My 1999 GMC Sierra Classic usto run on e10 but now when I put it in, It doesn’t want to start and bucks when I use e10, so now I have to use unleaded, what is wrong with it?

Asked by Jul 27, 2018 at 03:44 PM about the 1999 GMC Sierra 2500

Question type: Maintenance & Repair

1 Answer

171,645

Maybe you need a tuneup but I would use the real gas since it is available.

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