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Chevrolet / GMC · Silverado 1500, Silverado 2500, Sierra 1500 +5 · 2007–2013
80k–220k mi (peaks ~140k)
$3,400–$6,400
Population range — not a quote for your car.
Transmission & drivetrain
Automatics, dual-clutches, transfer cases, differentials. The most expensive single component on most cars when it goes — and the easiest one to mis-quote.
Major patterns are wallet events — repairs in the four-figure range that re-shape the math on a quote or a purchase decision.
Most affected vehicles hit this failure inside the window below. Plan for it.
Vehicles outside this population may exhibit the same symptoms for unrelated reasons. The engine resolves down to your specific VIN before applying this pattern to a Verdict.
The window above is where most documented failures cluster. Vehicles past the tail aren’t immune — but they’ve statistically aged out of the high-density band.
A symptom matching this list isn’t a diagnosis — it’s a flag. The Verdict engine cross-checks symptoms against your VIN’s recall history and the failure window to weigh the probability.
If any of these have been performed on the affected vehicle, the engine reduces the failure-mode deduction accordingly. Documentation matters — “the previous owner said” isn’t the same as a receipt.
Documented external trans-cooler bypass + transmission flush + new fluid
root cause fix
$3,400–$6,400
This is the documented dollar range we see across affected vehicles. Quotes outside this band — high or low — get flagged in a Verdict.
Base deduction−8 on the 0–100 scale.
Past-window credit45% credit back if the vehicle has aged past the window without symptoms.
The encyclopedia tells you what’s documented across the population. The Verdict tells you what it means for your specific year, mileage, and recall status.