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 MANUALSCHEVROLET2009TAHOE BASE, 4.8 CREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 4 (AUTOMATIC TRANSMISSION - 2ML70 - INTRODUCTION)SPECIFICATIONSFASTENER TIGHTENING SPECIFICATIONS
2009 Chevrolet Tahoe Base, 4.8 C
Fastener Tightening Specifications
2009 Chevrolet Tahoe Base, 4.8 CSECTION Fastener Tightening Specifications
WARNING: This page is about a different variant/trim than selected.
| Application | Ref No. * | Quantity | Size | Specification | |
|---|---|---|---|---|---|
| Metric | English | ||||
| A/Trans Auxiliary Fluid Pump Bolt - to Torque Dampener Housing | 5 | 4 | M6 x 1.0 x 65 | 9-13 N.m | 80-115 lb in |
| A/Trans Fluid Pan Bolt - to Case Assembly | 53 | 13 | M8 x 1.25 x 20 | 24-29 N.m | 18-21 lb ft |
| A/Trans Fluid Pump Cover Bolt - Torque Dampener to Case Assembly | 3 | 12 | M8 x 1.25 x 25 | 26.5-31.5 N.m | 19.55-23.23 lb ft |
| A/Trans Fluid Pump Cover Bolt - to Torque Dampener Housing Assembly | 228 | 18 | M6 x 1.0 x 45 | 9-13 N.m | 80-115 lb in |
| A/Trans Manual Shift Shaft Position Switch Bolt | 32 | 1 | M5 x 0.8 x 20 | 7-9 N.m | 62-80 lb in |
| A/Trans Rear Case Bolt - to Case Assembly | 27 | 12 | M8 x 1.25 x 30 | 26.5-31.5 N.m | 19.55-23.23 lb ft |
| A/Trans Rear Case Bolt - 2WD Output Housing Extension Assembly to Rear Case Assembly | 22 | 6 | M10 x 1.5 x 45 | 51-61 N.m | 38-45 lb ft |
| A/Trans Torque Dampener Fluid Passage Plug - to Torque Dampener Housing | 8 | 1 | Inch Series .4375-20 | 9-13 N.m | 80-115 lb in |
| A/Trans Torque Dampener Fluid Passage Plug - to Torque Dampener Housing | 9 | 1 | Inch Series .4375-20 | 9-13 N.m | 80-115 lb in |
| Control Solenoid Valve Heat Sink (wBody and TCM) Bolt | 306 | 2 | M5 x 0.8 x 53 | 5-8 N.m | 44-71 lb in |
| Center Support Bolt | 87 | 4 | M6 x 1.0 x 20 | 9-13 N.m | 80-115 lb in |
| Control Valve Channel Plate Bolt | 300 | 20 | M6 x 1.0 x 35 | 9-13 N.m | 80-115 lb in |
| Control Valve Upper Body Bolt | 38 | 4 | M6 x 1.0 x 65 | 9-13 N.m | 80-115 lb in |
| Control Valve Upper Body Bolt | 37 | 2 | M6 x 1.0 x 80 | 9-13 N.m | 80-115 lb in |
| Control Valve Lower Body Bolt | 308 | 9 | M6 x 1.0 x 55 | 9-13 N.m | 80-115 lb in |
| Drain Plug Assembly - to Fluid Pan Assembly | 55 | 1 | Inch Series .125-27 NPTF | 30-40 N.m | 22-30 lb ft |
| Drive Motor Generator Power Inverter Module Cable Terminal Bracket Bolt (Captured Bolts, cannot be removed) | - | 6 | M6 x 1.0 x 15 | 9-13 N.m | 80-115 lb in |
| Generator Drive Motor Bolt | 70 | 6 | M6 x 1.0 x 20 | 9-13 N.m | 80-115 lb in |
| Electrical Harness Retaining Nut | - | - | - | 25 N.m | 18 lb ft |
| Electrical Harness Retaining Screw | - | - | - | 50 N.m | 37 lb ft |
| Fluid Cooler Pipe to Transmission Bolt | - | - | - | 22 N.m | 16 lb ft |
| Fluid Filler Tube Nut | - | - | - | 18 N.m | 13 lb ft |
| Fuel Pipe Bracket Nuts - 2WD | - | - | - | 50 N.m | 37 lb ft |
| Fuel Pipe Bracket Nuts - 4WD | - | - | - | 25 N.m | 18 lb ft |
| Fuel Line Bracket Screw | - | - | - | 7 N.m | 62 lb in |
| Hybrid Direct, 2-3-4 Clutch Support Bolt - to Rear Case Assembly | 443 | 9 | M6 x 1.0 x 20 | 9-13 N.m | 80-115 lb in |
| Manual Shift Detent Spring Bolt | 40 | 1 | M6 x 1.0 x 16 | 9-13 N.m | 80-115 lb in |
| Park Pawl Cover Bolt - to Rear Case Assembly | 454 | 5 | M6 x 1.0 x 20 | 9-13 N.m | 80-115 lb in |
| Power Inverter Module Cable Cover Bolt - to Case Assembly | 16 | 4 | M6 x 1.0 | 9-13 N.m | 80-115 lb in |
| Power Inverter Module Cable Retaining Bolt - to Case Assembly | 14 | 4 | M6 x 1.0 x 15 | 9-13 N.m | 80-115 lb in |
| Range Selector Lever Heat Shield Bolts | - | - | - | 17 N.m | 13 lb ft |
| