Transmission Trouble - Page 3 - 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 12-31-1969, 08:00 PM   #21
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I have a 95 SE with series II engine but not sure what model of tranny. Anyway, recently the transmission seams like it will not down shift out of overdrive when you press on the accelerator. The car starts jerking repetedly like its trying to downshift but it never completely shifts. The car drives fine around town around 30-40mph but cannot use cruise control on a hilly highway. Any insight as to what may be the problem would be greatly appreciated.
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Old 12-31-1969, 08:00 PM   #22
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Strange that this should happen to me at the sam etime of this post...
coming home from school today i was going about 100 (km, not MILES...) and let off....going up a hill because it was 50 on the other side. anyway when the car hit 90, it gave 2 little jerks...you probably wouldn't even notice them unless you drove the car every day like me. I tried it again, and it did it again. It almost feels like a back fire, but of course it'* so where near severe, and it dosn't seem bad enough to be a tranny slip...plus no light comes on. ??
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Old 12-31-1969, 08:00 PM   #23
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Teuobk, no I haven't tried to shift into drive when it does but i will try that to try to narrow it down some more. The way I get it to downshift is push the accelerator to the floor where it downshifts properly and does not jerk. It seams to do it when I am going up a hill on the highway and first the torque converter should unlock and your rpm'* go up then if that is not enough the car should downshift to the next lower gear to maintain your current speed. That is the way it used to operate. However when driving in town at the 30-40 mph speeds the car does this just fine. It only does it on the highway when the car is in overdrive. Csprague has your car done this for a long time. This just started happening and 87,000 miles for me. Just wondering and thanks for the replies.
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Old 12-31-1969, 08:00 PM   #24
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*cough* rebuilt *cough*
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Old 12-31-1969, 08:00 PM   #25
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did some deliveries tonight. it'* still doing it.

i think i'm just going to ignore it.
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