"2013-2015 altima with 4-CYL engine; cabin “boom” and/or steering/floor vibration while driving 4-CYLINDER...

Bulletin number

NTB16-084

Component

Engine

Summary

"2013-2015 altima with 4-cyl engine; cabin “boom” and/or steering/floor vibration while driving 4-cylinder engine only if you confirm: a “boom” or drone sensation is heard in the cabin area and/or a vibration is felt in the floor and/or steering wheel when driving and the engine is approximately 1,800 RPM. Action: 1. Check the gap between the rubber and metal portions of the front tube exhaust hanger (see figure 1 and page 2, figure 2). 2. If less than 1 mm (0.04 inch) gap, add shims (flat washers) between the front suspension member and front exhaust tube hanger. See page 2, figure 2 and 3. - maximum shim thickness: 4.6 mm (0.18 inch)"

Owners of these vehicles have filed 312 complaints in the engine category.