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For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 1999 🢒 Aurora 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T80-E 🢒 Shift Speed

Hydra-Matic 4T80-E Shift Speed Table (1998 G-car)

 

1-2 Shift

@ +/- 3 mph

2-3 Shift

@ +/- 4 mph

3-4 Shift

@ +/- 5 mph

4-3 Coast Down-shift @ +/- 4 mph

3-2 Coast Down-shift @ +/- 4 mph

2-1 Coast Down-shift @ +/- 4 mph

TCC Apply 4th Gear

% of TPS

10

25

50

10

25

50

10

25

50

Model

Series

 

 

 

MDN

G

7

17

34

13

31

63

20

50

101

37

17

6

41

MSN

G

7

16

34

13

28

58

18

48

94

35

16

7

41

MDN*

G

8

18

34

14

32

62

20

51

102

37

17

6

41

MSN*

G

7

17

34

13

28

58

18

48

94

35

16

7

48

Engine Displacement - 4.0L

Engine RPO - L47

Engine VIN - C

* - Performance Shift Pattern