Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2012CHEVY EXPRESS G2500, VAN PASSENGER, 4.8L ENG VIN AREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1230 (AUTOMATIC TRANSMISSION - 4L60-E/4L65-E/4L70-E - INTRODUCTION (2 OF 2))SPECIFICATIONSSHIFT SPEED
2012 Chevrolet Chevy Express G2500, Van Passenger, 4.8L Eng VIN A
Shift Speed
2012 Chevrolet Chevy Express G2500, Van Passenger, 4.8L Eng VIN ASECTION Shift Speed
WARNING: This page is about a different car, the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Shift Speed - 5.3L and 4.8L, 3.42:1 Final Drive
| 5.3L (LY5, LMG, LC9) 4.8L (LY2) 3.42:1 Final Drive | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Percent Throttle | ||||||||||
| Trans Cal. | 12.5 | 25 | 50 | 75 | 100 | |||||
| Normal (Default) | Km/h | mph | Km/h | mph | Km/h | mph | Km/h | mph | Km/h | mph |
| 1-2 Upshift | 18 | 11.1 | 25 | 15.5 | 45 | 28.0 | 58 | 36.0 | 62 | 38.5 |
| 2-3 Upshift | 31.5 | 19.5 | 41 | 25.5 | 75 | 46.6 | 102 | 63.4 | - | - |
| 3-4 Upshift | 44 | 27 | 62 | 38.5 | 114 | 70.8 | - | - | - | - |
| 2-1 Down Shift | 13.5 | 8.4 | 13.5 | 8.4 | 13.5 | 8.4 | 13.5 | 8.4 | 52 | 32.3 |
| 3-2 Down Shift | 26.5 | 16.5 | 30 | 18.6 | 44 | 27.3 | 67 | 41.6 | 122 | 75.8 |
| 4-3 Down Shift | 38 | 23.6 | 41 | 25.5 | 71 | 44.1 | 121 | 75.2 | - | - |
| TCC Apply 4th Gear | 66 | 41.0 | 73 | 45.4 | - | - | - | - | - | - |
| GMT 900 5.3L/4.8L 4L60-E (M30) N/V = 23.20 |
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Shift Speed - 5.3L and 4.8L, 4.10:1 Final Drive
| 5.3L (LY5, LMG, LC9) 4.8L (LY2) 4.10:1 Final Drive | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Percent Throttle | ||||||||||
| Trans Cal. | 12.5 | 25 | 50 | 75 | 100 | |||||
| Normal (Default) | Km/h | mph | Km/h | mph | Km/h | mph | Km/h | mph | Km/h | mph |
| 1-2 Upshift | 16 | 9.9 | 21.5 | 13.4 | 38 | 23.6 | 51 | 31.7 | 53 | 32.9 |
| 2-3 Upshift | 26 | 16.2 | 35 | 21.7 | 64 | 39.8 | 89 | 55.3 | 106 | 65.9 |
| 3-4 Upshift | 37 | 23.0 | 52 | 32.3 | 97 | 60.3 | - | - | - | - |
| 2-1 Down Shift | 12 | 7.5 | 12 | 7.5 | 12 | 7.5 | 12 | 7.5 | 45 | 28.0 |
| 3-2 Down Shift | 22 | 13.7 | 25 | 15.5 | 37 | 23.0 | 56 | 34.8 | 102 | 63.4 |
| 4-3 Down Shift | 32 | 19.9 | 37 | 23.0 | 67 | 41.6 | 103 | 64.0 | - | - |
| TCC Apply 4th Gear | 55 | 34.2 | 61 | 37.9 | 118 | 73.3 | 121 | 75.2 | 121 | 75.2 |
| GMT 900 5.3L/4.8L 4L60-E (M30) N/V = 27.81 |
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Shift Speed - 5.3L and 4.8L, 3.23:1 Final Drive
| 5.3L (LY5, LMG, LC9) 4.8L (LY2) 3.23:1 Final Drive | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Percent Throttle | ||||||||||
