Interchangeable transmission

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
You have the blow up pic that isent ont eh very first or second email you should refer to that.
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Tuesday, January 24th, 2012 AT 12:35 PM
Tiny
LALFAN
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  • 179 POSTS
And it would look like #24 would be hanging down a little. Is it possible to take out like 31 n 32or whatever ahead of rear end thru that side without messing some thing up. How many parts can actually come out that side n be put back in without having the tranny out n all tore apart if that has dropped down or is it possible for that to drop a little. Thanks
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Tuesday, January 24th, 2012 AT 10:53 PM
Tiny
LALFAN
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The reason I was seeing the bearing inside looked like it was hanging down was because when I pushing rear end back in it was pushing the other axle out and it was tipping from the weight hanging from it. So I have to hold it in some how to put it together or take that axle out, then start putting it back together and hope the gears all mesh.
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Thursday, January 26th, 2012 AT 3:22 AM
Tiny
LALFAN
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Think maybe u should go find a pontiac tranny to work on to brush up ur skills a little. Got it together just fine. It was the other axle because there was nothing to hold it in.
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Sunday, January 29th, 2012 AT 2:43 PM
Tiny
TKAEGY
  • MEMBER
  • 4 POSTS
  • 2000 PONTIAC GRAND PRIX
  • 260,000 MILES
I have a 2000 Pontiac Grand Prix GT that needs a new transmission. It has a 3.8L V6 engine not supercharged. I am going to get a transmission from a salvage yard, but they need to know the type of transmission. I know it is a 4T65E based off the vin number. However I am supposed to tell them if it is a BCB or BRB. I have called every local mechanic and asked where to find this information and have searched the internet trying to compare diagrams. This information is NOT to be found. Not on any labels on the transmission, not on a label in the glove box, doors, or inside the trunk. I am lost. So, I guess since I cant figure whether it is a BCB or BRB, my question is, can they be interchanged? If I were to get either type of transmission from a salvage yard for the same year, model and make. Would it work? If not, is there any other possible way to figure out the type myself without having to take the car to a mechanic? Thank you for your time.
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Tuesday, April 14th, 2020 AT 6:29 PM (Merged)
Tiny
HMAC300
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If you have a "W" code n your vin number it's t465e
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-1
Tuesday, April 14th, 2020 AT 6:29 PM (Merged)
Tiny
TKAEGY
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I already know that it is a 4T65E based off the vin, that was all I could find out. I need to know if it is BCB or BRB. Not to be rude, but my first question has what I am wanting to find out, to save typing. Thanks
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Tuesday, April 14th, 2020 AT 6:29 PM (Merged)
Tiny
HMAC300
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We don't have any idea bout the bcb or brb tose are usaualy tags an dare paper. Thee may be anumber stamped by the pan someplace that will give that. Check for a plate as in pic that may have it.
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Tuesday, April 14th, 2020 AT 6:29 PM (Merged)
Tiny
D1985
  • MEMBER
  • 2 POSTS
  • 1999 PONTIAC GRAND PRIX
  • 129,000 MILES
I have a transmission problem its a bit drawn out but I have to explain. Just bought this 99 grand prix gt v6 3.8l, the guy said he'd dropped an engine with 80,000 miles in it. Which is great the engine sounds beautiful but this might be my problem. The engine was from a 97 grand prix I believe. I know he said 97. Tomorrow I will search the engine and find out for sure. I noticed after driving it awhile it shifted hard going up-shift and down-shift. I'm hoping it's just trash and a new filter and fluid will fix it, but I was searching on eBay for transmissions in case I need one and according to that the 97 engine is not compatible with the 99 transmission. Tonight it got stuck in 2nd gear for about 2 blocks at least and finally kicked into third and drove fine the rest of the way other than the hard shifting. So I need to know a few things. 1) is this 97 engine really not compatible with the 99 trans and is it even possible that it would still work just not work right? 2) do I need to get the 97 trans or another compatible trans and if so will I need to replace anything on the engine side that might have been damaged from this?
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Tuesday, April 14th, 2020 AT 6:29 PM (Merged)
Tiny
HMAC300
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You need to have engine and trans compatible with your computer. It seems tha tit wold be easier to put all the correct sensors in engine. Check tosee if they are all hooked up and scan for codes first. It may be the harness isn't plugged in correctly
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Tuesday, April 14th, 2020 AT 6:29 PM (Merged)
Tiny
D1985
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TY today I had diagnostics ran on it and kind of figured that out it came up with one code only. PO502 (low input speed sensor) showed twice one old and the other pending then we looked up the computers and for 97 it was 4T60E for 99 4T65E
So now I'm just stumped on where to go from here is there a way to adapt it where it will get the right voltage to the speed sensor? Will it be as simple as just changing the speed sensor? I'm lost when it comes to this electrical stuff. This is the newest car I've ever owned or worked on. I believe there is a trans shop here that does free diagnostics so im gonna see what their ideas are tomorrow hopefully. Mechanically I think the trans is still good the fluid I drained out was pretty clean. Not alot of metal shavings or any large shavings. There were small pebbles in the pan? Lol no idea how that happened but I dont think they ever made it through the filter or thered have been more metal shavings. Changed the filter and put lucas and new trans fluid it shifts right now not hard like b4 but just every now and then it doesnt want to upshift from first until 3.5 rpms when normally it will shift a little past 2. Thats another thing throwin me for a loop why would it get the right voltage and shift when its supposed to sometimes and others not until its at higher rpm?
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Tuesday, April 14th, 2020 AT 6:29 PM (Merged)
Tiny
HMAC300
  • MECHANIC
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The 4t60 and 4t65 may not be tht much different like maybe a another clutch or so in it. They did have a 4t65 in 97 just not for the 3.1L so it shouldn't be that much different however after looking at wiring diagram it looks as if the 4t65 has a pressure control solenoid in it which the 4t60 does not. I'm sure a trans guy can figure this out alot better than me as they deal in them all the time.
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Tuesday, April 14th, 2020 AT 6:29 PM (Merged)
Tiny
STIZZARD1986
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  • 1 POST
  • 1999 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 63,000 MILES
Will a 99 Grand prix 3800 transmission fit a 2002 GTP?
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Tuesday, April 14th, 2020 AT 6:29 PM (Merged)
Tiny
MMPRINCE4000
  • MECHANIC
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Call local junkyard and ask, they have interchangeability info on all cars.

While it will probably fit, (3800 to 3800) it may not be stout enough to handle the supercharger power.
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Tuesday, April 14th, 2020 AT 6:29 PM (Merged)
Tiny
PKJL333
  • MEMBER
  • 1 POST
  • 1998 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 209,000 MILES
I was wondering if a 96 tranny would fit into a 98. Would taking two carsand making them one be okay. And if not what would you suggest if the tranny isnt moving into 3rd gear and is reving high?
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Tuesday, April 14th, 2020 AT 6:29 PM (Merged)
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Contact local junkyard and see what years' transmissions are interchangeable.

Some trans shops are offering free diagnosis, take car to shop and get a diagnosis, could be something simple like a shift solenoid, but generally when a trans starts slipping it is not a good (or cheap) sign.
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Tuesday, April 14th, 2020 AT 6:29 PM (Merged)

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