Help - 2004 Tahoe ABS, Brake Light, Traction Control, Stabilitrak

[rkeil1]

I am new to the forum - Want to start by introducing the vehicle - 2004 Chevy Tahoe 179,000 miles no modifications.

The brake light and ABS light have always been on since I owned it (Bought it at 163,00). The wife is going to take the tahoe because it has been such a great vehicle and I'm going to continue to drive the Duramax. She wants the brakes fixed. I already did SS lines new pads and rotors. She wants the full paddle back (air pocket in abs) and the abs fixed. i sent out the abs module to get resoldered as everyone says to do. I reinstalled the module and still have both ABS and brake lights on the dash. The parking brake cable is broken so I don't know if this will do it. However, I did look around at fuses to see if anything was blown. All fuses checked out. There is a brake fuse on the interior fuse panel. By the diagram on the interior fuse panel and looking at my fuses there it seemed like this brake fuse was empty. i installed a 10amp fuse as it calls for and turned the key. The vehicle made some sounds and now the stabilitrak service message pops up along with the traction control light. i scanned the truck and got P1689 and P0856. Since my ownership, the cruise control has never worked.

I am beginning to get stumped with this one. The abs module should be fine since it is resoldered and re-installed. My questions are as follows:
1. Can a broken parking brake cable cause this?
2. Did i screw up by installing a fuse in this location? (I have since removed the fuse. ABS, brake, stabilitrak, traction control light still on).
3. What is step one? I'm very mechanically inclined but I am starting to lose my mind with this.

Attached is a picture of the fuse i was questioning.

Any help is appreciated

 

[Fless]

That fuse is for the ABS system:

 

[rkeil1]

That fuse is for the ABS system:

View attachment 411431

Ok that makes more sense. I know there is also an Abs fuse in the fuse box under the hood. The location I circled can you agree that is the location you have circled as well? The only confusion I have is the 10amp below the relays is that the pdm fuse. My panel shows that location being a Pam fuse. But the location of what I thought was the brake/abs fuse is empty as shown in my picture in the original post.

 

[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

You are already receiving sage advice from the knowledgeable folks on this Forum.

 

[Fless]

The location I circled can you agree that is the location you have circled as well?

Yes, same fuse. Since it's missing in yours that will be one reason for the code to set. If you reinstall it and still have the code, then there is something else wrong with the ABS system.

I know there is also an Abs fuse in the fuse box under the hood.

Yes, the ABS fuse in the underhood fusebox is a Jcase fuse, which is physically larger than the minifuses.

 

[rkeil1]

Yes, same fuse. Since it's missing in yours that will be one reason for the code to set. If you reinstall it and still have the code, then there is something else wrong with the ABS system.




Yes, the ABS fuse in the underhood fusebox is a Jcase fuse, which is physically larger than the minifuses.

The location never had a fuse in it. All this time I have been driving around with just the Abs light and brake light on. When I put that fuse in some weird relay clicking happened so I took it out. Now I have service stabilitrak and traction control. Should I re install the fuse?

 

[Doubeleive]

put the fuse back and then you need to do a little more troubleshooting.
you could have more than 1 thing going on.
it's possible the re-solder of the abs module didn't take but that will require some testing
you could have hub/abs sensor issue's also, entirely possibly at 179k
you need a scanner that can read ABS and hopefully show real time data.

 

[rkeil1]

put the fuse back and then you need to do a little more troubleshooting.
you could have more than 1 thing going on.
it's possible the re-solder of the abs module didn't take but that will require some testing
you could have hub/abs sensor issue's also, entirely possibly at 179k
you need a scanner that can read ABS and hopefully show real time data.

So I scanned for codes with the fuse installed in that location. Got a whole bunch of stuff going on. One was the front left wheel sensor. Replaced that and still have abs light, brake light, tc light, service stability, service brake. And the codes I have are as follows:
P1689 - delivered torque circuit fault
P0856 - traction control torque request circuit
C0550 - ecu malfunction
C0110 - pump motor circuit malfunction
C0131 - abs/tcs system pressure circuit malfunction

Left front wheel sensors went away with new sensor installed.

Trucks battery has now died from me messing around with it so much. I pulled it out and it’s on the charger. I also cleaned the grounds by the drivers side front cab mount. No change.

