Drivetrain - Highway Speed Vibration/Booming Noise
Classification: PD11-001Reference: ITB11-019
Date: March 4, 2011
G37 AWD; VIBRATION AND / OR BOOMING NOISE AT HIGHWAY SPEED
APPLIED VEHICLES: 2009-2011 G37 Sedan and Coupe (V36);AWD only
APPLIED VINs and DATES:
2009-2010 G37 Sedan and Coupe; AL
2011 G37 Sedan; Vehicles built before JN1CV6AR(*)BM 402938 and Oct 4. 2010
2011 G37 Sedan; Vehicles built before JN1DV6AR(*)BM652280 and Oct 4, 2010
2011 G37 Sedan; Vehicles built before JN1CV6AR(*)BM 350939 and Oct 4, 2010
2011 G37 Sedan; Vehicles built before JN1DV6AR(*)BM451028 and Oct 4, 2010
2011 G37 Coupe; Vehicles built before JN1CV6EL(*)BM 260030 and Oct 4, 2010
IF YOU CONFIRM:
One or more of the following during highway speeds:
^ Vibration felt in the seat and / or floor
^ Inside rear view mirror vibrates causing blurred reflection
^ Vibration heard from the rear parcel shelf
^ Booming noise heard
NOTES:
> All incidents become more noticeable as vehicle speed increases.
> All incidents are more noticeable on smooth roads.
ACTION:
"Free up" the rebro joint in the rear propeller shaft.
Refer to SERVICE PROCEDURE for repair instructions.
IMPORTANT:
The purpose of ACTION (above) is to give you a quick idea of the work you will be performing. You MUST closely follow the entire SERVICE PROCEDURE as it contains information that is essential to successfully completing this repair.
PARTS INFORMATION
CLAIMS INFORMATION
SERVICE PROCEDURE
1. Raise the vehicle on a lift.
2. If not found apply matching marks to the rebro joint and rear final drive (rear differential) companion flange as shown in Figure 1.
3. Unbolt the rebro joint from the companion flange.
4. Move the rebro joint away from the companion flange and then move (pivot) it around thoroughly in all directions.
Make sure the rebro joint does not bind and moves freely in all directions.
5. Re-install the rebro joint (with matching marks lined up) to the companion flange.
^ Use new nuts bolts and washers.
NOTE:
Always replace all nuts bolts and washers after every disassembly.
^ Bolts torque: 56.9 Nm (5.8 kg-m 42.0 ft lb)
^ See Figure 2 for torque sequence.
6. Verify the incident is resolved.