Service Brakes, Hydraulic. Review the 62 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Engine And Engine Cooling. Review the 4 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Service Brakes. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

1 crash reports6 fire reports0 injury reports

Engine And Engine Cooling complaints

4 reports

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Mileage unknown · Sep 22, 2010

Engine And Engine Cooling

2002 WORKHORSE CHASSIS DOLPHIN MOTORHOME. CONSUMER STATES PROBLEMS WITH THE ENGINE STALLING *TGW THE CONSUMER STATED THE RV HAS BEEN REPEATEDLY TOWED, SERVICED AND EVEN REPAIRED ONLY TO ENCOUNTER THE SAME PROBLEM. THE ENGINE WOULD SUDDENLY STALL WITH NO WARNING. WITHIN A PERIOD OF 10 SECONDS, THE POWER BRAKES AND STEERING BECA…

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NHTSA ODI #10356489

Mileage unknown · Oct 28, 2008

Engine And Engine CoolingService Brakes, Hydraulic

2002 BOUNDER WITH CHEVY WORKHORSE CHASSIS BRAKE SYSTEM FAILURE. *NJ THE CONSUMER WAS INFORMED THE FRONT CALIPER ON THE PASSENGER SIDE HAD SEIZED AND DESTROYED ALL THE PREVIOUS BRAKE WORK THE CONSUMER HAD DONE 56 MILES AGO. THE LEFT FRONT OIL SEAL WAS LEAKING. *JB

NHTSA ODI #10247071

15,850 miles · Oct 9, 2008

Engine And Engine Cooling

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WHILE DRIVING DOWN THE ROAD, THE ENGINE JUST SHUTS DOWN. THIS HAPPENS AT ANYWHERE FROM 2 TO 10 MILES AFTER STARTING DOWN THE HIGHWAY. THIS HAS HAPPENED A TOTAL OF FOUR TIMES TO ME. IT ACTED AS IF THE IGNITION IS TURNED OFF. UPON THE SECOND SHUT DOWN, A SCAN TOOL WAS USED AND PRODUCED THE CODE INDICATING THERE WAS A MALFUNCTION IN THE CRANKSHAFT POSITION SENSOR. AFTER PULLING OFF THE ROAD AND ALLOWING THE ENGINE TO SIT FOR ABOUT 30 SECONDS THE ENGINE CAN BE RESTARTED AND DRIVEN FOR AS FAR AS 125 MILES WITH NO FURTHER PROBLEM. EACH AND EVERY TIME SINCE THE INITIAL START OF THE PROBLEM, THE PROBLEM HAS OCCURRED EACH TIME THE VEHICLE WAS DRIVEN. THIS ENGINE IS A 8.1 L CHEVROLET ENGINE INSTALLED IN A 2002 RV WITH A CHASSIS BUILD DATE OF 9/28/01. ALL OF THE SYMPTOMS ARE EXACTLY AS NOTED IN THE RECALL CAMPAIGN ISSUED BY GM. GM RECALL NO. 06083. THE RV CHASSIS MANUFACTURER HAS REFUSED TO ACKNOWLEDGE THAT GM HAS A RECALL FOR THIS REASON, AND TO PROVIDE ME WITH THE CRANKSHAFT POSITION SENSOR FOR ME TO REPLACE. I'M AFRAID TO DRIVE THE VEHICLE TO THE DEALER TO GET IT LOOKED AT AND THEY TOLD ME THAT BECAUSE IT IS AN INTERMITTENT PROBLEM, THEY WOULD HAVE TO DRIVE THE VEHICLE TO REPRODUCE THE PROBLEM AND THEY DIDN'T WANT TO DO THAT. ONCE THE ENGINE SWITCH IS TURNED OFF AND THEN BACK ON THE CODE DOES NOT APPEAR, MAKING IT DIFFICULT FOR SERVICE TECH"S TO DIAGNOSE THE PROBLEM. NO ACCIDENTS OR DEATHS HAVE RESULTED FROM THIS PROBLEM BUT THIS COULD BE A SEVERE SAFETY ISSUE. *TR

NHTSA ODI #10245013

16,000 miles · Apr 3, 2008

Engine And Engine CoolingService Brakes, HydraulicSuspension

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TL*THE CONTACT OWNS A 2002 WORKHORSE W22 TRAILER. WHEN THE CONTACT EXITED THE VEHICLE, HE SMELLED THE BRAKES AND WHEEL BEARINGS BURNING. THE CONTACT REMOVED THE WHEEL AND NOTICED OIL FROM THE WHEEL BEARING COVERING THE TIRE. THE VEHICLE WAS TAKEN TO THE DEALER AND REPAIRED. IN OCTOBER OF 2007, THE CONTACT SMELLED AN ODOR COMING FROM THE REAR BRAKES. THE VEHICLE WAS TAKEN TO THE DEALER, BUT THEY COULD NOT DUPLICATE THE FAILURE. THE CURRENT AND FAILURE MILEAGES WERE 16,000. UPDATED 04/22/08. *LJ THE CONSUMER WAS TOLD THE REAR BRAKES WOULD NOT BE REPLACED WITH UPGRADED BRAKES. THE CONSUMER STATED THE PROBLEM STILL EXISTS WITH THE BRAKES. THE CHECK ENGINE LIGHT ILLUMINATED. THE CRUISE CONTROL DID NOT COME. UPDATED

