This is how I would approach it. A heavy duty relay rated for high continuous amperage, with a dash switch for the control circuit. Shades of the old Ford starter solenoids/relays, but more capacity. "Smart" relays and battery isolators are available but I think that complicates what should be...
From another thread:
https://www.tahoeyukonforum.com/threads/am-i-missing-something.157758/post-2032860
And the max tire pressure on the tire sidewall is the highest pressure that is safe for the sidewall. That pressure may also be needed to maintain the tire's weight rating.
It would be worth checking the starter to verify that the drive gear is retracting all the way. Also a loose or cracked flex plate is not out of the realm of possibilities.
The link below is the diagnostic path for C0035, which can trigger ABS/TCS/VSES codes. Verify your vehicle and if I selected the wrong one, navigate to the appropriate page for it...
Right, I mis-typed that, my bad. But 250 mA is not an insignificant draw -- how is that "within spec" when the vehicle is (or should be) asleep?
Probably not an issue, but every fusebox drawing I've looked at shows the inside fuse #22 to be for the DIC. I'm not saying that "INFO" is wrong but...
Are you saying that the 1.8v drop on the INFO fuse isn't always there? I think I misunderstood from your initial post.
If it IS always there when the vehicle is asleep, that's enough draw to affect a battery. Maybe not overnight but within a day or two of sitting. I'd probably...
Voltage isn't current; that there is voltage drop indicates that there is current flowing in that circuit. But the voltage drop needs to be converted to current, so use the linked chart for the fuse type and size on that circuit and calculate the estimated current draw. We haven't been told the...
Confirm for us that the mV reading was across the fuse test points.
Depending on fuse size, has that reading been converted to A (or mA) using the appropriate Power Probe Fuse Voltage Drop chart? (Estimated draw varies by fuse size and amp rating.)
https://powerprobe.com/en/resources/
It would be very helpful to put a good bidirectional scanner on it and read all the codes, then post them here. All we can do is guess about what's causing the issue.
For example, some engine misfires can cause other codes to set.
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