CaptainXL said:The first thing to do would be to replace the battery. Then with the key on and engine off listen for the pump whirring away back by the drivers side rear wheel. Check the fuel pump fuse next and see if it's blown.
If you still don't hear anything try kicking or beating on the bottom of the tank with a rubber mallet. See if that kick starts the pump.
Are you familiar with checking for voltage and fuses?
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jrSS said:Replace battery. And yes... the only awd trailblazer is the SS.