The 4L80E lives in heavy-duty trucks, vans, and motor homes — vehicles that ACTUALLY use their transmission. So when the converter goes, the replacement decision is rarely "cheap reman" — most 4L80E applications need HD billet.
TCC shudder under tow load, no lockup at highway speed, P0742, premature transmission heat, slipping that gets worse as fluid heats up, metal/aluminum in pan, audible whirring at idle.
These are tow vehicles. Higher line pressure, higher converter stall load, more heat cycles. The OE converter is rated for the truck rolling off the dealer lot — not 200,000 miles of farm equipment haul. Once the stator bearings wear, the lockup clutch follows within 10-15k miles.
OEM reman: $220-320. HD billet (PI, BD, Sun, Yank): $480-750. Labor R&R 6-8 hours at shop rate = $540-1,200. Total: $760 to $1,950.
OEM reman: daily driver, no tow, stock vehicle. Suburban with a family in it. Half-ton chassis on a motor home that does not tow.
HD billet: ANY truck or motor home that tows. Full-size dually. Plow truck. Lifted off-road build. Anything with a Banks or PPE tune.
Front pump bushing should be replaced when you replace the converter. The 4L80E input shaft splines can also wear — inspect before installing new converter. If splines look worn, replace input shaft now or you will be tearing it back down in 30k miles.
Direct-from-the-pro pricing. Free shipping over $75. Same-day handling Monday-Friday. 30-day returns.
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