Chevy Silverado transmission replacement cost: when the fix is fluid

On October 26, 2026, Powertrain Products listed a remanufactured 6L80E six-speed for 2013–2014 GM full-size trucks, the Silverado 1500 among them, at $2,999, marked down from $3,449. The same seller listed a remanufactured 8L90E for 2020–2022 Silverado and Sierra 1500 trucks with the 5.3L and four-wheel drive at $4,199, marked down from $5,399. One wrinkle on the cheaper listing: its title says AWD/4WD while every fitment row beneath it reads RWD, so the seller’s VIN check matters more than the headline.

Those are parts prices. Labor, fluid, the transmission coolers the seller says must be replaced, a core charge if you keep your old unit, and programming all sit on top. For a sense of the whole bill, one 2017 owner’s complaint to NHTSA describes metal in the pan, a replaced transmission at 107,000 miles, and a cost of “almost $5700.” That is one owner’s account, not a benchmark. Kelley Blue Book’s Silverado repair pages read “No Pricing Data Available” when we opened them, and RepairPal refused our request, so neither is quoted here. We sell VIN checks, not repairs, and price none of this ourselves.

The price depends on which transmission the truck has, and the Silverado 1500 has carried several. The 2008–2013 trucks used a four-speed automatic behind the smaller engines and a six-speed behind the larger V8s, with the split moving from year to year. NHTSA’s 2014 cooler-line recall describes that year’s trucks as equipped with a “6-Speed Automatic Transmission (feature code MYC).”

The eight-speed arrived for 2015. GM’s shudder bulletin lists 2015–2018 Silverados with the 5.3L and 6.2L V8s (engine codes L83, L86 and L8B) and the 8L45 or 8L90, but plenty of trucks from those years kept a six-speed, and GM’s separate six-speed bulletin covers them. The 2019 redesign widened the menu again, with eight-, ten- and six-speed automatics depending on engine and trim, plus a 3.0L diesel whose transmission is the subject of recall 24V-797. A model year does not settle it; a transmission lookup by VIN does, before anyone prices a unit.

Our corpus of federal NHTSA complaints holds 12,743 reports against the 2008–2022 Silverado 1500. Power train is the most-reported category in 3 of its 15 model years, and in the years where it makes the top five it adds up to 1,892 reports. Before 2015, it barely shows: only 66 counted reports, and in 2008, 2009, 2011, 2012, 2014power train is not among the year’s five most-reported components at all. That means fewer than each year’s fifth-place count, not zero. For 2014 that ceiling is 210, so the true figure for that year is unknown but bounded.

Then the eight-speed years arrive. 2015–2018, the span GM’s shudder bulletin names, holds 796 reports, 42% of the counted total, peaking in 2017 at 235. The new-body trucks, 2019–2022, hold another 1,030, 54%. 2019 is the worst single year at 328, 28% of every complaint filed against it, and 2020 is the most transmission-heavy by share at 31%. Two caveats: complaints are unverified owner reports, not a failure rate, and NHTSA’s power-train bucket also takes driveshaft, axle and transfer-case reports. The 2019 and 2020 trucks share a driveshaft-weld recall, so not every one of those reports is the gearbox.

Reading the 2017 narratives gives the texture. The recurring words are torque converter, shudder, jerks and clunks, and a fair number end with a dealer finding metal in the transmission pan. That last detail is what separates a fluid job from a teardown, and GM’s bulletins draw the line in the same place.

GM bulletin 18-NA-355 describes the complaint in an owner’s terms: a shake or shudder under light throttle between 25 and 80 mph, “as if they are driving over rumble strips.” It names the cause as torque converter clutch shudder. The Sixth Circuit’s 2025 opinion, summarizing the court record, traces it to the original fluid absorbing moisture, and says GM developed a moisture-resistant fluid in December 2018 and told dealers to resolve shudder complaints by flushing transmissions with it.

The bulletin’s correction is that fluid exchange, using Mobil 1 Synthetic LV ATF HP. For Silverados, the procedure loads 20 quarts into a flush machine and exchanges about 16 through the cooler lines with the engine running. GM’s warranty table allots 1.1 hours to it, and says the shudder should improve right away, with the full effect taking up to 200 miles and at least two cold-to-hot drive cycles. The bulletin is strict on one point: intermixing other fluids or additive packages leaves too little of the new fluid in the unit “and will not provide satisfactory results.” A quick-lube drain and fill is not this repair.

GM files the labor under powertrain coverage, so a truck still inside GM’s powertrain warranty should not pay for it at the dealer. A Chevrolet warranty check by VIN tells you whether that applies before you pay a shop for the same procedure.

That table is the heart of this page. A shudder that feels like rumble strips on a clean-pan truck is the case GM wrote a fluid procedure for. Metal in the pan moves the job to a torque converter, which means pulling the transmission but not necessarily replacing it. A full replacement belongs to a transmission that has failed internally: no engagement, slipping under load, or damage a teardown confirms.

