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 MANUALSCHEVROLET2006SUBURBAN C2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1748 (AUTOMATIC TRANSMISSION - ALLISON - SPECIFICATIONS)SPECIFICATIONSSELECTIVE COMPONENTS SPECIFICATIONS
2006 Chevrolet Suburban C2500, 6.0 U
Selective Components Specifications
2006 Chevrolet Suburban C2500, 6.0 USECTION Selective Components Specifications
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
1-2-3-4 Clutch Backplate
| Identification | Plate Thickness | |
|---|---|---|
| Metric | English | |
| 2420 | 11.1-11.9 mm | 0.4370-0.4685 in |
| 8521 | 11.54-12.34 mm | 0.4543-0.4858 in |
| 8522 (6222) | 11.98-12.78 mm | 0.4717-0.5031 in |
| 8523 (6223) | 12.43-13.23 mm | 0.4894-0.5209 in |
| 8524 (6224) | 12.88-13.68 mm | 0.5071-0.5386 in |
Low and Reverse Clutch Piston Housing Selective Shim
| Dimension C | Thickness | Identification | ||
|---|---|---|---|---|
| Metric | English | Metric | English | |
| 1.008-1.184 mm | 0.0397-0.0466 in | 0.245-0.295 mm | 0.0096-0.0116 in | 0 Holes |
| 1.185-1.414 mm | 0.0467-0.0557 in | 0.475-0.525 mm | 0.0187-0.0207 in | 1 Hole |
| 1.415-1.644 mm | 0.0557-0.0647 in | 0.705-0.755 mm | 0.0278-0.0297 in | 2 Holes |
| 1.645-1.874 mm | 0.0648-0.0738 in | 0.935-0.985 mm | 0.0368-0.0388 in | 3 Holes |
| 1.875-2.104 mm | 0.0738-0.0828 in | 1.165-1.215 mm | 0.0459-0.0478 in | 4 Holes |
| 2.105-2.334 mm | 0.0829-0.0919 in | 1.395-1.445 mm | 0.0549-0.0569 in | 5 Holes |
| 2.335-2.510 mm | 0.0919-0.0988 in | 1.625-1.675 mm | 0.0640-0.0659 in | 6 Holes |
Low and Reverse Clutch Steel Plate Minimum Thickness
| Minimum Thickness | Identification | |
|---|---|---|
| Metric | English | |
| 2.435 mm | 0.0959 in | 2 |
Low and Reverse Clutch Steel Selective Plate
| Dimension C | Identification | |
|---|---|---|
| Metric | English | |
| 35.3-35.86 mm | 1.393-1.412 in | 1 |
| 35.87-36.36 mm | 1.413-1.431 in | 2 |
| 36.37-37.27 mm | 1.432-1.467 in | 3 |
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.