My blazer does not turn on

Greetings Ristaman, check the connections that reach the computer, check that are not sulfated, to the first indication of contamination you must also open the computer, I had a similar experience and turned forward failure between the connectors and filter water and dirt, causing a failure as you comment, even on the board marked empty tank (it really was full) among other erroneous data (always marked cold engine) The computer also handles the board. Try first to clean the contacts in both parties (connector and computer) and try again to turn on, tell us how it went.

They track if you lose the injection signal you must have problems with the crankshaft position sensor (CKP) or camshaft position (CMP) check that you have a signal towards the computer, in one cable you must have land and in the other cable you must have 5 volts or 12 volts one of the three cables of the sensors is broken or one of the sensors is damaged. The computer needs that signal to send the integrated and spark signals check there and turn on the vehicle