GM Service Manual Online
For 1990-2009 cars only

Shift Speed Table (1999 N-Car/GMX130 4T40-E/45E)

 

1-2 Shift @ +/- 3 mph

2-3 Shift @ +/- 4 mph

3-4 Shift @ +/- 5 mph

Downshifts @ +/- 4 mph

TCC Apply 4th Gear

% of TPS

10

25

50

10

25

50

10

25

50

4-3 Coast

3-2 Coast

2-1 Coast

10%

Model

Engine RPO

    

WHR

LD9

10

19

31

23

35

57

40

56

95

35

17

8

43

WCR

LG8

12

16

35

18

30

58

40

54

84

36

14

8

40

WCR

L82

12

16

35

18

30

58

39

54

85

36

14

8

42