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My 05 pontiac montana shifts hard when warm up, fine when cold !

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  • 417 Answers

You may have to much fluid in trans. When fluid heats up it expands. Make sure you chk when trans is warm and running also vescosity may be to thin after warming you should change out your fluid if it is old and add a additive to the fluid. Lucas trans slip is real good one to use.

Posted on Nov 01, 2012

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Posted on Jan 02, 2017

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SOURCE: replace thermostat 2003 pontiac montana

yes but with the right shaped wrenches and tiny hands it can be done without removing the exhaust crossover pipe

Posted on Oct 16, 2008

dgjtex
  • 405 Answers

SOURCE: 2005 Pontiac Montana SV6 heater blows cold when slowing to idle

How cold is it there and does your engine cool down any while going slow? If it does it may mean you need a hotter thermostat installed, My first thought would be to check the coolant level in the radiator and the coolant reservoir! Hope this helps and Merry Christmas

Posted on Dec 23, 2008

  • 1 Answer

SOURCE: Where is the cabin air filter on my 05 montana?

In the Glove compartment on the left hand side there is a black snap on cover pull it from the bottom and it will come open. There is 2 filters in this spot.

Posted on Jun 28, 2009

csmock132
  • 4669 Answers

SOURCE: I have a 2000 Pontiac Montana and the code states

Yes it is hard to change. It is in the side cover of the transmission. The transmission will need to be removed to replace it.

Posted on Jun 30, 2009

Molson02536
  • 3854 Answers

SOURCE: 2000 pontiac montana air conditioner driver side

That is correct, the air blend door actuator. "flapper valve" may need to be replaced or cleaned and free from binding up. Good luck and hope this helps. If there is an Auto Zone in your area, they can order the part you need and give you the step by step instructions to removing the old actuator and replacing it if it's damaged. Good luck and keep me posted, be glad to help. 

Posted on Aug 22, 2009

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2005 Pontiac Montana SV6 heater blows cold when slowing to idle


How cold is it there and does your engine cool down any while going slow? If it does it may mean you need a hotter thermostat installed, My first thought would be to check the coolant level in the radiator and the coolant reservoir! Hope this helps and Merry Christmas

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