GM Service Manual Online
For 1990-2009 cars only

Shift Speed 4.2L (LL8) M30

 

Min. Throttle Upshift

WOT (mph/rpm)

WOT 3-1

D1 2-1

MIN TCC ON

Trans Cal

Trans Model

Axle Ratio

1-2

2-3

3-4

1-2

2-3

3-4

--

--

--

A

SDD, TDD

3.42

13.5

26.6

34.8

49.5/6100

93.1/6100

N/A

39

41

44.5

B

SDD, TDD

3.73

12.4

24.4

31.9

45.4/6100

85.3/6100

N/A

36

39

40.4

C

SDD, TDD

4.10

11.3

22.2

29

41.3/6100

77.7/6100

N/A

32

34.2

36.8

Shift Speeds are Given in MPH, except where noted.


Shift Speed 5.3L (LH6) M30 3.42:1 Final Drive

Percent Throttle

Trans Cal.

Normal (Default)

12.5

25

50

75

100

Km/h

mph

Km/h

mph

Km/h

mph

Km/h

mph

Km/h

mph

1-2 Upshift

17.7

11.0

24.1

15.0

44.0

27.3

60.8

37.8

64.7

40.2

2-3 Upshift

30.6

19.0

37.8

23.5

70.8

44.0

103.2

64.1

121.5

75.5

3-4 Upshift

40.2

25.0

48.3

30.0

103.0

64.0

--

--

--

--

2-1 Down Shift

12.9

8.0

12.9

8.0

12.9

8.0

18.0

11.2

53.1

33.0

3-2 Down Shift

24.9

15.5

26.6

16.5

41.8

26.0

77.3

48.0

109.9

68.3

4-3 Down Shift

35.4

22.0

37.8

23.5

74.0

46.0

117.6

73.1

--

--

TCC Apply 4th Gear

60.0

37.3

71.6

44.5

125.4

77.9

--

--

--

--

LH6/M30 GMT360/370

Normal


Shift Speed 5.3L (LH6) M30 3.73:1 Final Drive

Percent Throttle

Trans Cal.

Normal (Default)

12.5

25

50

75

100

Km/h

mph

Km/h

mph

Km/h

mph

Km/h

mph

Km/h

mph

1-2 Upshift

16.2

10.0

22.0

14.0

40.0

25.0

55.8

34.7

59.3

37.0

2-3 Upshift

28.0

17.4

33.0

21.0

64.8

40.3

94.6

58.8

111.3

69.2

3-4 Upshift

36.8

23.0

44.2

27.5

94.4

58.7

--

--

--

--

2-1 Down Shift

11.7

7.3

11.7

7.3

11.7

7.3

16.5

10.3

48.7

30.3

3-2 Down Shift

22.8

14.2

24.3

15.1

38.3

23.8

70.8

44.0

100.7

62.6

4-3 Down Shift

32.5

20.2

34.5

21.0

67.9

42.2

107.8

67.0

--

--

TCC Apply 4th Gear

65.0

34.2

65.6

40.8

114.9

71.4

--

--

--

--

LH6/M30 GMT360/370

Normal


Shift Speed 6.0L (LS2) M70 - Trailblazer SS

 

Min. Throttle Upshift Km/h (mph)

WOT Upshift Km/h (mph)

WOT 3-1 Downshift Km/h (mph)

Manual D1 (2-1) Downshift Km/h (mph)

MIN TCC ON 4th Gear Km/h (mph)

Calibration

Normal

Body

Axle

1-2

2-3

3-4

1-2

2-3

3-4

--

--

--

--

S/T

4.10

12.0

(7.5)

29

(18)

40.2

(25)

70.81

(44)

130.3

(81)

N/A

54.7

(34)

62.0

(38.5)

57.1

(35.5)