CapnCrunch
TYF Newbie
- Joined
- Aug 22, 2021
- Posts
- 11
- Reaction score
- 9
Hi all,
I've read some the threads that somewhat relate to my issues... mine seem much more intense.
First- vehicle is '11 Yukon SLT w/ approx 95K miles, new to us 15 months ago. Shortly after purchase @ 70k miles (and I suspect for previous owners as well, as we purchased under book value from a dealer) the electrical started acting odd. The whole dash will "flash." I use this term to describe a host of events that culminate in the same problem... sometimes it's just a seatbelt light that comes on and flashes for a second or two, to as severe as "Service stabilitrac" light coming then leaving. My wife and I have come to understand what this all means... after stopping the rig and turning the key off the entire vehicle is electrically dead-no lights, no horn... just dead (except a rapid, faint clicking noise from the driver's door) which requires simply opening the hood and lifting on the negative battery cable and putting it back... rig will start and do fine until the next episode.
To save a few posts at least, have had it into a local battery store chain, also Les Schwab, PNW tire chain w/people I've done business with for years... all say battery is good, replace battery cables. But at least at Les Schwab I was able to get the issue to duplicate w/service tech there (when event signaling event was imminent stopped in and left motor running until he came out.) He witnessed the vehicle at shutdown go dead, me touch battery cable, vehicle start and run fine... he had me shut it down, tested battery w/and w/o load... had me start again, shut it down and then he inspected and tested security of all connections (including reefing on negative cable thinking it was a loose connection) all to no issues apparent.
I seek advice as the issues this week have escalated to the point of feeling maybe it's becoming unsafe to drive... the last time something happened (yesterday) the whole dash went dead, all gauges went to zero, flashed to full as if just started, vehicle acted as if it shifted to neutral (motor revved up as if out of gear.)
One thing that is possibly more related to (noobi-ness warning!) fuel saver system that turns off 4 cylinders... vehicle surges somewhat without that system actually switching from 8 to 4 or visa versa.
I forgot to mention... other signaling symptoms are lights - sometimes dash, headlights, interior lights - varies at random.
That's my story, looking for insight from the more experienced with these modern marvels that always seem more complicated but not always for the better.
Mark
I've read some the threads that somewhat relate to my issues... mine seem much more intense.
First- vehicle is '11 Yukon SLT w/ approx 95K miles, new to us 15 months ago. Shortly after purchase @ 70k miles (and I suspect for previous owners as well, as we purchased under book value from a dealer) the electrical started acting odd. The whole dash will "flash." I use this term to describe a host of events that culminate in the same problem... sometimes it's just a seatbelt light that comes on and flashes for a second or two, to as severe as "Service stabilitrac" light coming then leaving. My wife and I have come to understand what this all means... after stopping the rig and turning the key off the entire vehicle is electrically dead-no lights, no horn... just dead (except a rapid, faint clicking noise from the driver's door) which requires simply opening the hood and lifting on the negative battery cable and putting it back... rig will start and do fine until the next episode.
To save a few posts at least, have had it into a local battery store chain, also Les Schwab, PNW tire chain w/people I've done business with for years... all say battery is good, replace battery cables. But at least at Les Schwab I was able to get the issue to duplicate w/service tech there (when event signaling event was imminent stopped in and left motor running until he came out.) He witnessed the vehicle at shutdown go dead, me touch battery cable, vehicle start and run fine... he had me shut it down, tested battery w/and w/o load... had me start again, shut it down and then he inspected and tested security of all connections (including reefing on negative cable thinking it was a loose connection) all to no issues apparent.
I seek advice as the issues this week have escalated to the point of feeling maybe it's becoming unsafe to drive... the last time something happened (yesterday) the whole dash went dead, all gauges went to zero, flashed to full as if just started, vehicle acted as if it shifted to neutral (motor revved up as if out of gear.)
One thing that is possibly more related to (noobi-ness warning!) fuel saver system that turns off 4 cylinders... vehicle surges somewhat without that system actually switching from 8 to 4 or visa versa.
I forgot to mention... other signaling symptoms are lights - sometimes dash, headlights, interior lights - varies at random.
That's my story, looking for insight from the more experienced with these modern marvels that always seem more complicated but not always for the better.
Mark
