VUE AWD L4-2.2L VIN D (2005)
Fluid - CVT: Customer Interest
A/T Controls - Hesitation/Grinding Noises
# 03-07-30-051A: Low Speed Grind Noise and/or Hesitation While Driving (Install New Transmission Control Module (TCM) Calibration and Add
New Transmission Fluid and Additive) keyword VT25E (VTi)
(Oct 1, 2004)
Subject:
Low Speed Grind Noise and/or Hesitation While Driving (Install New Transmission Control Module [TCM] Calibration and Add New Transmission
Fluid and Additive)
Models:
2003-2005
Saturn VUE Vehicles with VT25E (VTi) Transaxle (RPO M75/M16)
Attention:
Fixed Operations Manager and Technician
This bulletin is being revised to update models, service procedures, part numbers, and labor operations. Please discard Corporate Bulletin Number
03-07-30-051 (Section 07 - Transmission/Transaxle).
Condition
Condition # 1:
Some customers may comment on a low speed grind noise that occurs at approximately 5-12 mph (8-19 km/h) during a vehicle coast down, during which
the driver's foot is off the accelerator. The customer may hear the same noise, for a short duration, when lightly applying the accelerator pedal within the
same vehicle speed range.
Condition # 2:
Some customers may comment that while driving on rough or slippery road surfaces such as bumps, railroad tracks, or while turning a corner, the
maneuver may result in a hesitation.
Cause
Cause # 1:
The belt drive system is commanded to a ratio that causes a unique load on the drive belt, which generates belt noise during vehicle coast down and light
pedal apply transitions.
Cause # 2:
A fluctuating wheel speed may be recognized by the TCM as wheel slip. The TCM may inadvertently invoke a protection algorithm to minimize the
wheel slip and result in a temporary lack of power or perceived hesitation.
Correction
Install the appropriate new TCM calibration (refer to Calibration Information table). Drain and re-fill transaxle fluid two times using DEX-CVT(R) fluid,
P/N 15250985 - gallon, P/N 15234609 - quart.
After the second consecutive drain and fill, add one unit (10 mL [0.33 fluid oz] syringe) of DEX-CVT(R) additive, P/N 15231847.
The new calibration will not correct a grinding noise condition unless the new DEX-CVT(R) Fluid, P/N 15234609, and additive, P/N 15231847, is
incorporated in the repair process.
Service Procedure
1.
Determine current TCM calibration I.D. number.
1.1
Connect Tech 2 scan tool to the vehicle.
1.2
Navigate to the 2.2L (VIN D) powertrain Menu.
1.3
Select ID information.