I HAVE A GMC JIMMY YR 2000 THAT I REPLACED THE ...

2000 GMC Jimmy

Tiny

Anonymous

March, 19, 2013 AT 3:11 PM

I have a gmc jimmy yr 2000 that I replaced the motor in. Since installing the new motor the truck bumps while going appx 55-70mph. I have replaced the air flow sensor and that did not fix the problem since it was throwing a code for it. I have had my mechanic check it twice and it is still doing it and he can't seem to find the problem. It almost feels like I am hitting a small speed bump while driving 55+ mph. Any help would be appreciated.

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