swathdiver
Full Access Member
No, I might have that backwards! Can't remember.
I've had one of those Mornsun power supplies in my Wishlist for years, they've doubled in price now to just over $30. Guess I ought to buy one just in case mine goes out.
What did you do to your NNBS GMT900 Tahoe/Yukon Today?
- Thread starter phattyford
- Start date
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
I've had one of those Mornsun power supplies in my Wishlist for years, they've doubled in price now to just over $30. Guess I ought to buy one just in case mine goes out.
it's a lot of work to replace that thing, more than I wanted to tackle
swathdiver
Full Access Member
I remember seeing a write up somewhere on how to do it once. I have the tools should it ever become necessary, just not sure if I still have the eyes for it!
more work than I want to do just for something I can plug into the wall instead, lol
swathdiver
Full Access Member
That's the one! I really appreciate that guy's videos.
Charlie207
Full Access Member
I'm trying to figure out why I have the ABS, TCS, BRAKE lights on my dash.
Both front wheel speed sensors are tight... I triple-checked harness connections this morning.
I want to see if the ABS controller is sensing the left & right sensors, but that particular function isn't working in the Tech2. This leads me to think there might be a grounding issue with the module. I'm trying to find a professional/official diagram and list of grounds that would affect the ABS module. The fuse is good. I pulled/swapped the 25A fuse with other good ones, and nothing happens.
When I get a multimeter in my hands I'll be able to test each wheel speed sensor for continuity, to rule that out.
Could another reason be a damaged wire or harness from the front diff actuator? (spitballing) I think the oil pan of the 6.0 banged that area when installing it.
I don't believe a sensor input missing is going to keep the tech 2 from accessing the abs module. that's either power, ground or can bus lines to it.
I feel like it should also had the ecm throwing a code that it has lost communication, but that might just be my system. since there's over 30 modules in mine, there's a request check engine light code they can send the ecm to turn on the dash light when something major happens to them. your abs sounds major.
I wouldn't be able to look up a trouble tree till Thursday, but without a code to start with. it's basically going to be checking for power at the module. shorts to power and ground type of thing.
This is exactly one of the reasons why I left that big fat cable connected to my Tech 2; I didn't feel like connecting/disconnecting it every time would be good for the connection. That and for convenience, having the cable ready to plug in to the truck.
The codes should give you a pretty good idea of what is wrong
Charlie207
Full Access Member
I want to ignore codes at this point, and focus on grounds. The ABS system is offline, and I need to ensure that it's working first.
Similar threads
