Unknown or other
GMC technical service bulletin PIC6638 for 2026 GMC Acadia, 2026 Chevrolet Traverse and 2026 GMC Yukon and others.
- Bulletin number
- PIC6638
- Component
- Unknown or other
- Summary
- This Preliminary information communicates to the technician the repair direction needed to address an inaccurate speed limit sign displayed on instrument cluster.
Vehicles covered
- GMC Acadia 2026 2026
- Chevrolet Traverse 2026 2026
- GMC Yukon 2026 2026
- Cadillac Escalade 2026 2026
- Cadillac Escalade ESV 2026 2026
- Chevrolet Equinox EV 2026 2026
- Cadillac Lyriq 2026 2026
- Chevrolet Silverado EV 2026 2026
- Cadillac Vistiq 2026 2026
- Cadillac Optiq 2026 2026
- GMC Hummer EV SUV 2026 2026
- GMC Sierra EV 2026 2026
- GMC Hummer EV Pickup 2026 2026
- Cadillac Escalade Iq 2026 2026
- Cadillac Celestiq 2026 2026
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