Chevy Suburban 5. 3: Entire Bank Misfire
video description
If Chevy engineers could apply what you know to building these trucks to make the wiring connections last a little longer, then Chevy could guarantee that they would run more than 3 years or 36, 000 miles, which would be a new milestone for Chevy.
Date: 2021-11-23
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Comments and reviews: 9
Jennifer
I have a good one for everyone here. same vehicle (2007 Suburban) same engine (5. 3 v8.
Mine involves brake lights.
Passenger side rear top bulb had a filament go out so lights worked but brake light didn't on that specific bulb.
Changed bulb. Standard procedure.
If I use either blinker the reverse lights dimly illuminate and sorta flash or pulse brighter dimmer with the blinker. No blinkers and brake applied the reverse lights dimly illuminate. But. right blinker hyperflashes when brake applied.
Pull that bulb back out and it stops acting up. Swapped for another brand new bulb same issue. Verified correct bulb.
Visible inspection found no breaks or tears in wiring. no crusties or anything to indicate WHY?
All OEM stuff (no aftermarket or LED upgrades.
I'm at a loss. Didn't snatch on it or pull too hard, nothing visibly broken or off (no giant red flag.
My next thought is the harness where they all plug into under the rear of the vehicle by the spare tire.
Should I fire parts cannon & replace that wiring piece (runs from connector up by corner of bumper into the taillight assembly & has every bulb socket for that side. I got some electronic safe cleaner & dielectric grease if I can try to clean and grease it.
What am I looking for! Help?
My experience from watching the genius himself Eric O is the wiring is grounding itself somewhere with another path not intended. But nothing is crossed or visibly showing where or how. I JUST removed a bulb inserted new one and reverse procedure put it back together.
reply
I have a good one for everyone here. same vehicle (2007 Suburban) same engine (5. 3 v8.
Mine involves brake lights.
Passenger side rear top bulb had a filament go out so lights worked but brake light didn't on that specific bulb.
Changed bulb. Standard procedure.
If I use either blinker the reverse lights dimly illuminate and sorta flash or pulse brighter dimmer with the blinker. No blinkers and brake applied the reverse lights dimly illuminate. But. right blinker hyperflashes when brake applied.
Pull that bulb back out and it stops acting up. Swapped for another brand new bulb same issue. Verified correct bulb.
Visible inspection found no breaks or tears in wiring. no crusties or anything to indicate WHY?
All OEM stuff (no aftermarket or LED upgrades.
I'm at a loss. Didn't snatch on it or pull too hard, nothing visibly broken or off (no giant red flag.
My next thought is the harness where they all plug into under the rear of the vehicle by the spare tire.
Should I fire parts cannon & replace that wiring piece (runs from connector up by corner of bumper into the taillight assembly & has every bulb socket for that side. I got some electronic safe cleaner & dielectric grease if I can try to clean and grease it.
What am I looking for! Help?
My experience from watching the genius himself Eric O is the wiring is grounding itself somewhere with another path not intended. But nothing is crossed or visibly showing where or how. I JUST removed a bulb inserted new one and reverse procedure put it back together.
reply
Wrightwaycab
Had a Wire Gremlin, Ghostly, Phantom issue in a friends 1994 Chevy 6. 5L turbo diesel. Started looking at around dusk and was quit dark when i opened the hood. There was an strange orange glow coming from behind the head at the fire wall. Mind you i had turned all a/c full and headlights and everything power hungry on before i opened the hood. A single copper ground strap attached to the motor and firewall was glowing red enough to cook on. All 4 of the other grounds were totally corroded away. And with a mechanical fuel pump it didnt need spark. BTW the fuel bowl was just in front of it! Could have been a fire!