Harsh shifting is a different story, and a less hopeful one. The Sixth Circuit opinion says GM sent dealers 60 technical service bulletins for eight-speed shift quality and quotes an internal GM note that “[r]eplacing transmission components or complete assemblies w[ould] not improve” harsh-shift conditions. If a shop proposes a new eight-speed purely because the truck clunks into gear, ask what it expects the new one to do differently. Our guide to TSBs versus recalls explains why these fixes reached owners as bulletins rather than recall letters.

Owners of six-speed trucks are not exempt. GM bulletin 20-NA-142, in its August 2023 revision, covers a surging or shudder complaint on trucks with GM’s six-speed automatics (option codes MYC and MYD), including earlier Silverados, the 2019 Silverado LD, the new-model 1500 from 2019 to 2021, and the 2022 1500 Limited. GM blames transmission fluid additives that “may have been depleted during vehicle operation,” some of which helped regulate clutch slip.

The bulletin sets a mileage line. At 30,000 miles or less, the technician drops the pan, checks for metal, replaces the filter and exchanges the fluid with DEXRON VI; GM allots 1.2 hours plus 1.5 more for the pan and filter on 2019–2022 new-body trucks. Above 30,000 miles, “the torque converter and transmission oil filter should be replaced.” Most used trucks for sale are past that line, which is why the realistic middle-ground quote on a shuddering six-speed is a converter, not a transmission. It is also why the fluid spec for the exact truck matters: the eight-speed fix calls for one fluid, the six-speed fix for another.

Owners took the eight-speed to federal court in Michigan in 2019. In Speerly v. General Motors, Judge David Lawson of the Eastern District of Michigan certified 26 statewide subclasses of buyers of 2015–2019 vehicles with the 8L45 or 8L90, roughly 800,000 people by the appeals court’s count, over two alleged defects: shudder and harsh shifting. GM appealed, and the full Sixth Circuit reheard the case.

On June 27, 2025, the full Sixth Circuit, sitting en banc, vacated the certification order, holding that the subclasses did not meet the requirements for handling all of those claims in one court, and sent the case back to Judge Lawson. The opinion also notes that GM repaired the shudder in 252,059 eight-speed transmissions, “most of which GM presumably covered with its free warranties.” The district docket was still open when we checked, and we found no settlement or claims process. Do not plan a repair around one.

No recall covers eight-speed shudder or shift quality. The campaigns that do involve a Silverado 1500’s transmission or driveline are narrower:

The diesel campaign matters most for cost. GM’s owner letter says the new software detects valve wear “approximately 10,000 miles before a wheel lock up condition could occur,” then limits the truck to fifth gear. If that happens within 15 years or 150,000 miles of the in-service date, GM repairs the condition at no charge, at a GM dealer, and offers reimbursement to owners who already paid. For a 2020–2022 diesel 1500, a transmission quote that skips this program is the wrong quote. A Chevrolet recall check shows whether 24V-797 or 26V-083 is still open on a given VIN.

A replacement Silverado transmission is not plug-and-play. Both Powertrain Products listings above say the unit “MUST be reflashed before it is put into service and all transmission oil coolers must be replaced,” and the 6L80E listing adds a thermostatic bypass it says “typically is what caused the initial transmission to fail.” Whether or not you accept that diagnosis, it tells you what a complete quote contains: the unit, new coolers, the bypass where fitted, fluid, labor, programming and a relearn drive.

Read the warranty line closely. The 8L90E page promises a “7 Year, Million Mile Warranty” in its description and “up to 7 years and 100k miles” in its FAQ. Ask the seller which one applies, in writing, and whether commercial use or towing changes it.

• Confirm the exact transmission by VIN: four-, six-, eight- or ten-speed. Model year alone does not settle it
• Ask whether the pan was dropped and whether metal was found. No metal plus shudder points at fluid first
• On a 2015–2018 eight-speed, ask if bulletin 18-NA-355 was done, with Mobil 1 LV ATF HP, and give it 200 miles
• On a six-speed over 30,000 miles, ask for a torque converter and filter price next to the replacement price
• On a 2020–2022 diesel, check recall 24V-797 and its 15-year/150,000-mile coverage before paying anyone
• Get the unit, labor, fluid, coolers, core charge and programming as separate lines

On a 2015–2018 eight-speed truck, ask for service records showing the shudder fluid exchange. A truck that had it and drives smoothly at 40 mph under light throttle is in a better place than one that never did. On a six-speed, the same light-throttle test looks for surge. A Chevy truck VIN decode confirms the engine and drivetrain, and the Silverado’s full complaint record by year shows that 2019 and later trucks draw heavy engine complaints too, which is a separate budget question.

If you are cross-shopping, the F-150’s story is different in kind: its transmission cost turns on three downshift recalls rather than a fluid bulletin. And if a GM crossover is also on the list, the same GM habit of fixing by bulletin shows up in the Traverse’s timing-chain record.