:34 PM
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Originally Posted by mrr23
He is adding resistors to compensate for the f45 removal.
HE STATED THAT HE IS REMOVING THE "MODULE" If he is depending on the resistors,,, the ENTIRE SYSTEM must be retained and WORK!

So,,, you can NOT remove any F-45 suspension parts (other than the shocks)
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Old 09-18-2015, 06:39 PM
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Originally Posted by flyingillini
Please elaborate. I would like to do the diff and torque converter on my car and this is not clear.
You have to remove the F45 Real Time Dampening RPO from the BCM if you want to disable the F45 Real Time Dampening

If you install a different stall speed converter, you will have to have the PCM tuned to have the transmision shift properly.

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Old 09-18-2015, 07:11 PM
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Originally Posted by Bill Curlee
HE STATED THAT HE IS REMOVING THE "MODULE" If he is depending on the resistors,,, the ENTIRE SYSTEM must be retained and WORK!

So,,, you can NOT remove any F-45 suspension parts (other than the shocks)
Did not know the module that connects to the upper arm had to stay. Can be easily put back on.
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Old 09-18-2015, 07:44 PM
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Originally Posted by mrr23
Did not know the module that connects to the upper arm had to stay. Can be easily put back on.
Thats why I am a fan of removing the entire RPO and not having to worry about ALL of the system components working properly.

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Old 09-18-2015, 08:52 PM
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He has hptuners to fix the shift points and knows someone with a tech II.
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Old 09-20-2015, 12:58 AM
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Originally Posted by mrr23
He has hptuners to fix the shift points and knows someone with a tech II.
The TC and 3:42's are gonna be a fantastic upgrade! I installed a 3400 stall in mine, but left the 3:15's and the car felt like a different animal.

I used HP Tuners to adjust the shift points, pressures, and TC lockup points....It took a few tries, but I love how it performs....errr...performed!

Good luck with the swap!


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Old 09-22-2015, 01:22 PM
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While it's apart I would check the drive shaft couplers-just in case.
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Old 09-22-2015, 04:08 PM
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Originally Posted by Bill Curlee
If you don't use the GM Tech2 to remove the RPO from the BCM,, you will be speed limited to 80 MPH and have all sorts of messages and DTCs!!
I learned this the hard way after completing my A4 to Six Speed swap and using a trans harness from a car that didn't have the option.

Fortunately I have a friend with a Tech2 that can clear things up and I don't think I need to be going over 80 until I can get together with him. There are so many warnings though!
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