Cold weather, srvc lights come on, suburban goes into limp mode, pull over, turn off, sit for a bit, back on the road no warning lights. Repeated every time it was below 10 deg. Outside. Got a few codes (misfire, etc.), corrected and ran fine. Started hapening again, Colorado pot hole, assumed bad ground. Replaced battery, fixed problem for a few months, checked all grounds and serviced in the engine bay (block, frame, and engine to firewall). I can't find a publication that shows all grounds on a 1500 suburban.

Well here I am again, all service lights come on with key in, no door locks or windows or chime, but ac and radio and sunroof work as well as interior lights, and no start, no crank, no fuel gauge, no battery gauge. im thinking a bad ground, relay, ECM, BCM, wire, or ignition switch.

Im going to pull the pass tire and see if the starter is connected, maybe replace it for the fun of it (200000+ miles), then pull the steering column cover and see if there is a loose wire in the column, fuses are good in the engine bay, and on the bcm. Battery is on the charger, was low when I came out this morn.

Without going through a full wire trace and wiggle test is there other grounds that reside aft of the firewall that i can check? Anyone else have similar problems? There is also a "lock" icon on the dash. Is this an issue with the factory security system and ignition switch? My keys have no chips, and my remote lock no longer works.

 

post your vehicle info please. Can't help you without it.
Have you tried running a diagnostic scan?

 

Sorry about that, 2010 suburban 1500 LT, 5.3l

I have run a diag recently with this no start problem, no codes. I'll post what diag tools I have here in a bit.

 

low battery can cause multiple faults like that. Get your electrical system in good working order ... load test alternator + battery, make sure connections are all good, etc.
Reset codes and see what comes back.