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Gm 4T65e transmissions

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santonio03

Post subject: Gm 4T65e transmissions

Posted: Thu Nov 11, 2010 11:25 pm

SLE Member

Joined: Thu May 13, 2010 9:39 pm
Posts: 83
Year and Trim: 1996 pontiac bonneville se

On today i went to a salvage yard with my dad to look for a tranny for his 99 bonneville se. the man at the junk yard told us that we can use the same tranny that came from a 2008 chevy impala because it have the same 4T65e tranny. is this true? we did comparison and they both look exactly alike! but he told us the only thing we had to do is use the wore harness on the chevy and may have to use the axle off the chevy as well?

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00Beast

Post subject: Re: Gm 4T65e transmissions

Posted: Thu Nov 11, 2010 11:59 pm

Retired Site Developer

Joined: Tue May 27, 2008 10:30 pm
Posts: 20960
Location: MN/IA
Year and Trim: '17 Silverado 1500

Nope, it's completely different internally. It's true that it is also a 4T60E, but it's still completely different. Not going to work, as the 08's use a completely different way of communicating from the engine to the trans to the PCM, and it's not similar at all. The case may be the same, but it's not compatible w/ your car.

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harofreak00

Post subject: Re: Gm 4T65e transmissions

Posted: Fri Nov 12, 2010 10:18 am

Administrator

Joined: Mon May 19, 2008 6:04 pm
Posts: 25877
Location: Browerville, MN
Year and Trim: 2004 GXP - plus a handful of other Bonnevilles

That salvage yard is pulling your chain, wonder what they would do when you take it back when it doesn't work.

Your 96 has the 4t60e, the 08 has the 4t65e, and they are not nearly compatible.

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Andrew - owner/operator of Bonnevilles Unlimited

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sandrock

Post subject: Re: Gm 4T65e transmissions

Posted: Fri Nov 12, 2010 10:25 am

Retired Gearhead

Joined: Mon May 19, 2008 2:14 pm
Posts: 4753
Location: Orlando Fl
Year and Trim: '00 SSEi (proj), '99 Tahoe & '05 Bonne GXP

It's for his dads 99, not his '96.

Still...it's very different electronically.

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2005 GXP - White Gold Pearl, no mods...yet.
2000 SSEi - Resurrection in progress. Built L67 w/L32 fuel rail, ported heads, and cam. Camaro front brake system, GXP cluster, and much more in planning.

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Looks like a Volt, Sonata, and Taurus got it on.

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harofreak00

Post subject: Re: Gm 4T65e transmissions

Posted: Fri Nov 12, 2010 10:27 am

Administrator

Joined: Mon May 19, 2008 6:04 pm
Posts: 25877
Location: Browerville, MN
Year and Trim: 2004 GXP - plus a handful of other Bonnevilles

whoops, missed that part.

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Andrew - owner/operator of Bonnevilles Unlimited

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zuper8

Post subject: Re: Gm 4T65e transmissions

Posted: Fri Nov 12, 2010 11:02 am

Posts like an L67

Joined: Fri May 23, 2008 12:26 am
Posts: 1219
Location: Charlotte, NC
Year and Trim: 96 SSEi- 157K

yeah, even GM doesn't let a transmission go un-updated for 9 years.... lol glad you didn't listen to them.

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