Transmission slipping once vehicle warms up.

Jgentry87

Newbie
Joined
Dec 16, 2021
Messages
3
Points
1
Make
Pontiac
Model
Montana SV6
Year
2005
Miles
195000
Engine
3.5 v6
2005 pontiac montana sv6.

Transmission stutters during takeoffs and sometimes slips while driving once vehicle has warmed up. Ive tried changing the Trans fluid and filter. Seemed to fix it for about a day and then went back to slipping. Any ideas?
 

billr

wrench
Staff member
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Mar 12, 2007
Messages
7,331
Points
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Have you had it scanned for trouble-codes?
 

bp042665

transmission guy
Joined
Nov 26, 2012
Messages
743
Points
18
Location
Iva South Carolina
sounds like harden seal once warmed up and fluid get's thinner its leaking past seal's plus with the milage these transmission are known to go out around 170 k
 

billr

wrench
Staff member
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Mar 12, 2007
Messages
7,331
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BP, is the Lube-Gard "red" worthwhile as a "Hail Mary" play here?
 

Jgentry87

Newbie
Joined
Dec 16, 2021
Messages
3
Points
1
sounds like harden seal once warmed up and fluid get's thinner its leaking past seal's plus with the milage these transmission are known to go out around 170 k
Any ideas on anything I can do to make it last a couple more months? Only vehicle I have at the moment.
 

grcauto

Hero Member
Joined
May 29, 2014
Messages
930
Points
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Any ideas on anything I can do to make it last a couple more months? Only vehicle I have at the moment.
You can try something like trans fix and it may give you a little more time but that tranny will need rebuilding before long.
 
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