I have a 92 sonoma with the 4.3. It sat in my yard 6 months because of the transmission. I get her all back together and now the CEL is on. I try to check the code by jumping AB together like the book says and it doesn't flash it just stays solid. I though about removing the battery cable and did it for 30 min but as soon as I start it the CEL is on. Then I though maybe it wasn't holding the code in memory so I used a memory saver and same old stuff different day. Engine lopes real bad and sometimes stalls. Still has all the power in the world but don't know what to fix. I have tuned it up same old problem. HELP!!!!