98 sonoma 2.2l won't start , headlights won't come on fuel pump don't come on some of the dash lights are not coming on and there is some kind of a relay to the left of the ign sw making clicking noise before this happened it did crank up an ran for about 15 secs and shut it self off
Your Battery is Corroded or Bad.... Pull your Battery, Clean the Terminals, Charge your Battery and have it tested and if it is bad, replace it. If it is Good, then Clean the Terminals and the Post REALLY GOOD and reinstall and your problem will go away. If your Battery is Good, test your Alternator. Your Battery should have 12.6-12.8 Volts. When it is Running, it should be 13.4-14.6 Volts Depending on your Alternator and Voltage Regulator
SOURCE: 2003 Sonoma does not turn-over
U have lost the battery, check the cables, if they are clean (no corrsion) replace the battery, modern sealed batteries fail like this, crank fine and then puff nothing, happened to at least 5 times over the years and saw it all the time at work.
SOURCE: 2001 GMC Sonoma. SLS
Tilt the steering wheel down all the way and see if it starts, if it does then there is a main power wire loose in the steering columb. Thats all which comes to my mind at this time.
SOURCE: 1998 gmc sonoma if we turn the key to crank the
check battery volts should be 12.6 volts battery either weak,or battery cables could be loose or battery cables and post has corrossion clean corrossion from both cables and post using small steel brush clean battery post with.first turn off radio before disconnecting negative battery cable.
Now the crank sensor has no voltage supplied to it its just an induction sensor ,in this case i suspect dirty connections in the multiplug ,test the old one to make sure its working which is easy to do with a multimeter if its failed then its getting a back feed when you shut it off from the ECU and to be honest i think you may need a dealer diagnostic with their special software a code reader will not be able to do this for you ,you could test for this yourself with a decent multimeter ,disconnect the multiplug and read from ignition side with ignition off and see if you get a voltage as this will burn the induction coil of the sensor .
SOURCE: '98 sierra, k1500, 5.7 won't start until cold crank for 15 seconds
COuld be some problem with the starter, sometimes, when the starter warm, occurs this no start condition.
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the problem with my 98 sonoma was the nut on the grounding post behind the alt was loose looking through the wheel well flap at the harness the stud in the block is right behind the harness to where you have to move it out of the way and so the nut was loose causing me lots of problems
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