- Rattle - occurs at idle or at light acceleration from a stop
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- Damaged engine or transmission mounts.
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- A loose front pipe heat shield.
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- REPAIR or INSTALL a new heat shield as necessary.
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- Loose inspection plate or dust cover plate.
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- Loose flexplate to converter nuts.
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- Whine - pitch increases with vehicle speed. Starts in first and second gear, decreases or goes away at higher gears
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- Damaged or worn low one-way clutch.
- Damaged or worn intermediate one-way clutch.
- Friction elements.
- Damaged or worn planetary or sun gear.
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- Whine - the pitch changes with engine speed
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- A worn or damaged accessory drive component.
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- CARRY OUT the Engine Accessory Test. REPAIR or INSTALL new components as necessary.
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- Partially blocked filter.
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- Worn or damaged torque converter.
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- Worn or damaged front pump.
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- Whine - pitch changes with vehicle speed
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- Speedometer cable or gears.
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- REPAIR or INSTALL new cables or gears as necessary.
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- Whine/moan type noise - pitch increases or changes with vehicle speed
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- Damaged engine or transmission mount.
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- U-joints worn or damaged.
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- INSPECT the U-joints for wear or damage. INSTALL new U-joints as necessary.
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- Damaged or worn differential ring and pinion.
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- Planetary gears nicked or chipped.
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- Whistle - noise is high pitched, constant. Changes in pitch with throttle position
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- Hydraulic pressure in the main control.
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- Incorrect band/clutch apply pressure.
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- Worn or damaged torque converter.
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- Clunk - occurs when shifting from PARK to a drive or reverse position
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- Damaged powertrain mounts.
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- Damaged or worn pinion bearings.
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- CHECK for abnormal bearing play or roughness. INSTALL new bearings as necessary. Refer to WHEEL BEARING CHECK .
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- Worn or galled driveshaft slip yoke splines.
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- CLEAN and INSPECT the splines of the yoke. INSTALL a new slip yoke as necessary.
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- Worn friction elements or excessive clutch pack end plate play.
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- INSPECT the transmission for wear. CHECK that all end play and clearances are within specification. REPAIR or INSTALL new components as necessary. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION
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- Bump - occurs when shifting from PARK to a drive or reverse position. Similar to Clunk but with no sound
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- Incorrect driveline angles.
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- CHECK for correct driveline angles. REPAIR as necessary.
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- Worn or damaged main control solenoids or valves.
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- Vibration - a high frequency (2080 Hz) that is felt through the seat or gear shifter. Changes with engine speed
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- Transmission cooler lines grounded out.
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- CHECK the transmission cooler lines. REPAIR as necessary.
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- Flexplate to torque converter nuts loose.
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- Fluid filler tube grounded out.
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- CHECK the fluid filler tube. REPAIR as necessary.
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- Shift cable incorrectly routed, grounded out or loose.
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- Shutter or chatter - occurs with light to medium acceleration from low speeds or a stop
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- Electrical inputs/outputs.
- Vehicle wiring harness.
- Incorrect inputs/outputs from the powertrain control module (PCM), digital transmission range (TR) sensor, brake pedal position (BPP) sensor, throttle position (TP) sensor, transmission speed sensor (TSS), output speed shaft (OSS) sensor or the torque converter clutch (TCC).
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- CARRY OUT a Torque Converter Clutch Operation Test. RUN on-board diagnostics or self-test. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION
. CLEAR the DTC's, road test and rerun on-board diagnostics or self-test.
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