| Trans Cal. | 12.5 | 25 | 50 | 75 | 100 | |||||
| Normal (Default) | Km/h | mph | Km/h | mph | Km/h | mph | Km/h | mph | Km/h | mph |
| 1-2 Upshift | 19 | 11.8 | 26.4 | 16.4 | 47.6 | 29.5 | 61.4 | 38.1 | 69.2 | 39.8 |
| 2-3 Upshift | 33.3 | 20.6 | 43.4 | 26.9 | 77.7 | 48.2 | 108 | 67.1 | - | - |
| 3-4 Upshift | 46.5 | 28.8 | 65.6 | 40.7 | 120.7 | 74.9 | - | - | - | - |
| 2-1 Down Shift | 14.2 | 8.8 | 14.2 | 8.8 | 14.2 | 8.8 | 14.2 | 8.4 | 55 | 34.1 |
| 3-2 Down Shift | 28 | 17.3 | 31.7 | 19.6 | 46.5 | 28.8 | 70.9 | 44 | - | - |
| 4-3 Down Shift | 40.2 | 24.9 | 43.4 | 26.9 | 75 | 46.6 | - | - | - | - |
| TCC Apply 4th Gear | 69 | 42.8 | 77.2 | 47.9 | - | - | - | - | - | - |
| GMT 900 5.3L/4.8L 4L60-E (M30) | ||||||||||
Shift Speed - 5.3L and 4.8L, 3.73:1 Final Drive
| 5.3L (LY5, LMG, LC9) 4.8L (LY2) 3.73:1 Final Drive | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Percent Throttle | ||||||||||
| Trans Cal. | 12.5 | 25 | 50 | 75 | 100 | |||||
| Normal (Default) | Km/h | mph | Km/h | mph | Km/h | mph | Km/h | mph | Km/h | mph |
| 1-2 Upshift | 17.5 | 10.8 | 23.6 | 14.6 | 41.7 | 25.9 | 56 | 34.7 | 58.2 | 36.1 |
| 2-3 Upshift | 28.5 | 17.7 | 38.4 | 23.8 | 70 | 43.4 | 110.5 | 68.6 | 116.5 | 72.3 |
| 3-4 Upshift | 40.6 | 25.2 | 57.1 | 35.4 | 106.6 | 66.2 | - | - | - | - |
| 2-1 Down Shift | 13 | 8 | 13 | 8 | 13 | 8 | 13 | 8 | 49.4 | 30.6 |
| 3-2 Down Shift | 24.1 | 14.9 | 27.4 | 17 | 40.6 | 25.2 | 61.5 | 38.2 | 112.1 | 69.6 |
| 4-3 Down Shift | 35.1 | 21.8 | 40.6 | 25.2 | 73.6 | 45.7 | 113.2 | 70.0 | - | - |
| TCC Apply 4th Gear | 60.4 | 37.5 | 67 | 41.6 | - | - | - | - | - | - |
| GMT 900 5.3L/4.8L 4L60-E (M30) | ||||||||||
Shift Speed - 6.0L, 4.10:1 Final Drive
| 6.0L (L76) 4.10:1 Final Drive | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Percent Throttle | ||||||||||
| Trans Cal. | 12.5 | 25 | 50 | 75 | 100 | |||||
| Normal (Default) | Km/h | mph | Km/h | mph | Km/h | mph | Km/h | mph | Km/h | mph |
| 1-2 Upshift | 17.3 | 10.7 | 23.9 | 14.8 | 47.3 | 29.3 | 59.5 | 37 | 63.6 | 39.5 |
| 2-3 Upshift | 28 | 17.3 | 40 | 24.8 | 73.6 | 45.7 | 100.2 | 62.2 | 107.0 | 66.5 |
| 3-4 Upshift | 39.3 | 24.4 | 54.5 | 33.8 | 106 | 65.8 | - | - | - | - |
| 2-1 Down Shift | 11.5 | 7.1 | 11.5 | 7.1 | 11.5 | 7.1 | 11.5 | 7.1 | 53.1 | 33 |
| 3-2 Down Shift | 20 | 12.4 | 20 | 12.4 | 39.4 | 24.5 | 62.7 | 39 | 100.5 | 62.4 |
| 4-3 Down Shift | 33 | 20 | 33 | 20 | 65.1 | 40.4 | 123.1 | 76.5 | - | - |
| TCC Apply 4th Gear | 57.9 | 36 | 66.7 | 41 | 120.6 | 74.9 | 120.6 | 74.9 | 120.6 | 74.9 |
| GMT 900 GMT 931 6.0L (L76) 4L70-E (M70) | ||||||||||
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.