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 Post subject: Trans Fluid Change
PostPosted: Wed Nov 13, 2019 9:44 pm 
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Joined: Sun Jan 01, 2012 7:38 pm
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Location: Morris, IL.
Year and Trim: 2003 Bonneville SSEI
Sad to say but I have let my trans maintenance slip by on our 2002 buick regal. I noticed it is shifting harder than normal but no slipping, I think I hear the pump whine slightly and pulling the dip stick the fluid looks dirty but does not smell burnt. Do I dare change out the filter and add whatever fluid drains out or change filter and re use the old fluid? I have read so many articles from don't do a thing to drain add a quart at a time at 2K intervals. My neighbor believes its a solenoid issue


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 Post subject: Re: Trans Fluid Change
PostPosted: Wed Nov 13, 2019 10:01 pm 
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Joined: Wed May 21, 2008 11:47 pm
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Location: Philly
Year and Trim: 95 SLE
The general consensus for a fluid/filter change is to drop the pan, do the filter and replace the fluid that drained out. You'll get all but 3 qts if I remember right. You don't want to do a flush that some shops advertise because it can knock and send debris through your trans.

I can't say for sure if doing that will fix your hard shifts.

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 Post subject: Re: Trans Fluid Change
PostPosted: Thu Nov 14, 2019 11:56 am 
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Joined: Mon May 19, 2008 6:04 pm
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Location: Browerville, MN
Year and Trim: 2004 GXP - plus a handful of other Bonnevilles
7.5 quarts with a pan drop.

A Transgo shift kit will take care of your harsh shifts (P1811)

https://www.ebay.com/itm/Transgo-Shift- ... SwpDdU45dR

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 Post subject: Re: Trans Fluid Change
PostPosted: Thu Nov 14, 2019 7:47 pm 
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Joined: Sun Jan 01, 2012 7:38 pm
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Location: Morris, IL.
Year and Trim: 2003 Bonneville SSEI
don't think its a solenoid issue? My neighbor says theres 2 of them in the side cover that male the *shoot* smooth and need to be changed, I'll change filter and fluid first before I would pull the transmission


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 Post subject: Re: Trans Fluid Change
PostPosted: Fri Nov 15, 2019 3:28 pm 
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Location: Grand Rapids, Michigan
Year and Trim: 2014 Cadillac XTS Vsport.
Do the kit while you're in there.

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 Post subject: Re: Trans Fluid Change
PostPosted: Fri Nov 15, 2019 4:30 pm 
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Joined: Mon May 19, 2008 6:04 pm
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Location: Browerville, MN
Year and Trim: 2004 GXP - plus a handful of other Bonnevilles
The solenoids are the issue, but the shift kit fixes it with a much cheaper and easier option. I install the shift kit in 90% of the cars that come through my shop.

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2004 Bonneville GXP | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
2005 Town & Country Limited | Butane Blue Metallic | 290k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 210k | Official Bonneville Hauler


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 Post subject: Re: Trans Fluid Change
PostPosted: Sat Nov 16, 2019 1:51 pm 
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Joined: Mon May 10, 2010 6:11 pm
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Location: Chicago, IL
Year and Trim: 2003 SLE
The shift kit will fix your harsh shifts.

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 Post subject: Re: Trans Fluid Change
PostPosted: Fri Nov 29, 2019 5:23 pm 
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Joined: Sun Jan 01, 2012 7:38 pm
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Location: Morris, IL.
Year and Trim: 2003 Bonneville SSEI
shifting fine now??


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