Transfer Case Module - Bump/Noise on Acceleration

File In Section: 04 - Driveline Axle

Bulletin No.: 02-04-21-001

Date: February, 2002

TECHNICAL

Subject:
Bump or Noise when Accelerating from a Stop, Surge in 1st Gear
(Reprogram ATCM)

Models:
2002 Oldsmobile Bravada
with All-Wheel Drive and 4.2L Engine (VIN S - RPO LL8)
Built Prior to VIN Breakpoint 22239887

Condition

Some customers may comment on a bump or noise when accelerating from a stop. Also, customers may comment on a surge condition under moderate to hard acceleration while the vehicle is in first gear.

Correction

Reprogram the ATC Active Transfer Case Module with the appropriate calibration from the table below.

Parts Information





The calibration listed is an electronic calibration and is NOT available from GMSPO. Calibrations will be available from Techline starting September 2001, on the TIS 2000 version TIS 10/2001 data update or later.

Warranty Information





For vehicles repaired under warranty, use the table.





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