The guitar zombie
TYF Newbie
- Joined
- Jun 1, 2017
- Posts
- 20
- Reaction score
- 9
thanks all. SOLVED. Maybe. I took the starter out and noticed the electrical lead’s screw was loose. See my video - Black around nut indicating arcing. Why did I say mabe? I will install a new starter soon.
I am having issues with my 2015 Yukon Denali Not cranking - battery acting dead, no error codes. I was suspecting a bad starter that may be putting too big of a load on the battery. Setting that aside for the moment, I removed the battery and it was checked and determined to be bad. I bought a new battery and installed it. The car still wouldn’t start causing the battery voltage to drop fairly sharply while trying to start. So…. I figured, new battery - not fully charged. So I tried to jump it.
I placed the jumpers on the Denali first ( correct order - no positive terminal contact with ground), then I connected the other positive lead to my Honda (which was running) and then connected the ground lead to the Honda’s battery and mega Sparks flew And the Honda Pilot shut off. Not just a few sparks, it was like the battery was going to explode, so I yanked the jumpers off suspecting I swapped them (never would, never had). The jumpers were correct. THE HONDA RESTARTED NO PROBLEM. My Denali seemed also fine as the dash came on and there were still no error codes. There was no indication (weld marks) anywhere consistent with the sparking.
It was as if the sparking caused something in the Denali to “let go” and it started. Not sure of the integrity of the Denali so we didn’t drive it today. When I tried to start the Denali today, the battery was dead. I am pretty sure nothing was on causing the drain, but time will tell.
Battery trouble? (although new). Engine or starter trouble? In the past there were times of hesitation when starting. Most times not. This could indicate a number of things like a marginally charged battery (now replaced). Or possibly a failing starter. With the new battery, time should tell.
But my confidence is low at this point I wonder if anyone has had similar problems, insight or suggestions. TIA
I am having issues with my 2015 Yukon Denali Not cranking - battery acting dead, no error codes. I was suspecting a bad starter that may be putting too big of a load on the battery. Setting that aside for the moment, I removed the battery and it was checked and determined to be bad. I bought a new battery and installed it. The car still wouldn’t start causing the battery voltage to drop fairly sharply while trying to start. So…. I figured, new battery - not fully charged. So I tried to jump it.
I placed the jumpers on the Denali first ( correct order - no positive terminal contact with ground), then I connected the other positive lead to my Honda (which was running) and then connected the ground lead to the Honda’s battery and mega Sparks flew And the Honda Pilot shut off. Not just a few sparks, it was like the battery was going to explode, so I yanked the jumpers off suspecting I swapped them (never would, never had). The jumpers were correct. THE HONDA RESTARTED NO PROBLEM. My Denali seemed also fine as the dash came on and there were still no error codes. There was no indication (weld marks) anywhere consistent with the sparking.
It was as if the sparking caused something in the Denali to “let go” and it started. Not sure of the integrity of the Denali so we didn’t drive it today. When I tried to start the Denali today, the battery was dead. I am pretty sure nothing was on causing the drain, but time will tell.
Battery trouble? (although new). Engine or starter trouble? In the past there were times of hesitation when starting. Most times not. This could indicate a number of things like a marginally charged battery (now replaced). Or possibly a failing starter. With the new battery, time should tell.
But my confidence is low at this point I wonder if anyone has had similar problems, insight or suggestions. TIA
Last edited: