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TCM Credits 4
No shortcuts
and driving style
Let's dial it back in
2014–2019 Silverado & Sierra Pre-Facelift — L83 / L86 / L8T
Tune Update (Retune) Magnuson TCM Credits 4R32 Motorsports Existing Customers Only Retune Service Built for vehicles already tuned by R32 Motorsports. Updated mods? New hardware? Let's dial it back in. Exclusive to Current R32 Tuned Vehicles After Purchase What To Do 01 Mod List Send your full, updated list of vehicle modifications. 02 Order Number Include your order number from this purchase for tracking. 03 Tune File Attach your current tune file so we know exactly where we're starting. Send