Having problems with your 1999 GMC Sierra 3500 ?

When you're idling or driving, there are short surges in power when the car just seems to take off. As you keep driving, it loses power to where you can only go 10 to 20 miles per hour. The next day we started it up and drove it for 10 min. and then it started the surges again.

Posted / edited by AnonymousUser on : 12-11-2018

Answers :

I would first check the fuel filter to see if it is clogged. If that is good, test the fuel pump to see if it is working properly. Next check the fuel injectors are not clogged.
Repair Help & Product Troubleshooting for 1999 GMC Sierra 3500

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