Noise from transmission in D, S, or L positions/modes

Probable cause(s)

• Drive pulley, driven pulley, pulley shaft, steel belt, and pulley related parts worn or damaged
• Input shaft assembly worn or damaged
• Secondary drive/driven gear worn or damaged
• Final driven gear worn or damaged
• Control shaft, roller, detent lever, and detent spring worn or damaged
• Parking brake pawl and parking shaft worn or damaged
• Parking pawl spring worn or damaged

Notes 

• Check the drive pulley, the driven pulley, the pulley shafts, the steel belt, and pulley related parts for wear and damage. If there are worn or damaged, replace the transmission housing assembly .
• Inspect the input shaft assembly for wear and damage. If the input shaft assembly is worn or damaged, replace it and also check the related part of the input shaft assembly for wear and damage.
• Check the secondary drive/driven gear for wear and damage.
• Check the final driven gear for wear and damage.
• Check the control shaft, roller, detent lever, and detent spring for wear and damage.
• Check the parking brake pawl and the parking shaft for wear and damage. If the parking brake pawl or the parking shaft are worn or damaged, replace them and also check the park gear for wear and damage.
• Check the parking pawl spring for wear and damage.