VehicleVerdict

1991 Oshkosh M Line problems

Verdict · NHTSA data

Limited data — recalls on file

NHTSA has just 0 complaints on file for the 1991 Oshkosh M Line — too few to judge reliability from owner reports alone — but 2 recall campaigns apply to this year, so any used example should have its VIN checked for completed recall work.

0

NHTSA complaints

2

Recalls

0

Investigations

0

Crash-involved

0

Fires reported

0

Injuries

0

Deaths

—

NCAP overall

How does 1991 compare to other M Line years?

M Line NHTSA complaints by model year, 1991 highlighted2 complaints1990: 0 complaints1991: 0 complaints1992: 0 complaints1993: 2 complaints1994: 0 complaints
M Line NHTSA complaints by model year, 1991 highlighted. Red bars are years to avoid.

See all M Line years to avoid →

Does the 1991 Oshkosh M Line have recalls?

2 NHTSA recall campaigns on file. Recall repairs are free at franchised dealers.

95V234000Fuel SystemDecember 7, 1995 · 876 units

Defect

TWO TOP MOUNTING STRAPS SECURE THE FUEL TANK TO THE FRAME. BREAKAGE HAS OCCURRED WHERE THE STRAP BOLTS TO THE FRAME RAIL.

Consequence

IF THE STRAP BREAKS, THE FUEL TANK CAN MOVE AND RUB AGAINST THE FLOOR OF THE BODY AND THE FUEL LINES CAN BE DAMAGED.

Remedy

DEALERS WILL INSTALL A STRONGER STRAP REPLACING THE UPPER STRAP. A FRAME CROSSMEMBER/CHANNEL, DESIGNED TO BOLT ONTO THE FRAME LOWER FLANGES DIRECTLY BEHIND THE FUEL TANK, WILL BE INSTALLED WHEN THE CHASSIS DESIGN DID NOT PLACE A FRAME CROSSMEMBER WITHIN 2" MEASURED FROM THE REAR OF THE FUEL TANK.

94V067000Fuel SystemApril 11, 1994 · 842 units

Defect

AN "L" SHAPED BRACKET WELDED TO THE FUEL TANK SUFFERS FROM FATIGUE FAILURE OF THE STRAP WELD TO THE FUEL TANK. WHEN ONE STRAP FAILS, THE TANK WILL ALLOW THE TANK TO MOVE WILL THE VEHICLE IS IN MOTION, CAUSING INCREASED FATIGUE TO OTHER TANK ATTACHMENT WELDS.

Consequence

IF SEVERAL TANK STRAP WELDS FAIL BEFORE CORRECTIVE ACTION CAN BE PERFORMED, THE FUEL TANK CAN SEPARATE FROM THE VEHICLE, CAUSING A ROAD HAZARD.

Remedy

SPRINGS AT THE FOUR LOWER STRAP MOUNT CONNECTIONS TO THE LOWER FRAME HAVE BEEN POSITIONED TO COMPENSATE FOR FRAME MOVEMENT. THESE SPRINGS WILL PROVIDE CONSISTENT STRAP FORCE AROUND THE TANK REGARDLESS OF FRAME MOVEMENT.

1991 Oshkosh M Line — common questions

Is the 1991 Oshkosh M Line reliable?

The record is thin — 0 NHTSA complaints — so owner-report data can't strongly confirm reliability either way, though 2 recalls should be verified as completed.

Does the 1991 Oshkosh M Line have recalls?

Yes — NHTSA lists 2 recall campaigns affecting the 1991 Oshkosh M Line. Recall repairs are free at franchised dealers; check the VIN at nhtsa.gov/recalls to confirm the work was done.

Related

Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.

Compiled by Sharon Ben-Moshe, Founder.