GM Service Manual Online
For 1990-2009 cars only

 

1-2 Shift @ +/- 3 mph

2-3 Shift @ +/- 4 mph

3-4 Shift @ +/- 5 mph

Downshifts @ +/- 4 mph

TCC Apply 3rd 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

 

 

 

 

 

WKR

LN2

9

14.5

21

18

25

39.5

39

45

67

30

11.5

6

26

WBR

LD9

9

15

28

17

29

51

34

51

79

30

11

8

22