I just recently 3 days ago bought my 1st 1999 Blazer 4X4 2 Door. It has of course the 6 Cyl with pushbutton 4 wheel drive.

I noticed that when I got it from the dealership the fuel gauge was jumping all over the place and they kept it 3 days and it was fine yesterday.

Today I got 4 new tires and an alignment done as I went up in size to a beefier larger tire. I went from 235/15 to a 30.5 in size.

I now notice that the fuel gauge is jumping all over the place again does anyone have any suggestions?

They for some reason did have my battery disconnected as the clock had lost its setting.

 

i answered this in ur New Member Area post but most likely its ur fuel sending unit inside ur tank

 

Exactly why the 'New Member' area is for new member introductions only and all tech questions should be in the tech section.

 

Sorry about the posting in the wrong place in advance.

The fuel sending unit is what they supposedly replaced at the dealership and it was working fine for one day then after the tire installation and alignment it is now all screwed up again.

Ughhhhh

 

Take it back and have them to fix what they said they fixed.

Changing tires should not require disconnecting the battery, you might check the positive battery terminal if the battery is still original AC/Delco they are known for loose terminals inside the battery...

 

Common problem. I vote for the fuel sending unit inside the tank as well.

 

As Mark (20Blazer00) has already said, if they claim to have replaced the fuel level sending unit, then they should fix it again if it isn't right.

 

I agree with them, their fault, their fix

 

Thanks for the replies. Taking it back tomorrow to be looked at and fixed