Help! I have a 95 blazer with the 4.3. Has a very rough idle after start up. completed a complete tune up and no change. Found a blown intake gasket, replaced and it made very little change. I cannot retrive the codes, when I plug my scaner in it reads error. The ck engine light is on. Drives perfrect from 1100rpm on up. today it is very hard to start now. have to cycle the key several times befor trying to start. Pretty sure I have a fuel pump problem now as well.

 

Your computer is failing. "Error" is the universal DTC meaning the computer is screwed. [&:]