Shifting hard in traffic

2004 PONTIAC GRAND PRIX
170,000 MILES • V6 • 2WD • AUTOMATIC
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SUSEN
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  • 1 POST
I have noticed for the past few years that only when I am in traffic that my automatic transmission likes to act manual. If I am in constant stop and go traffic then after about ten minutes or so when I press on the gas I notice that every five mph it shifts hard so it jerks forwarded. When I get up to normal speed and constant movement it gets less and less until it goes away. Whats wrong?
Aug 22, 2016 at 7:47 AM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
check fluid if you have a dipstick if not a mechanic will have to do it. if color is dark brown or black there is something internally wrong. then have a transmission professional scan for codes.
Aug 22, 2016 at 7:57 AM
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