NHTSA ODI #10223219

Official recalls

09V110000 · Service Brakes, Hydraulic

Apr 3, 2009

NAVISTAR IS RECALLING CERTAIN MODEL YEAR MY 2001-2008 WORKHORSE W20, W21 AND W22 CHASSIS AND CERTAIN MODEL YEAR 2009 THROUGH 2011 MONACO RV ADMIRAL, ARISTA, MONARCH, AND RIPTIDE RECREATIONAL VEHICLES EQUIPPED WITH AXLES THAT INCLUDE BOSCH ZOPS OR ZOHT PIN SLIDE HYDRAULIC DISC BRAKES. WHEN COMBINED WITH OCCASIONAL OR SEASONAL VEHICLE OPERATION MAY EXPERIENCE CALIPERS STICKING IN THE APPLIED POSITION. THIS CAN RESULT IN ABNORMAL HEAT GENERATION AT THE WHEEL END CAUSING BRAKE DRAG. THE DRIVER WOULD NORMALLY HAVE WARNING OF THE BRAKE DRAG IF UNDETECTED BY THE DRIVER.

Consequence & remedy

Consequence: THE TEMPERATURE INCREASE AT THE WHEEL END CAN EVENTUALLY LEAD TO SOFT PEDAL CONDITIONS DUE TO BRAKE FLUID BOIL, AND POSSIBLE EXTENDED STOPPING DISTANCE INCREASING THE RISK OF A CRASH.

Remedy: WORKHORSE DEALERS WILL REPLACE ALL FOUR BOSCH BRAKE CALIPER ASSEMBLIES FREE OF CHARGE. THE SAFETY RECALL BEGAN ON SEPTEMBER 16, 2010. OWNERS MAY CONTACT WORKHORSE AT 1-877-246-7731.

04V084000 · Service Brakes, Hydraulic

Feb 18, 2004

ON CERTAIN MOTORHOME CHASSIS EQUIPPED WITH BOSCH ZOPS, THE PADS CAN DRAG ON THE ROTOR SURFACE DUE TO THE PIN SLIDE.

Consequence & remedy

Consequence: A HANG UP OR LOCK UP MAY CAUSE THE CALIPERS TO OVER HEAT AND NOT ALLOW THE DRIVER TO STOP SAFELY. THIS COULD CAUSE OVERHEATING OF THE BRAKE CALIPERS WHICH COULD RESULT IN A VEHICLE FIRE.

Remedy: DEALERS WILL INSPECT, REPAIR AND REPLACE ACCORDING TO THE PROCEDURE DEVELOPED BY BOSCH (SEE CAMPAIGN 03E064000). THE RECALL BEGAN ON AUGUST 1, 2004. OWNERS SHOULD CONTACT WORKHORSE AT 1-877-294-6773.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

EA07016 · Overheating Disc Brake Caliper

Opened Nov 16, 2007 · Closed Aug 19, 2009

Status: closed (inferred from source dates) · Service Brakes, Hydraulic

THE EA WAS OPENED TO GAIN A TECHNICAL UNDERSTANDING OF THE CAUSES FOR ONE OR MORE DISC BRAKE CALIPERS ON A SUBJECT VEHICLE TO SUFFER SEVERE OVERHEATING. THE OVERHEATING CAUSED BRAKE DRAG, MELTING ABS SENSORS, SMOKING, BRAKE LINING FIRES, AND IN SOME CASES BOILING BRAKE FLUID RESULTING IN DIMINISHED STOPPING CAPABILITY.BASED ON TESTING, WARRANTY AND COMPLAINT DATA ANALYSIS, FIELD TRIPS AND INTERVIEWS WITH OWNERS, MECHANICS AND SERVICE MANAGERS, ODI BELIEVES THE LIKELY CAUSE OF THE ALLEGED DEFECT IS WATER SWELL OF THE PHENOLIC CALIPER PISTON AND SUBSEQUENT FAILURE OF THE PISTON TO FULLY RETURN AFTER THE PEDAL IS RELEASED.A TECHNICAL REPORT IS ATTACHED WITH FULL DETAILS.

Additional source detail variants (7)

Service Brakes, Hydraulic

EA03003 · Overheating Front And Rear Brakes

Opened Apr 9, 2003 · Closed Mar 3, 2004

Status: closed (inferred from source dates) · Service Brakes, Hydraulic:foundation Components

THIS INVESTIGATION WAS DERIVED FROM INFORMATION GATHERED DURING PE02-046, BOSCH DISC BRAKE CALIPERS.THIS INVESTIGATION FOCUSED ON THE VEHICLE MANUFACTURER, NEWMAR.SUBJECT VEHICLES WERE THOSE BUILT WITH A HYDRAULIC BRAKE SYSTEM INCORPORATING THE BOSCH ZERO OFFSET PIN SLIDE (ZOPS) CALIPERS.ODI'SCONCERN WASEXCESSIVE WHEEL END HEAT, POSSIBLY RESULTING IN A WHEEL END FIRE.DURING THE INVESTIGATION, ODI DISCOVERED TWO SPECIFIC NEWMAR VEHICLE MODELS, THOSE BUILT ON NEWMAR CHASSIS AND THOSE BUILT ON A WORKHORSE CHASSIS. AS A RESULT OF THE AGENY'S INVESTIGATION INTO THIS MATTER, ALL NEWMAROWNERS WILL BE NOTIFIED (04V-019) AND THE REMEDY WILL BE APPLIED TO THEIR VEHICLES. SOME NEWMAR VEHICLES (1,795) BUILT ON THE WORKHORSE CHASSIS ARE BEING RECALLED BY WORKHORSE (04V-084).THIS INVESTIGATION IS CLOSED.FURTHER DETAILS ARE PROVIDED ON PAGES 2, 3, AND 4.COPIES OF BOTH SAFETY RECALLS ARE ATTACHED.