Auto Tranny update

The G-Series Tuning Forum is the place to discuss G35/G37 performance modifications and mechanical repair.
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GMachine
Posts: 26
Joined: Wed May 21, 2003 8:26 am
Car: cars, camping, sports

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I had heard that the new 2004 Q45's have a updated auto tranny software fix that sharpens up the shifts and lessens the "hunting" and delayed shifts in D mode.

Anyone know about this? Since the tranny is the same in our G35's, - could it be applied to our auto trannies?

I asked at our dealer here in Edmonton, Canada, and was told they had heard that it was a Q45 specific upgrade! ???

GMachine:confused:

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PalmerWMD
Posts: 18383
Joined: Mon Apr 29, 2002 3:14 pm
Car: 2004 350Z

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Your dealer is right.There is a STB out for the 2k2 Q45's and early 2k3's and also early 2k3 M45's.

But does not apply to G35.G35's auto tranny TCU was programmed a bit different to begin with, so there was no need for the TSB.

Fred..:)
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rydwhite
Posts: 3271
Joined: Fri May 30, 2003 3:43 am
Car: 2003 G35 Coupe

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You could install a 7 wire grounding kit. I've heard that it makes a big difference in the auto shifts. Plus the colored wires add a nice look to the engine compartment.
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szh
Posts: 18857
Joined: Tue Jul 23, 2002 12:54 pm
Car: 2018 Tesla Model 3.

Unfortunately, no longer a Nissan or Infiniti, but continuing here at NICO!
Location: San Jose, CA

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Hi, Fred and GMachine.

The transmission TSB applies to the 2003 Q45, 2003 M45 and 2003 G35 - both sedan and coupe. None of the 2004 models are listed.

Ask the dealer to do the TCM programming as recommended in ITB03-034. The "other" stuff in the TSB may not be needed - particularly if the Check Engine light is not on.

Z
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PalmerWMD
Posts: 18383
Joined: Mon Apr 29, 2002 3:14 pm
Car: 2004 350Z

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Hmm, interesting....

I had never heard of it applying anywhere but the V8's.I guess you never stop learning.

Fred...:)
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GeeThreeFive
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Joined: Thu Oct 02, 2003 6:43 pm

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Hey Fred!Where at in Germany did you grow up?
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PalmerWMD
Posts: 18383
Joined: Mon Apr 29, 2002 3:14 pm
Car: 2004 350Z

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Berlin, Prussia.

Fred..:)
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GeeThreeFive
Posts: 319
Joined: Thu Oct 02, 2003 6:43 pm

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I just asked because my mom lived in Frankfurt until she was 21 and met my dad. He was in the service. I still have relatives over that come to visit every year.

:beer

:bearchug
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