Onstar module location?

2025 GMC SIERRA HYBRID
8,000 MILES • 4WD
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COOKEE
  • MEMBER
  • 20 POSTS
I didn't see the right selected vehicles was looking for. Im ask for I'm GMC Denali Sierra EV. Look for location of OnStar module
Mar 31, 2026 at 1:37 AM
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STRAILER
  • ✓Experienced Mechanic
  • 55,710 POSTS
I had the site updated for that make and model for future questions. OnStar-telematics control module appears to be under rear seat. Can I ask the problem you are having? Check out the images (below). Please let us know what happens.
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Apr 1, 2026 at 2:30 AM
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