1998 Chevy Trailblazer 4 wheel drive. Won't start. New battery new alternator. Sounds like it should when you turn the key and try to start it. It started to overheat and it wouldn't start again after I shut it off. The temp gauge showed it was getting hot but it was only showing a little higher than normal. Checked all fluids and added water. Any ideas where I should begin to identify the problem and buy the correct replacement part?
A car won't start for a number of reasons. You would need to go back to basics.
Check for a spark at the spark plugs, if you have spark at the plugs then go to the next step. Check to see if you have fuel pressure, if you don't have fuel pressure the check fuses for the fuel pump, fuel pump relay, fuel pressure regulator and don't forget the fuel filter.
If you have spark, fuel pressure and a injector pulse then have someone scan the computer for any trouble codes that may be in the computer memory. Repair any codes that may have been set.
Try these few suggestions and get back to me with the results.
Not quite sure by the question whether we're talking about a crank no-start, or no-crank condition?