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Delayed shifting in temperatures below freezing

M

Mbeejonhn

New member
I'm having a strange issue with my 2005 grand prix gtp comp g. it only happens in really cold below freezing temperatures. There's like a delay in shifting. After it's warmed up it goes away once I restart the car.Is this normal?
 


My car did the same thing when I had a front mount Hayden Trans cooler and I bypassed the radiator. The problem was fixed when I rerouted the lines to include the radiator in my trans cooling system.
 
See if you can borrow a scan tool and monitor trans temp. Also how many miles on the car? When was the last trans service? How does the trans fluid look?
 
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