Gauges Haywire- no start

[Mcsumner91]

Ok, 2014 sierra 1500, 5.3, 4x4, crew cab. Doe.

 

Had the dealer perform 4 recalls and fix an oil leak. During this time I know the battery was disconnected as I lost my saved trip info.

 

A couple days later I go to crank and receive service theft deterrent several times but it finally cranked normally. After a few more normal starts then again received the message service theft detterent.

 

Flash forward to this morning and the truck gives me several messages including service theft, stabilitrak, brake assist, 4wd, and others and the ECM relay is clicking like crazy under the hood. No start. Not even an attempt. I pull the relay for the ECM and it tries to start but doesnt. I put it back in and I get nothing. Not even a click from the relay. I tried disconnecting the batt cables and resetting the computee but the problem persists. I pulled the battery and had it tested and it read good 100% charged. 12.9v and no bad cells on the load test. Every time i put the key in all electrical lights come on, radio etc. Flashes service everything, and all lights go off on key turn.

 

Any ideas?

 

Thanks

[Mcsumner91]

 

 

Video of problem

[stevev]

Kind of sounds like this guy's issue, but maybe just a coincidence. Can't hurt to check that ground he mentions:

 

http://www.gm-trucks.com/forums/topic/198500-2014-and-up-guys-with-funky-electrical-issues/

[Justin101714]

Do you happen to have a second key?

 

 

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[Z45]

Do you happen to have a second key?

 

 

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Check this, Similar thing happened to me and it was an unprogrammed key. Salesman screwed up and never programmed the extra key.

[Mcsumner91]

I do, but I won't be able to try it til next week. The key I have has worked fine up until now. I'll let y'all k ow what the dealer says this week. Thanks!