2003 Impala fails to shift into OD 'til it warms in cold weather

I have the same issue with my Impala, except mine is an 2001 with over 110,000 miles on it. It's been doing that for the last couple winters. If it matter's, My chevy truck does the same thing. It's a 1999 silverado 2500 with over 100,000 miles also. Must be a GM thing. No problems though, just won't shift in OD till it warms up a little bit. I have the same issue with my Impala, except mine is an 2001 with over 110,000 miles on it. It's been doing that for the last couple winters. If it matter's, My chevy truck does the same thing. It's a 1999 silverado 2500 with over 100,000 miles also. Must be a GM thing. No problems though, just won't shift in OD till it warms up a little bit.