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 Post subject: Gm 4T65e transmissions
PostPosted: Thu Nov 11, 2010 11:25 pm 
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Joined: Thu May 13, 2010 9:39 pm
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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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PostPosted: Thu Nov 11, 2010 11:59 pm 
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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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PostPosted: Fri Nov 12, 2010 10:18 am 
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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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PostPosted: Fri Nov 12, 2010 10:25 am 
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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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PostPosted: Fri Nov 12, 2010 10:27 am 
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Location: Browerville, MN
Year and Trim: 2004 GXP - plus a handful of other Bonnevilles
whoops, missed that part.

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2004 Bonneville GXP | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette Coupe | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 75k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 250k | Official Bonneville Hauler


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PostPosted: Fri Nov 12, 2010 11:02 am 
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Joined: Fri May 23, 2008 12:26 am
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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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