Tranny Hesitation When Shifting - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 12-02-2009, 12:01 AM   #11
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Even if it'* ABOVE? I can see WAY above, but every vehicle I've had read a bit above the mark when hot...

I just took a video of the sound, I'll post it when its uploaded.

I checked the fluid by running the gears through, it was running for about 5 minutes. It seems that the fluid is too thin (compared to my other vehicles), even when it'* 35*F out here, the fluid was dripping off the end of the dip stick.

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Old 12-02-2009, 12:07 AM   #12
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Here'* the video. The sound is VERY apparent in the first few seconds of the video. It'* not THAT loud, its just because the camera was so close...



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Old 12-02-2009, 12:12 AM   #13
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That'* your IAC

Unless your talking about the high pitch whine later in the video
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Old 12-02-2009, 12:13 AM   #14
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That'* your IAC
X2...yepper.
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Old 12-02-2009, 12:16 AM   #15
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Really!? The IAC is *THAT* loud? It'* just a little device on the throttle body!

I'm amazed...

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Old 12-02-2009, 12:17 AM   #16
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Quote:
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Even if it'* ABOVE? I can see WAY above, but every vehicle I've had read a bit above the mark when hot...

I checked the fluid by running the gears through, it was running for about 5 minutes. It seems that the fluid is too thin (compared to my other vehicles), even when it'* 35*F out here, the fluid was dripping off the end of the dip stick.
Not many of us will recommend using anything in your transmission other than fluid. The Trans Tune has moderate success in clearing varnish from seals, clutch plates, solenoids and bearings and will make mushy shifts more firmer, but is best used prior to a fluid and filter change.

Try the TCC switch adjustment and if that doesn't work, drop the pan, change the filter and fill back up with Dexron VI and no other additives.
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Old 12-02-2009, 12:18 AM   #17
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You should hear mine. If you gut the air box, or add a fender wall intake or cold air box it will be even louder.
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Old 12-02-2009, 12:23 AM   #18
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You should hear mine. If you gut the air box, or add a fender wall intake or cold air box it will be even louder.
I just couldn't imaging walking onto the GM dealer'* lot to look at one of these cars, start it up and hear THAT... I'd run away from the car!

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Not many of us will recommend using anything in your transmission other than fluid. The Trans Tune has moderate success in clearing varnish from seals, clutch plates, solenoids and bearings and will make mushy shifts more firmer, but is best used prior to a fluid and filter change.

Try the TCC switch adjustment and if that doesn't work, drop the pan, change the filter and fill back up with Dexron VI and no other additives.
Ooh, an interior fix, that sounds easy enough... I guess I'm required, now, to drop the pan and change the gasket/filter... I'm just so nervous I'm going to get a leak. (I've had bad experience with auto tranny leaks)

Thanks,
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Old 12-02-2009, 12:27 AM   #19
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Clean the gasket surfaces good, and torque the bolts to the exact amount required. Torque the bolts across from each other and move back and forth until they are all done. Then check them again, and again until none move.
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Old 12-02-2009, 12:34 AM   #20
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Thanks for the tips. I'll have to drop in Friday to see if the lift will be available on Tuesday...

Nick

EDIT: Is it just me, or does it seem odd to have two separate switches for the brake lights and the TCC switch? In my Bravada, the same switch that commanded the TCC also turned on the brake lights...

Nick

Last edited by NTL1991; 12-02-2009 at 12:41 AM.
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