Replaced battery no power to my dashboard?

2015 CHEVROLET SUBURBAN
143,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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RJOHNSON82
  • MEMBER
  • 1 POST
After replacing my battery, I have no power to my dashboard or the push button start, all worked before I replaced the battery. Checked the terminals, fuses, relays, everything checks out.
Nov 29, 2025 at 3:21 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 54,178 POSTS
Okay I think I know what is wrong, (90% of cases): The Small Positive Jump-Start Terminal Wire Not Connected

Next to the main battery cable on the positive post, there is a smaller wire that feeds:

1. BCM (Body Control Module)
2. Ignition Power Mode Master
3. Dash cluster
4. Push button start
5. Interior electronics
6. The underhood fuse block feed

If this small lead is not bolted down, the truck is completely dead except for a few low-power modules. This wire often slips behind the battery, gets forgotten, or doesn’t seat properly when the battery is slid in. Please let me know what yo find.
Dec 1, 2025 at 10:08 AM
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