Oh, it's a wonderful day for a chevrolet, hey there viewers and welcome back to the self made auto channel sitting inside the 2007 chevrolet. It's a suburban uh, it's a half tonner. I believe it's the big five three. We got her running through a code scan now.

The guy dropped it off and told me uh, or at least what mrs zoe wrote down, that it has a entire bank misfire. Now i did start the vehicle up and just pull it from the parking spot around here, uh in front of the bay, and indeed it does run poorly engine light - was flashing. Uh smelt very rich, very gassy, so i just shut it off and figure. Well, we better scan it and see if we can collect some data.

You know before we do any kind of uh investigating and see if his problem is an entire bank of cylinders down lots of codes. There anyways, let's see what we have: engine misfire ignition coil control, ignition, coil control, ignition coil control, one three: five and seven, your classic chevrolet 521 and then fuel system lean. So that's fantastic folks um! This should be pretty cut and dry. So, let's think about this.

For a minute, so we have random cylinder misfire, which we know. Let me start it up, so you can hear it. I don't know if you'll be able to tell or not, but you know i don't want to let it run too much here. That's a lot of that's a lot of raw gas um, but when we look at this ignition coils one three, five and seven, so this is the entire driver side of the engine, the control circuit, um.

The only thing that these all have in common are um powers and grounds, so let's go see what we're missing and see if a little mouse got under there or something like that. Maybe it's a blown fuse from a shorter coil who knows take the lid off of here. So this is the side that we're going to be looking at. We don't want to fiddle.

We don't want to fiddle too much here, we're just going to kind of visual inspection, so one one three, five, seven down the driver's side on your chevrolet um, it doesn't look like anybody has been meddling and things they all not be meddling in, but they uh. I see this lock is out, so somebody perhaps was on the right path, so i'm assuming on these connectors. I think this connector feeds all the coils and they should have a common power in the ground and then control wire. So what we'll need to do? I guess we can just unplug this little fella.

We got a pink and black right there, that's a pretty common general motors power ground. So before we even get out a diagram, let me go grab a little test light. We'll turn the key on see. If we have power ground here and then we'll take it from there, i very well could be wrong on the colors, but i think i'm thinking, let's see okay, so it doesn't light up the test light.

Let's just see, let's leave it in the one we think is power, touch it on the ground. Oh look at that. Ah come on come on baby, so there there we have. We have power on the pink, i'm certain this black one is supposed to be a ground.

I could be fun, though i say i'm certain, then i'm sitting here doubting myself. So i tell you what, before we uh back probe that let's um get on the world wide web here and look it up to be certain ignition coils, okay, so one one three: five: seven: okay: g102! Oh you, son of a booski uh protoman, is not very uh friendly with the touchscreen, so uh one three five, seven, that's these coils over. Here we were cracked, the pink is the common. The power low reference is the brown, but the ground is the black lower left front of engine.

Didn't we do the jail, isn't that the one down by the power steering pump? I thought we did a video on this folks, i'm pretty sure. Let me grab a light before we get real far, i'm going to take it's going to back probe right into that round. I'm gon na hook a jumper wire on it. There then we're just gon na ground.

It we're gon na make sure everything everybody over here is happy. I'm just gon na hook it right on this ground strap i'm gon na fire. This pig up see if she runs out all eight now remove this butter baby and then, when we remove the ground. Well, if i can get to it, i'm not happy now, so that's it! That's pretty easy show's over um.

Where did my needle go? I lost my needle man, so i suppose at this point folks, you got a couple options. Uh a option. A we can we'll go, find the ground. This g g, whiz, g102 lower left front of engine, we'll go find it.

It's probably crappy right at the eyelet. You know just based on experience. Uh or b. You could just tap into the ground wire and you know run yourself a new one.

That's up to you. Chances are there's other stuff on g102 that potentially could be suffering from lack of ground. Well, uh. I think it's way down here.

That's that there is a ground wire way down yonder. Here, i'm going to verify that's g102, we'll undo it we'll have a little look at it and see if we can't get this fella going again. I got him weasel out of there folks. So as soon as i touched, let me get this here, the two smaller ones: they they fell right out now the eyelet they were all into.

You know an eyelet this one here i had to wiggle a little bit because we're going to repair all of them. So there's three wires: total there uh they're, just gon na get new eyelets and then probably because they're, a son of a mother to get to down there they're uh. We see it see that gray tab there hold that wiring harness on. They go right behind that.

So we can either put them back there or we can just do your classic gmg 102 relocation kit, they call it uh. We just run the eyelet. You know up here and bolt. It just needs to be bolted to the engine block so either way you fix that it's fixed and it's as simple as that folks now that g102 is the same ground for the left side and the right side.

So, however, there's two separate wires, so it is plausible, like in this situation that just one of them can lose connection where the other bank runs or if you lose them. Both you lose spark on all eight cylinders. Uh, the big clue would be. You know you got injector pulse and, of course, you're gon na have a whole bunch of codes.

So uh, you know: what's the common link between them, all you know powers grounds uh. You know what is it there? It's unlikely that all four control wires went bad at the same time, so uh, that's that i'm gon na fix those wires get put back together. Sorry for the boring video, but you see it, how i see it and i want to see you down in that comment - sections the concerns. The comments find us on the institute in the facebook and just my reviewers.

I can do it, you can do it thanks for watching.