 

[Tonyrodz]

My abs light is on also. It's because I changed the hub and used aftermarket, Moog I think--but used the oem sensor trying to troubleshoot another issue. Seems the aftermarket hubs like to only use their sensors, not the oem sensors. Is that what you also did?

 

[Doubeleive]

So I scanned for codes with the fuse installed in that location. Got a whole bunch of stuff going on. One was the front left wheel sensor. Replaced that and still have abs light, brake light, tc light, service stability, service brake. And the codes I have are as follows:
P1689 - delivered torque circuit fault
P0856 - traction control torque request circuit
C0550 - ecu malfunction
C0110 - pump motor circuit malfunction
C0131 - abs/tcs system pressure circuit malfunction

Left front wheel sensors went away with new sensor installed.

Trucks battery has now died from me messing around with it so much. I pulled it out and it’s on the charger. I also cleaned the grounds by the drivers side front cab mount. No change.

You may want to pull the ecu harness's off and take a look to see if there is any corrosion or signs of water intrusion, those are pretty random codes which may be wiring related, check all visible wiring harness and connections, feel the bottoms of the wires to see if one has rubbed on something and broke a wire anywhere. chewed wires from rodents, etc.

 

[rkeil1]

You may want to pull the ecu harness's off and take a look to see if there is any corrosion or signs of water intrusion, those are pretty random codes which may be wiring related, check all visible wiring harness and connections, feel the bottoms of the wires to see if one has rubbed on something and broke a wire anywhere. chewed wires from rodents, etc.

I’ll check the harness. Before I reinstalled the fuse from the above posts I only ever had an abs light and brake light.

The wife wants all the lights off and inspection (nj) so this is why I got to this point. I drove the Tahoe for a year with no issues while having the brake light and Abs light on. Include multiple 5+ hr trips towing my 21ft bass boat. Now I’m opening a can of worms to get the lights off for her.

 

[Tonyrodz]

I’ll check the harness. Before I reinstalled the fuse from the above posts I only ever had an abs light and brake light.

The wife wants all the lights off and inspection (nj) so this is why I got to this point. I drove the Tahoe for a year with no issues while having the brake light and Abs light on. Include multiple 5+ hr trips towing my 21ft bass boat. Now I’m opening a can of worms to get the lights off for her.

Guaranteed it's something stupid. Just gotta find it tho. Both my lights are on too.

 

[rkeil1]

Why does the EBCM on my truck have way more valves and only one large plug? Every replacement ebcm I find only has a couple valves and has 3 electrical connectors?

 

[project_x]

Have you checked the ground for the abs module (and other things)? On the frame, driver's side, even with the front of the door.. it gets corroded....

 

[rkeil1]

Have you checked the ground for the abs module (and other things)? On the frame, driver's side, even with the front of the door.. it gets corroded....

Cleaned those and check with multimeter. Both are good.

 

[Doubeleive]

unless you are having a brake issue i.e. 1 wheel locking up or something to that effect then the abs module is all you need to replace.

from the codes you reported I would lean towards the problem being electrical. Could it be the abs module causing it:? I have never heard of one doing anything more than throwing brake/abs codes but I suppose it is possible..

 

[Fomoodie]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

You are already receiving sage advice from the knowledgeable folks on this Forum.

 

[Fomoodie]

The location never had a fuse in it. All this time I have been driving around with just the Abs light and brake light on. When I put that fuse in some weird relay clicking happened so I took it out. Now I have service stabilitrak and traction control. Should I re install the fuse?

The fuse was probably removed because the ABS Unit was acting up. Since you had it repaired put the fuse back and all should be good..

 

[rkeil1]

The fuse was probably removed because the ABS Unit was acting up. Since you had it repaired put the fuse back and all should be good..

I have replaced the fuse, reinstalled the ebcm, cleaned and reset the ecu. Dismantled and cleaned the entire fuse box. Cleaned and prepped every ground and still all all the light and messages. I’m now learning that the abs module I have is discontinued. My rig is awd, with active brake control, and traction control. It essentially has every option and that module is no longer sold. Called gm they gave me a new part number that I get some hits on but from very no name websites.
Below is a picture of my unit. The new part number gm gave me based upon my vin is 19368154

 

[RET423]

The ABS & Stabilitrac both use the wheel speed sensors in order to function, since you have a code for wheel speed sensor you should start with that; sometimes an error in the ABS will also trigger the brake light.