Dash warning lights issue

[OOCustoms]

Ok, so over the last couple of weeks 4 of my dash warning lights simultaneously have illuminated randomly, at first if I cycled the vehicle on/off they would disappear for a few key cycles, then reappear again. 2 days ago they came back on and stayed on. I disconnected the battery for an hour, reconnected, still on. My scanner says zero codes. No warning tone. Brakes feel fine, no leaks. Vehicle seems to function perfectly. Thoughts?

 

[TahoeZ]

Recent brake system work? How long does the brake master pump run before it shuts off? Accumulator holding pressure?

 

[Malleus]

Transfer case sensor(s). Possibly a sub harness failure between the engine harness connectors and the transmission/transfer.

The bottom row is a dead giveaway; your ECM thinks you're in LO range.

That's probably not the only problem, but that's where I'd start.

 

[NeedaLX]

I have the same 3 lights intermittently OP. Off and back on again for a while now. No other symptoms/codes

I have yet to officially diagnose but my search initially led me to the ABS VSC module:

Thread 'Fix for ABS, VSC TRAC, VSC OFF, & Brake lights remain on no CEL, or how to repair an ECU'

Feb 2, 2019

Hopefully this post saves you some money by showing you how to potentially repair your skid control ECU rather than replacing/buying a new/used one (skid control ECU part #89540-60160).
These instructions do require the ability to solder surface mount components and use either an oscilloscope and/or ohm meter. I recommend a hot air solder rework station like this one for $58. There are lower cost ones than this. Although I don't recommend it, if you can't get that, then make sure to use the smallest solder iron tips you have as to not apply too much heat. Too much heat will...

• FJRyder
• abs problems traction control vsc off
• Replies: 177
• Forum: 100-Series Cruisers

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[OOCustoms]

Transfer case sensor(s). Possibly a sub harness failure between the engine harness connectors and the transmission/transfer.

The bottom row is a dead giveaway; your ECM thinks you're in LO range.

That's probably not the only problem, but that's where I'd start.

Transfer case sensor(s). Possibly a sub harness failure between the engine harness connectors and the transmission/transfer.

The bottom row is a dead giveaway; your ECM thinks you're in LO range.

That's probably not the only problem, but that's where I'd start.

Interesting… up until about a month ago, the center diff lock dash lights never came on when locking the diff (confirmed it was engaged). We had a blizzard several weeks ago, while driving around with the diff locked the lights suddenly started flickering on when I’d make a turn or hit a bump. They worked intermittently for about a week, then quit again.