July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Tool Application: Notes

NOTE: See Fig 1 for tool component location.

Fig 1: Pinion Depth Gauge Set

G09329477

Courtesy of GENERAL MOTORS COMPANY

Tool Location

Tool Part Number

BUICK 7 1/2" RING GEAR

(1)	J-21777-43
(2)	J-21777-12 ("H" Series) J-21777-40 (Exc. "H")
(3)	J-21777-42
(4)	J-23597-11
(5)	J-23597-1
(6)	J-21777-45

BUICK 8 1/2" & 8 3/4" RING GEAR

(1)	J-21777-43
(2)	J-21777-35
(3)	J-21777-42
(4)	J-21777-29
(5)	J-21777-1
(6)	J-21777-45

CADILLAC 8 1/2" RING GEAR

(1)	J-21777-43
(2)	J-21777-35
(3)	J-21777-42
(4)	J-21777-29
(5)	J-21777-1
(6)	(Small Step) J-21777-45

MONZA 6 1/2" & 7 1/2" RING GEAR

(1)	J-21777-43
(2)	J-23597-13 (6 1/2") J-23597-12 (7 1/2")
(3)	J-23597-5
(4)	J-23597-11
(5)	J-23597-1
(6)	J-23597-4 (6 1/2") J-21777-45 (7 1/2")

CHEVROLET 7 1/2" RING GEAR

(1)	J-21777-43
(2)	J-21777-40
(3)	J-21777-42
(4)	J-23597-11
(5)	J-23597-1
(6)	J-21777-45

CHEVROLET 8 1/2" & 8 3/4" RING GEAR

(1)	J-21777-43
(2)	J-21777-35
(3)	J-8619-12
(4)	J-21777-29
(5)	J-21777-1
(6)	J-21777-45

CORVETTE 8 3/8" RING GEAR

(1)	J-21777-43
(2)	J-21777-35
(3)	J-21777-42
(4)	J-21777-36
(5)	J-21777-1
(6)	(Large Step) J-21777-45

Tool Location

Tool Part Number

CHEVROLET CHEVETTE

(1)	J-21777-43
(2)	Not Used
(3)	J-23597-21
(4)	J-23597-20
(5)	J-23597-6
(6)	J-23597-4

OLDSMOBILE 7 1/2" RING GEAR

(1)	J-21777-43
(2)	J-21777-12 (Starfire) J-21777-40 (Exc. Starfire)
(3)	J-21777-42
(4)	J-23597-11
(5)	J-23597-1
(6)	J-21777-45

OLDSMOBILE 8 1/2" & 8 3/4" RING GEAR

(1)	J-21777-43
(2)	J-21777-35
(3)	J-21777-42
(4)	J-21777-21 (8 1/2") J-21777-2 (8 3/4")
(5)	J-21777-1
(6)	J-8619-10(8 1/2") J-21777-3(8 3/4")

PONTIAC 7 1/2" RING GEAR

(1)	J-21777-43
(2)	J-23597-12 (Sunbird) J-21777-40 (Exc. Sunbird)
(3)	J-8619-12
(4)	J-23597-11
(5)	J-23597-1
(6)	J-21777-45

PONTIAC 8 1/2" & 8 3/4" RING GEAR

(1)	J-8619-13
(2)	J-21777-35
(3)	J-8619-12
(4)	J-21777-29
(5)	J-21777-1
(6)	J-8619-10