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Pontiac G6 gt shifts hard

Tiny
KRISTINMM
  • MEMBER
  • 2008 PONTIAC G6
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 55,000 MILES
My pontiac g6 gt has had the torc converter replaced however it still shifts extremely hard around 40 mph. What is going on? Could it be my lifters?
Tuesday, December 21st, 2010 AT 5:15 AM

4 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Was the work done by a transmission shop? They should know why it still shifts hard?
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Saturday, December 25th, 2010 AT 7:19 AM
Tiny
ERNEST CLARK
  • MECHANIC
  • 1,730 POSTS
No it can't be your lifters. Also, check fluid level and condition of fluid. An over fill or under fill will cause you major problems.

Also, all tranny shops aren't created equal. Do your homework.
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Saturday, December 25th, 2010 AT 11:31 AM
Tiny
MHPAUTOS
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The torque converter is basically a fluid clutch, the I would be thinking that it is more pump pressure related or a sticky shift valve, a competent transmission workshop will be able to diagnosis this fault.

Mark (mhpautos)
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Thursday, January 6th, 2011 AT 11:53 PM
Tiny
FIXITMR
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Is it going into overdrive at around 40? Count the shifts. Should be number 4? The first shift is usually very quick after takeoff when warmed up so you might miss it. The torque converter has the 4th (overdrive) gear clutch in it.
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Friday, January 7th, 2011 AT 6:15 AM

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