Cody27
TYF Newbie
Good morning guys. I've read through probably fifty threads of similar issues and fixes, to no avail for me.
My 2015 yukon xl denali developed a no start issue out of the blue. One day I started it and the gauge cluster was black, nothing. Shut it off, removed battery cables to reset and it started like normal. Fast forward 2 weeks, another problem.
My wife drove it like normal and shut it off at her destination. Went to restart a couple hours later and nothing happened. Gauges lit up, every service message you can thunk of was on but it wouldn't crank or start. Unhook battery, checked voltage (12.58v) hooked it back up and no luck. Attempted to start with the fob, fired right up with no gauges or lights on. Wouldn't shut off... pulled fuse to get it to shut off.
Tried to start again from push start button and nothing. Push it once, everything lights up (gauges, radio, hvac etc) push it again and everything fades away and goes black.
Disconnected under hood fuse box and wiring connectors to check for corrosion, all clean. Reinstalled and the truck fired right up. Drove it home, shut down like normal. Tried to start again and no juice. Same as before.
Battery is 4 months old, checking out at 12.58v. To be sure it didn't have a dead cell, replaced with a brand new interstate from my car for diagnostic purposes and no change to symptoms.
Replaced negative battery cable and ground down/cleaned both front frame rail grounds on driver and passenger side. Cleaned both engine block grounds. Cleaned firewall ground.
Removed, inspected and reinstalled both grounds on dash by tweeters on driver and passenger side, no pinched insulation or anything.
I'm getting full 12.5v to everything under the hood, all fuses and power supplies. Checked every single fuse in all 4 fuse panels, all good.
Removed positive starter cable, Cleaned and reinstalled.
Checked all wiring going into ecm and bcm, didn't find any broken, pinched or shorting wires.
As of right now the truck still will not crank. One push of the start button makes the gauges come on with all the service messages, but I do not have power to rear hatch (cannot open it from fob or button). Windows and radio work.
I've tried both key fobs, also putting them in the key fob slot in centre console (no change).
I've removed drivers side kick panels and inspected wires, don't see anything pinched.
I'm aware that I will need to take it in and have it scanned with the appropriate scanner but I really want to try and fix it at home. Not in any mood to deal with the dealer.. I tried to order the negative battery cable last week and they told me $192 and a few months because it was on international back order. I got an ac Delco replacement from rockauto in 3 days (I'm in canada) for under $100.
Am I missing something? I'm going to try jumping the starter today.. other than that I'm not sure what else to do.
Sorry for the long post just trying to save time on suggestions!
My 2015 yukon xl denali developed a no start issue out of the blue. One day I started it and the gauge cluster was black, nothing. Shut it off, removed battery cables to reset and it started like normal. Fast forward 2 weeks, another problem.
My wife drove it like normal and shut it off at her destination. Went to restart a couple hours later and nothing happened. Gauges lit up, every service message you can thunk of was on but it wouldn't crank or start. Unhook battery, checked voltage (12.58v) hooked it back up and no luck. Attempted to start with the fob, fired right up with no gauges or lights on. Wouldn't shut off... pulled fuse to get it to shut off.
Tried to start again from push start button and nothing. Push it once, everything lights up (gauges, radio, hvac etc) push it again and everything fades away and goes black.
Disconnected under hood fuse box and wiring connectors to check for corrosion, all clean. Reinstalled and the truck fired right up. Drove it home, shut down like normal. Tried to start again and no juice. Same as before.
Battery is 4 months old, checking out at 12.58v. To be sure it didn't have a dead cell, replaced with a brand new interstate from my car for diagnostic purposes and no change to symptoms.
Replaced negative battery cable and ground down/cleaned both front frame rail grounds on driver and passenger side. Cleaned both engine block grounds. Cleaned firewall ground.
Removed, inspected and reinstalled both grounds on dash by tweeters on driver and passenger side, no pinched insulation or anything.
I'm getting full 12.5v to everything under the hood, all fuses and power supplies. Checked every single fuse in all 4 fuse panels, all good.
Removed positive starter cable, Cleaned and reinstalled.
Checked all wiring going into ecm and bcm, didn't find any broken, pinched or shorting wires.
As of right now the truck still will not crank. One push of the start button makes the gauges come on with all the service messages, but I do not have power to rear hatch (cannot open it from fob or button). Windows and radio work.
I've tried both key fobs, also putting them in the key fob slot in centre console (no change).
I've removed drivers side kick panels and inspected wires, don't see anything pinched.
I'm aware that I will need to take it in and have it scanned with the appropriate scanner but I really want to try and fix it at home. Not in any mood to deal with the dealer.. I tried to order the negative battery cable last week and they told me $192 and a few months because it was on international back order. I got an ac Delco replacement from rockauto in 3 days (I'm in canada) for under $100.
Am I missing something? I'm going to try jumping the starter today.. other than that I'm not sure what else to do.
Sorry for the long post just trying to save time on suggestions!
