1999 gmc 1 ton

Asked by Aug 19, 2010 at 09:18 PM about the GMC Sierra C/K 3500

Question type: Maintenance & Repair

I have a 1999 gmc 1 ton dually.  It's 2 wheel drive.  All of the sudden on a road trip the trans started to slip.  Now it will go about 50 miles on a cold start then start slipping.  I have changed the filter and fluid and it still only goes about 50 miles then starts up again.  I can only go about 55 once it starts acting up.  Please advise.  It is a automatic trans.

2 Answers

25

when ur pickin up speed does it slip once its shifted into another gear??? if so my trany did that and i had to get it rebuilt

25

First, check the obvious: fluid level and color. If it's low, it could easily be causing your problem. If it's anything but red, it's been too hot at some point and your fluid is scorched and needs to be replaced. If it's not something simple like that, you might be looking at a rebuild/replacement.

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