Vehicle recall 03V170000 · May 6, 2003
Best GN50K, GNDD24KOR and 24 more models
On certain trailers equipped with sealco spring brake control valve assemblies incorporated in arvinmeritor axles, part nos. 110700 and 110800, there is a recessed area on top of…
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- On certain trailers equipped with sealco spring brake control valve assemblies incorporated in arvinmeritor axles, part nos. 110700 and 110800, there is a recessed area on top of the valve in which a brass guide pin fits down inside the body of the valve and is held in place by a steel snap ring. The recessed area allows accumulation of water, dirt, and/or chemicals to build up behind the snap ring to the point where it will no longer contain the guide pin resulting in a failure of the air valve.
- Consequence
- Failure of the valve in an empty or lightly loaded trailer while the vehicle is in motion could result in a hard application of the spring brakes, possibly locking up the trailer wheels and resulting in a vehicle crash.
- Remedy
- Sealco will provide a repair kit and installation instructions to customers free of charge. Owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact sealco at 602-253-1007 or best at 262-626-8481.
- Notes
- Also, customers can contact the national highway traffic safety administration's auto safety hotline at 1-888-dash-2-dot (1-888-327-4236).
Recall details
- NHTSA campaign
- 03V170000
- Reported to NHTSA
- May 6, 2003
- Filed by
- BEST TRAILER CORPORATION
- Vehicles potentially affected
- 52
- Initiated by
- NHTSA’s Office of Defects Investigation
- Components
- Service brakes, air › Supply › Check valve
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
- Best CFP20T (1998-2001): 2001, 2000, 1999, 1998
- Best CFP2573 (1998-2001): 2001, 2000, 1999, 1998
- Best CHP20TPS (1998-2001): 2001, 2000, 1999, 1998
- Best CHP2573PS (1998-2001): 2001, 2000, 1999, 1998
- Best GHP25T (1998-2001): 2001, 2000, 1999, 1998
- Best GN50K (1998-2002): 2002, 2001, 2000, 1999, 1998
- Best GNDD24KOR (1998-2002): 2002, 2001, 2000, 1999, 1998
- Best GNDD50K3 (1998-2002): 2002, 2001, 2000, 1999, 1998
- Best Gnddtck (1998-2002): 2002, 2001, 2000, 1999, 1998
- Best GTL50K3 (1998-2002): 2002, 2001, 2000, 1999, 1998
- Best TBT10X (1998-1999): 1999, 1998
- Best TBT20 (1998-1999): 1999, 1998
- Best TNT20K (1998-2002): 2002, 2001, 2000, 1999, 1998
- Best TNT24KD (1998-2002): 2002, 2001, 2000, 1999, 1998
- Best TNT30K (1998-2002): 2002, 2001, 2000, 1999, 1998
- Best TNT30KFD (1998-2002): 2002, 2001, 2000, 1999, 1998
- Best TNT40K (1998-2002): 2002, 2001, 2000, 1999, 1998
- Best TNT60K3 (1998-2002): 2002, 2001, 2000, 1999, 1998
- Best TPS24K (1998-2002): 2002, 2001, 2000, 1999, 1998
- Best TT20 (1998-1999): 1999, 1998
- Best TTL24K (1998-2002): 2002, 2001, 2000, 1999, 1998
- Best TTL30K (1998-2002): 2002, 2001, 2000, 1999, 1998
- Best TTL40K (1998-2002): 2002, 2001, 2000, 1999, 1998
- Best TTL44K (1998-2002): 2002, 2001, 2000, 1999, 1998
- Best TTL50K3 (1998-2002): 2002, 2001, 2000, 1999, 1998
- Best TTL60K3 (1998-2002): 2002, 2001, 2000, 1999, 1998
Has your Best been repaired?
Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.
NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Best dealer can also check your VIN. Recall repairs are free.