The battery shows around 10 volts. Kinda low. But I would think it would still be enough to start. Also, the dash lights all come on. When I turn the key to ignition, it will not even try and turn over. Everything but the check engine and battery light turns off. Any help to troubleshoot would be good.

 

10volts with next to no load is very low. If you have a battery charger, try charging it back up.

How old is the battery? It's possible you have a dead cell. If you have alternate transportation, you can remove the battery and take it to an Advanced Auto or Autozone and have them test it. If you are able to get the truck started, you can take the whole truck to one of the aforementioned stores and they can check the alternator as well.

 

10v is WAY to low to start your blazer!





percentage of charge
12 volt battery voltage
specific gravity

100
12.70
1.265

95
12.64
1.257

90
12.58
1.249

85
12.52
1.241

80
12.46
1.233

75
12.40
1.225

70
12.36
1.218

65
12.32
1.211

60
12.28
1.204

55
12.24
1.197

50
12.20
1.190

40
12.12
1.176

30
12.04
1.162

20
11.98
1.148

10
11.94
1.134

 

yea that is way to low to start a vehicle charge it if it holds a charge good if not time for a new one