I have a 04 yukon 5.3l. I started getting a stability disable warning after driving a bit(once the drive train gets wam). I thought it's the tc fluid and it was the easiest and cheapest fix. The shop I took it to drained 1.5 qt and added 1.5 qt. On the drive home the 4wd service warning came on. Didn't drive it for over a week after and checked for codes, there were none. Not sure if this is important but my yukon have a 4lo, stability on, stability off selector and nothing else. I'm thinking it might no have enough tc fluid. Also the shop I took it to added auto trak II but not sure what was taken out.
04 Yukon/4wd warning lights but no codes
- Thread starter brutmax
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thanks
Specifically what did you use to check for codes?
What "Nxx" RPO codes are in your glovebox lid? Maybe post a pic of your 4wd switch.
You need a better scanner that will see the 4wd codes. Once you get the code that's triggering the DIC message, post it here.
In the meantime crawl under it and make sure the transfer case harness is connected properly, as well as not hanging down near the driveshaft.
In the meantime crawl under it and make sure the transfer case harness is connected properly, as well as not hanging down near the driveshaft.
It's best to get a OBD scan tool that supports manufacturer, or enhanced, codes (DTCs). Obviously, in your case, GM enhanced codes.
I always recommend something from Innova or TopDon. Which level model depends on your budget. Both brands have nice basic DIYer options for $100 or less. Just make sure they support OEM specific enhanced DTCs. Both brands also have great "prosumer" level scan tools that are bi-directional with a good amount of maintenance, reset, live data, etc., functionality. And if you want to step it up, TopDon's Phoenix line is awesome. Don't get me wrong, there are other brands that offer good tools. But these two are my go to brands as a DIYer, custom builder, enthusiast, hobbyist since the mid 1970's, working on and building everything from 60's muscle cars to the latest off the line this year. I've been using Innova's tools since they created one in 2001. Been using TopDon since they started business in 2017. Both brands have live U.S. based phone support. In addition, Innova is a U.S. based company. All of Innova's scan tools have no ongoing subscription or maintenance fees (a big plus for more casual DIYers). While TopDon has a handful of no fee tools, most models do. But they are more advanced tools, and any brand at this level has subscription costs.
What's your budget?
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