GM Service Manual Online
For 1990-2009 cars only

Hydra-Matic 4T80-E Shift Speed Chart (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

11

23

36

21

46

69

39

63

113

37

17

6

41

MSN

G

11

21

34

21

44

67

37

60

103

35

16

7

41

MDN*

G

11

27

36

21

52

70

39

78

114

37

17

6

41

MSN*

G

11

24

35

21

48

70

37

73

111

35

16

7

48

Engine Disp. - 4.0L

Engine RPO - L47

Engine VIN - C

* - Performance Shift Pattern