Battery drain problem.... Possibly Door Lock relays?

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Ballaholyk84

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Hows it going Family?

I have a 1997 Tahoe LT 4DR 4x4

I bought a brand new Exide Edge AGM Battery for it about 5-6 months ago. Works like a dream and has plenty of power. No issues at all.

About a month ago, I went to fire up the truck and it was dead. Hmmm..... Could I have gotten a faulty battery? Worked great for 4-5 months without issue.

I jump the truck, let it run and take it for a good solid hour drive, let it charge, all is well. For 2 days. Go back to start it up one morning and nothing.

I did however notice that my door locks dont work anymore. I pressed the remote unlock and nothing happened. Once I got in the truck I noticed the door switch wouldnt work either. I can hear a click coming from under the dash as if it wants to work, but the locks never unlock/lock.

I got under the dash and removed the relay above the gas pedal (towards right side of driver cockpit) that I could feel clicking when I hit the lock switch. Once I removed it the doors would unlock when pressing unlock but would not lock. I could lock the vehicle manually by pushing the lever down and unlock the doors with the remote or the switch but it wouldnt lock. I hear clicking coming from another relay by the steering column but have yet to remove that one.

I plugged the relay I had previously removed back in thinking I can just manually unlock the doors until I get it figured out.

Got the battery charged and all was well for about 4-5 days. Woke up this morning and the battery is sitting at 0.0. Dead as all get up.

Checked all my fuses and none are blown. I read to check #13 specifically if door locks arent working. Looked fine but I replaced it with a new one anyways just to be safe and still the same issue.

I have a Volt/Ohm Meter I plan on checking some things and trying to fiond where the drain is coming from but this is where I hit a wall. I have no idea where to start. I dont want to take the scenic route trying to find a problem that I can figure out in a couple steps possibly.

I honestly believe its related to the door locks all the sudden not working. If the relay I had originally removed is shorted out and draining my battery can I remove said relay again and leave it undone for the time being or will that cause other problems?

Any help would be greatly appreciated. I can run the Case Drain test as well but I dont think its a coincidence that the door locks went out at the same time my battery began to die.
 

SunlitComet

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Most indicative way is to charge the battery and remove the fuses in the dash. Stick a meter on the battery and look for changes while inserting each fuse back into its original place.
 
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Ballaholyk84

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I appreciate the help. SO I hooked up my Meter to the Neg Cable and the Neg Post and this is what is was spitting out to me. I pulled every fuse on the side of the dash as well as all the fuses under the hood. Nothing changed what so ever. I pulled the Neg from the Alternator as well and nothing either. What would be the next step from here?
IMG_0132_zps923e146a.jpg
 
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