2008 Kenworth T660 problems, complaints & recalls
Updated from NHTSA data · How we count
No owner complaints are on file for the 2008 Kenworth T660 yet. There are 5 recalls for this model year.
- Complaints
- 0
- Recalls
- 5
- Crashes
- 0
- Fires
- 0
- Injuries
- 0
- Median mileage
- — at time of problem
Key facts
- The 2008 Kenworth T660 has 5 recalls on file.
- NHTSA has opened 2 defect investigations covering this vehicle.
2008 Kenworth T660 recalls (5)
- ELECTRONIC STABILITY CONTROL (ESC) · SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT
PACCAR Incorporated (PACCAR) is recalling certain 2008-2019 Peterbilt 330, 335, 337, 340, 348, 365, 367, 384, 386, 387, 388, 389, 567, 579 and 587 vehicles and 2008-2020 Kenworth T170, T270, T370, T660, T680, T800, T880, and W900 vehicles equipped with NAMUX Software. In the event that the Anti-lock Brake System (ABS) loses battery and/or ignition power to the controller, the dash warning light for the ABS may not illuminate to warn the driver of the loss of ABS. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 121, "Air Brake Systems," and 136, "Electronic Stability Control System on Heavy Vehicles."
Risk: If the driver unknowingly operates the vehicle without the ABS functioning, there would be an increased risk of a crash.
Remedy: PACCAR will notify owners, and dealers will update the NAMUX software within the cab control module, free of charge. PACCAR issued owners an interim notification on June 4, 2020. The recall began May 26, 2020. Owners may contact Kenworth customer service at 1-425-828-5888 or Peterbilt customer service at 1-940-591-4220. PACCAR's number for this recall is 20pbc AND 20KWB.
- ENGINE AND ENGINE COOLING
Paccar is recalling certain model year 2007-2011 kenworth c500, t2000, t600, and t660, as well as model year 2009-2011 peterbilt 387 and 388 trucks equipped with caterpillar c15 engine and manufactured from may 11, 2006, through september 17, 2010. Degradation of a combustion tube weld can cause radial heat impingement on the body which may burn through certain bodies used on c15 engines.
Risk: This could result in a fire.
Remedy: Caterpillar is handling the owner notification and remedy for this campaign. Please see caterpillar's defect report 11e-006. Caterpillar will replace the single piece combustion tube with a thick wall combustion tube which will not allow the heat to break through. This service will be performed free of charge. Due to a parts supply issue, owners will be notified by the end of april 2011 about the safety defect, and will then be notified again once the free remedy is available, currently estimated to be around late july 2011. Owners may contact caterpillar toll-free at 1-800-447-4986.
- FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
Paccar is recalling certain model year 2008-2012 kenworth t2000, t660, t700, t800, and w900, as well as model year 2009-2012 peterbilt 365, 367, 384, 386, 387, 388, 389, and 587 trucks equipped with paccar mx engines. The oil module centrifugal spinner filter cap in the paccar mx engine may become loose, possibly allowing the cap to come off and engine oil to partially discharge from the oil module onto exhaust components.
Risk: The discharge of engine oil onto exhaust components which are hot, such as when the engine is under significant load, may cause a fire.
Remedy: Dealers will re-torque the oil module filter cap and install a secondary retention device on the secondary centrifugal spinner filter cap. This service will be performed free of charge. The safety recall is expected to begin during march 2011. Owners may contact kenworth at 1-425-828-5440 and peterbilt at 1-940-591-4196.
- POWER TRAIN:AXLE ASSEMBLY
Paccar is recalling certain model year 2007-2008 kenworth and peterbilt vehicles manufactured from february 2, 2006 through april 30, 2007. The bearing surfaces of the extended lube universal joint that attaches the inter-axle driveline to the drive axle may become prematurely worn due to breakdown of lubrication and/or excessive heat. Prematurely worn bearing surfaces may result in the u-joint becoming loose and/or binding. This condition may result in universal joint failure, allowing the inter-axle driveline to detach from the axle.
Risk: Detachment of the driveline from the axle may cause the vehicle to lose power and become disabled in the roadway. Also, the driveline could drop from the vehicle into the roadway increasing the risk of a crash.
Remedy: Paccar is working with its supplier to remedy the vehicles free of charge. The safety recall is expected to begin during february 2011. Owners may contact kenworth at 425-828-5440 and peterbilt at 940-591-4196.
- STEERING:COLUMN
Paccar is recalling certain model year 2008-2010 trucks equipped with trw steering shafts. The circumferential weld around the steering shaft tube that welds the splined tube to the non-splined tube may be mislocated. Mislocation of the circumferential weld may allow the splined tube and non-splined tube to rotate relative to one another during a low speed, high torque turn, possibly resulting in a separation of the two tubes.
Risk: A separation of the splined and non-splined tubes would cause a loss of steering control and increase the risk of a vehicle crash.
Remedy: Dealers will inspect the steering shaft using a weld placement gauge provided by trw. Any steering shaft found to have been welded improperly will be replaced free of charge. The safety recall began on july 30, 2010. Owners may contact kenworth at 425-828-5440 and peterbilt at 940-591-4196.
NHTSA defect investigations
Driveshaft separates from tractor
SummaryOn July 13, 2010, the Office of Defects Investigations (ODI) opened an investigation on model year (MY) 2007-2009 Peterbilt tractors equipped with the (SPL170XL extended lube inter-axle driveline).ODI opened this investigation based on one Vehicle Owners Questionnaire (VOQ) and certain Peterbilt field reports.During the course of the investigation, ODI reviewed PACCAR's IR (October 22, 2010) response with associated data related to Warranty and complaint information, mined field data, interviewed customers and visited local dealers within the Washington Metropolitan area.PACCARconducted…
- EA09008Opened May 29, 2009Closed Aug 27, 2010
Horton Fan Hub Failures
PACCAR is conducting an Owner Notification Program (ONP) for select vehicles within the subject and peer populations.The ONP are attached to the closing report and can be found in the NHTSA Technical Service Bulletin (TSB) database. (TSB: 10033585, 10033584)See Closing report for investigation details.
Recent 2008 Kenworth T660 complaints
Excerpts of the newest owner complaints, lightly cleaned of personal details. Complaints are unverified owner reports.
No narrative complaints on file.
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Other 2008 Kenworth models
Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data, as of Oct 11, 2026. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. View this vehicle on NHTSA.gov Methodology