Hesitation at highway speeds - 1999 Suburban

[94Sierra4x4]

Whatever it turns out to be - please update with your results..

I have similar symptoms - going to go ahead and replace fuel pressure regulator.. i'll update when I get it in the truck.

 

[Gatorboy]

Whatever it turns out to be - please update with your results..

I have similar symptoms - going to go ahead and replace fuel pressure regulator.. i'll update when I get it in the truck.

Check your timing man! It fixed mine on my TBI motor