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Had a Wire Gremlin, Ghostly, Phantom issue in a friends 1994 Chevy 6. 5L turbo diesel. Started looking at around dusk and was quit dark when i opened the hood. There was an strange orange glow coming from behind the head at the fire wall. Mind you i had turned all a/c full and headlights and everything power hungry on before i opened the hood. A single copper ground strap attached to the motor and firewall was glowing red enough to cook on. All 4 of the other grounds were totally corroded away. And with a mechanical fuel pump it didnt need spark. BTW the fuel bowl was just in front of it! Could have been a fire!
reply
Av8tore71
The wifey and I just brought home a 2022 Chevy 2500HD High Country with the 6. 6L yesterday and no sooner did I pull into the driveway a check engine light comes on. Either this is a start of a series of problems I'm going to have with this truck because I told the wife this will be my last vehicle I'll buy ever or it's because it's a Chevy. Time will tell later today when I take it back to the dealership today when it opens up
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The wifey and I just brought home a 2022 Chevy 2500HD High Country with the 6. 6L yesterday and no sooner did I pull into the driveway a check engine light comes on. Either this is a start of a series of problems I'm going to have with this truck because I told the wife this will be my last vehicle I'll buy ever or it's because it's a Chevy. Time will tell later today when I take it back to the dealership today when it opens up
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Golem1
From salt water marine engines to salt on streets on long island ny I can tell you any wires which have 12vdc positive and grounds dissolve turn green in insulation and crusty at connection s.
Just a matter of time.
We spray all connections with CRC oil grease all connections ground spots.
Excellent videos.
Thanks Eric
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From salt water marine engines to salt on streets on long island ny I can tell you any wires which have 12vdc positive and grounds dissolve turn green in insulation and crusty at connection s.
Just a matter of time.
We spray all connections with CRC oil grease all connections ground spots.
Excellent videos.
Thanks Eric
reply
Russell
Boring video, hardly!
As long as the diagnosis ride-along is documented, I can do the brain-dead monkey work to R&R parts and/or repair wires.
It's rather fun to watch the problem determination effort much like a Jeopardy! game show -- try and get the answer or next decision tree step before the contestants.
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Boring video, hardly!
As long as the diagnosis ride-along is documented, I can do the brain-dead monkey work to R&R parts and/or repair wires.
It's rather fun to watch the problem determination effort much like a Jeopardy! game show -- try and get the answer or next decision tree step before the contestants.
reply
hookin1
Good job. If you would have done a quick jumper repair, it looks like they would have eventually lost the left bank too. Always fix a bad ground. If you get a 2002 era Dakota's with a no bus on the odo. Check the ground next to the ecm. 9 wires soldered into one ground eye.
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Good job. If you would have done a quick jumper repair, it looks like they would have eventually lost the left bank too. Always fix a bad ground. If you get a 2002 era Dakota's with a no bus on the odo. Check the ground next to the ecm. 9 wires soldered into one ground eye.
reply
Rob
Love those boring electrical videos. Had my own 'bad ground' lately. Someone removed an A/M remote starter but forgot to hook up the ground he took off causing the push button start to set a code and trunk popper to not work. Easy fix after a quick look at a wiring diagram.
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Love those boring electrical videos. Had my own 'bad ground' lately. Someone removed an A/M remote starter but forgot to hook up the ground he took off causing the push button start to set a code and trunk popper to not work. Easy fix after a quick look at a wiring diagram.
reply
Rob
This was a great video, not a boring one. You demonstrated a common-sense approach to diagnosing the issue, and you were correct. What may have looked like a disaster (and possibly expensive) was anything but that. Thanks for the video Eric.
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This was a great video, not a boring one. You demonstrated a common-sense approach to diagnosing the issue, and you were correct. What may have looked like a disaster (and possibly expensive) was anything but that. Thanks for the video Eric.
reply
James
Absolutely love these videos. Too many technicians are more than happy to fire the parts cannon at problems with little to no success, all at the customer s expense. So great to see methodical diagnosis to these problems. Great work.
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Absolutely love these videos. Too many technicians are more than happy to fire the parts cannon at problems with little to no success, all at the customer s expense. So great to see methodical diagnosis to these problems. Great work.
reply
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