GMC has been revising their trim level names over the past several years. Sierra Pro has taken over the Work Truck/SL trim name; Elevation has replaced the SLE (and with the Premium upgrade, SLT) in the SUV lineup of late; AT4/AT4 Ultimate and Denali/Denali Ultimate have been the top of the line in off road luxury and on-road luxury respectively for the full-size pickups and SUVs.
SL, SLE, SLT nomenclatures are gone in the Sierra truck line. Mark my words.
GMC has been revising their trim level names over the past several years. Sierra Pro has taken over the Work Truck/SL trim name; Elevation has replaced the SLE (and with the Premium upgrade, SLT) in the SUV lineup of late; AT4/AT4 Ultimate and Denali/Denali Ultimate have been the top of the line in off road luxury and on-road luxury respectively for the full-size pickups and SUVs.
SL, SLE, SLT nomenclatures are gone in the Sierra truck line. Mark my words.
I'm having similar issues, though, mine is more like a 50% success rate. I've cleared cache, restarted both phone and infotainment system, and forgot and repaired phone. Mine does work with a cable, but frustratingly very hit or miss with Bluetooth. It's a 2025 and worked reliably until about six weeks ago. Suggestions greatly appreciated.
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