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Noisy in Drive

WARNING: This page is about a different car, the 2007 Suzuki XL7. However, it is still accessible from the selected car via links, so may be relevant.
CAUSES - NOISY IN DRIVE

Cause Correction
Inspect for the proper transaxle and gear oil levels prior to performing system diagnosis. Refer to TRANSFER CASE FLUID REPLACEMENT .
Water or contamination within the lubricant
Water or contamination within the lubricant, causing excessive torque converter clutch slip rate, may create a grind, growl, or moan in the rear differential or torque tube under light or steady load conditions.
Replace the lubricant and flush the transfer case of the contaminated fluid. Refer to Internal Components Cleaning and Inspection.
Loose propeller shaft mounting bolts Tighten the bolts, as required. Refer to FASTENER TIGHTENING SPECIFICATIONS - PROPELLER SHAFT .
Worn propeller shaft constant velocity joints Replace propeller shaft assembly. Refer to PROPELLER SHAFT REPLACEMENT .
Worn axle shaft constant velocity joints Replace the constant velocity joints, as required.
Loose rear axle torque tube bracket or a worn bracket bushing Tighten the bracket bolts or replace the bracket, as required.
Worn bearing in the rear differential torque tube assembly Replace the torque tube assembly.
Torque tube dampener loose or missing
A moan or exhaust leak type noise at higher engine speeds, approximately 2,000-2,500 RPM, may indicate a loose or missing dampener.
Tighten the dampener retaining bolt or replace the torque tube assembly, as required.
Incorrect gear oil in the transfer case Replace the gear oil. Refer to SEALERS, ADHESIVES, AND LUBRICANTS .
Bearing noise within the transfer case
A grinding or roar type noise will increase or decrease relative to the vehicle speed.
  1. Inspect for the proper fluid level. Fill, as required.
  2. If the noise continues, repair or replace the internal components, as required.
Gear set whine noise within the transfer case
Whine type noises will increase or decrease relative to the vehicle speed.
  1. Inspect for the proper fluid level. Fill, as required.
  2. If the noise continues, repair or replace the internal components, as required.

    Contributing factors may include:

    • Incorrect backlash between the gear sets
    • Worn or damaged gear teeth
    • Transaxle assembly noise
    • Rear differential noise