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NHTSA campaign 21V906000 · manufacturer recall 21KWG and 21PBM

2019–2022 Kenworth and Peterbilt: electrical system recall

Unintended vehicle movement can increase the risk of a crash or injury.

minor 908 vehicles affected 56% reported repaired

What was reported

Source: manufacturer filing, 49 CFR Part 573
Problem PACCAR Incorporated (PACCAR) is recalling certain 2019-2022 Kenworth T880, W990, Peterbilt 567, 579, 389, and 2022 Peterbilt 536, 537 wrecker and auto hauler vehicles. The work brake (winch brake) may unintentionally disengage the service brakes during winching operations, causing the vehicle to roll. Risk Unintended vehicle movement can increase the risk of a crash or injury. Fix Dealers will update the vehicle software, free of charge. Owner notification letters were mailed on January 3, 2022. Owners may contact PACCAR customer service at 1-425-828-5888 (Kenworth); or 1-940-591-4220 (Peterbilt). PACCAR's numbers for this recall are 21KWG and 21PBM.

Reported to NHTSA Nov 19, 2021 by PACCAR Incorporated, owners notified Jan 3, 2022.

Which vehicles are covered

Source: NHTSA campaign 21V906000
Model yearOn WhichTrim
2019 Kenworth T880
2020 Kenworth T880
2021 Kenworth T880
2022 Kenworth T880
2019 Kenworth W990
2020 Kenworth W990
2021 Kenworth W990
2022 Kenworth W990
2019 Peterbilt 389
2020 Peterbilt 389
2021 Peterbilt 389
2022 Peterbilt 389
2022 Peterbilt 536
2022 Peterbilt 537
2019 Peterbilt 567
2020 Peterbilt 567
2021 Peterbilt 567
2022 Peterbilt 567
2019 Peterbilt 579
2020 Peterbilt 579
2021 Peterbilt 579
2022 Peterbilt 579

None of the vehicles this campaign names has a page on WhichTrim: the catalogue covers the cars, trucks and SUVs the EPA certifies from 2016 on, and these vehicles fall outside it — older model years, or motorhomes, trailers, buses, motorcycles and chassis cabs the EPA does not rate. The campaign record above is complete as filed, and whether one specific vehicle is included is settled by its VIN. Other campaigns on vehicles without a page here →

How much of it has been fixed

Source: manufacturer quarterly report, 49 CFR 573.7
Reported repaired 56%

of the campaign

The final figure: the six quarters of reporting that 49 cfr 573.7 requires have closed.

This is the manufacturer's own cumulative count of vehicles it has inspected and repaired, divided by the vehicles the campaign covers. It files that count with NHTSA every quarter for six consecutive quarters, starting from the quarter in which owners were told a remedy was ready, and then the obligation ends — so a figure on an older campaign is where the count stopped, not where it stands today.

It rarely reaches 100%, and not because the work was not done. The same report asks manufacturers to count vehicles they could not reach at all — exported, stolen, scrapped, or simply never located — and those stay in the denominator. A low number means a lot of these vehicles are still out there unrepaired; it does not tell you which ones.

The federal paperwork

Source: nhtsa.gov

Filed documents

Check one specific vehicle

A recall applies to a build range, so year, make and model cannot settle it. NHTSA checks a VIN against the manufacturer's own list and tells you whether the repair is still outstanding on that vehicle.

NHTSA VIN recall lookup →

Campaign 21V906000 · the manufacturer calls it 21KWG and 21PBM

Own one, or run a fleet? Recall Watch checks each VIN against every new NHTSA campaign and emails you when one lands, this one's expansions included. Or take a free one-line alert by model year.

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Common questions

Source: NHTSA, 49 CFR Part 573

Is 21KWG and 21PBM the same recall as 21V906000?

Yes. 21KWG and 21PBM is the number PACCAR Incorporated uses for this campaign in its own paperwork and in the letter it sends owners. 21V906000 is the number NHTSA files it under. One recall, two references — dealers and service departments generally quote the manufacturer's.

Does this recall repair cost anything?

No. Federal law requires the manufacturer to remedy a safety defect or a compliance failure at no charge, for vehicles up to 15 years old measured from the date of first sale. A dealer that asks you to pay for a recall repair is in the wrong.

How do I know whether my vehicle is included?

By VIN, not by model year. The manufacturer files a build range with NHTSA and only vehicles inside it are covered, so two identical-looking cars from the same year can differ. NHTSA's own lookup checks a VIN against the manufacturer's list.

What if the repair is not available yet?

It happens, and often. Manufacturers must notify owners when a defect is found even if the parts or the software are not ready, then notify them a second time once the remedy exists. The remedy filed for this campaign is described above.

What did the manufacturer say was wrong?

The problem, risk and fix quoted on this page are the manufacturer's own words as filed with NHTSA under 49 CFR Part 573. WhichTrim does not paraphrase them.

Who started this recall?

NHTSA's record credits the manufacturer. A recall can begin with the manufacturer's own testing, with a defect investigation, or with a compliance test against a Federal Motor Vehicle Safety Standard.