abs,stabilitrak light on

[Walkercraig01]

alright guys bare with me here. recently bought an 05 tahoe and the previous owner put 2k into the front end to fix it.. i have the reciepts.. however the abs stabilitrak and traction lights are all.. brakes are good.. fluid is good. this would be a speed sensor thing right? its not letting me cycle thru the info center it just shows these constantly but maybe thats a different issue. anyways glad to be back on the forum.

 

[Doubeleive]

alright guys bare with me here. recently bought an 05 tahoe and the previous owner put 2k into the front end to fix it.. i have the reciepts.. however the abs stabilitrak and traction lights are all.. brakes are good.. fluid is good. this would be a speed sensor thing right? its not letting me cycle thru the info center it just shows these constantly but maybe thats a different issue. anyways glad to be back on the forum.

if your lucky then it's just a abs sensor issue, you need a scanner that can read abs for beginners, preferably one that can read body codes as well though.
"front end" work is not elaborated, nor the mileage so, depending on that then it could need new hubs and not just a abs sensor.
you could simply look and make sure the abs sensors are plugged in, check all the fuses, that cost's nothing.....

 

[Joseph Garcia]

As @Doubeleive stated above, having a quality bi-directional scanner will help you pinpoint this issue (as well as most other issues) quite quickly. I had a similar issue about a year or so ago, and when I hooked up my bi-directional scanner and ran the diagnostics, the scanner pointed me to my left front wheel, where the abs/wheel speed sensor had failed. I replaced the sensor (fairly straightforward), and the code and dash light went away.

 

[TJ Baker]

If funds are tight you can read those codes (and others) for about $20 with an OBDII adapter and smartphone. Sure, more expensive scantools are handy but they are certainly not needed for reading codes.

 

[Joseph Garcia]

If funds are tight you can read those codes (and others) for about $20 with an OBDII adapter and smartphone. Sure, more expensive scantools are handy but they are certainly not needed for reading codes.

There are many internal codes that are not visible with a $20 scanner. Not saying that the speed sensor code cannot be read by a $20 sensor, but I want to make the point that many internal (or secondary codes) can only be read by a bi-directional scanner.

 

[Fless]

Gotta get the OBD codes; a misfire can cause these codes to set.

 

[TJ Baker]

There are many internal codes that are not visible with a $20 scanner. Not saying that the speed sensor code cannot be read by a $20 sensor, but I want to make the point that many internal (or secondary codes) can only be read by a bi-directional scanner.

Name few for me. I'd like to see an example.

 

[Joseph Garcia]

Name few for me. I'd like to see an example.

Let's start with this: Some GM trouble codes, particularly those related to non-emissions-related systems (like transmission, ABS, or body control modules), may not be readable by basic, generic OBD-II scanners. These scanners typically only access the standardized OBD-II codes related to the engine and emissions control systems. To access these more specific codes, a more advanced, manufacturer-specific scan tool is often required.

If not convinced, I'll do you one better. You can find your own examples with this document that identifies all of the different areas where a quality bi-directional scanner can read codes, monitor and record activities of components in real time, and perform diagnostic tests that quickly zero in on root cause of issues.

Match this up to your $20 code reader and see how they compare.

 

[Fless]

When using an inexpensive OBD dongle, it's important to find a phone or tablet app that will read, for example, the body codes. It would be helpful to identify specific dongles and how they match up with specific apps (and if Android or Apple) to read the non engine-specific codes. Some dongle manufacturers provide compatible apps, but some of the less expensive ones don't detail that kind of info.

 

[TJ Baker]

Let's start with this:

Well until I dig more into your reply (thanks for the reply btw) I'll just drop this short video here.

This is a 2005 Yukon, very similar to the OPs vehicle if memory serves. Yes, the video does not deal with codes. We will get to that later. But this will just show what a $14 adapter and some research can do.