Having problems with your 1998 GMC Sierra ?

1988 GMC Sierra shifts strange when cold normal when warm

\015 When driving my 1988 GMC Sierra is doesn't shift well and sometimes is very sluggish until it is warmed up. I would like to try something simpe like add transmission fluid. But I'm not sure if I should add its running or when its cold.\015 Posted / edited by AnonymousUser on : 08-08-2022

Answers :

You always add transmission fluid while the car is at running temps because transmission fluid expands when it's hot.
I see if it need any add when the truck is warm and see were at on the dipstick i guess and then add
Repair Help & Product Troubleshooting for 1998 GMC Sierra

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