Beretta V6-173 2.8L (1989)
Shifter M/T: Customer Interest
M/T - Shift Lever Rattle/Buzz Noise In 3rd or 4th Gear
Number:
89-137-7B
Section:
7B
Date:
APRIL, 1989
Subject:
SHIFT LEVER RATTLE/BUZZ NOISE IN 3RD OR 4TH GEARS, ISUZU 5-SPEED M/T
Model and Year:
1985-89 J, L CARS WITH ISUZU 5-SPEED M/T
TO:
ALL CHEVROLET DEALERS
Chevrolet Dealer Service Bulletin 86-112 (Section 7B), dated May 1987 is being cancelled and superseded to provide additional repair information. All
copies of 86-112 should be discarded.
Some 1985-89 J and L cars equippped with Isuzu 5-Speed manual transaxles may exhibit a rattle or buzzing type noise through the shifter handle while
driving in 3rd or 4th gears. This noise condition is normally caused by a run-out condition between the 3-4 synchronizer and the 3rd or 4th input gears.
This condition has been corrected during the 1989 model year.. Therefore any 1989 vehicle equipped with an Isuzu unit built on or after serial number
IX17J01 should not have this condition. The serial number is printed on the transmission bar code label, which is located on the clutch housing. The
serial number should be read as follows:
Positions 1.........Corp. Name
(i.e. I = Isuzu)
2.........Month of build 1-9, X, Y, or Z
(i.
e. 2 = Feb., 7 = July, X = Oct., Z = Dec.) 3,4.......Day of month built 1-31
(i.
e. 17 = 17th day of the month) 5.........Year of build (i.e. J-Z = 1988, A-I = 1989)
Examples:
Unit IX17J01 = built on Oct. 17, 1988. Unit I130B35 = built on Jan. 30, 1989.
To repair this condition install a new 3rd/4th synchronizer assembly, 3rd/4th fork assembly, and a 3rd or 4th input gear. Refer to the following chart
when ordering parts from GMSPO.
ENGINE
MODEL
PART
DESCRIPTION
BODY
VIN
YEAR
NUMBER
Fork - 3rd/4th
All
All
All
94464752
Synchronizer Asm.
All
All
All
94249573
-
3rd/4th
3rd Input Gear
J
1
88-89
94149668
J
1
85-87
94139574
L
1
88-89
94139574
4th Input Gear
J
1
88-89
94139575
J
1
85-87
94139576
L
1
88-89
94139576
Parts are currently available from GMSPO.
Use applicable Labor Operation Number and Time.
