'03 Tahoe Ground locations?

Hello,

Recently purchased a 2003 Tahoe with 134K on it and it has some electrical issues. For one, the cluster goes in out like they all do so I had it rebuilt. If I hit a bump in the road hard enough, all the indicators show zero, ABS light turns on, service 4WD light turns on, unknown driver light, etc all come on. If I hit the dash on the right side, all the gauges start working again minus the coolant temp gauge (I think is off) and sometimes the ABS light will still stay on. The company that rebuilt my cluster has agreed to swap it with another one to see if that fixes it since the one currently in it is a reman.

Additionally, when I hit a hard bump, the radio will play a buzzing noise that goes up with the RPM's. It does have an aftermarket deck in it which was there when I bought it. This has lead me to believe I have a bad body ground or the like somewhere. I thought I read somewhere there are some grounds on the frame underneath the drivers side frame somewhere? Has anyone had these symptoms before and found a fix?

the cluster's themselves are known to be a issue with loose solder inside I would go ahead and exchange it, radio could be picking up feedback from the cluster (maybe), your main grounds are in the engine compartment

Welcome and good luck getting this fixed.

So the cluster really started acting up the last week so I swapped it. So far so good but the RPM needle keeps dipping to zero and then coming back to life if I tape on it. There are some strange wires running behind it which I suspect might be part of the issue.

Anyone still know where the grounds are? I would like to check and clean them and the airbag light is on if that helps any.

One ground is on the drivers head facing the windshield.
Two grounds on the driver side block one behind the motor mount and one in front of the mount.
One ground on the passenger side block by the starter.
One ground on the front frame rail where the bumper hooks up. Driver side just in front of the radiator

There maybe more but those are the ones I know of, good luck

I have an intermittent buzz (sounds like from right rear speaker) in my '03s stock radio that can be corrected by hitting the center console area with the palm of my hand. What is located there that may be causing this?

stickM said:

I have an intermittent buzz (sounds like from right rear speaker) in my '03s stock radio that can be corrected by hitting the center console area with the palm of my hand. What is located there that may be causing this?

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Your amp and /or sub may be under there.

So I had the cluster swapped yet again with a well known good cluster and same issue. I was talking to the mechanic that recently worked on it and he suggested removing it again and checking the pins in the plug to see if they are loose. I now know it is not the cluster itself but another issue. Does any of this sound like a possible BCM issue? As stated, with this new cluster, I can tap on the top of it and it comes back to life which leads me to believe it is something near there. There is also some strange wires behind it which I don't know where they go.

SouthPawCO said:

So I had the cluster swapped yet again with a well known good cluster and same issue. I was talking to the mechanic that recently worked on it and he suggested removing it again and checking the pins in the plug to see if they are loose. I now know it is not the cluster itself but another issue. Does any of this sound like a possible BCM issue? As stated, with this new cluster, I can tap on the top of it and it comes back to life which leads me to believe it is something near there. There is also some strange wires behind it which I don't know where they go.

Click to expand...

pictures of these wires? are they tapped into the cluster harness?

I will snap someone when I get it pulled later this week. If I remember right, they appear to be running behind the deck for the stereo all the way to kick panel on the driver side.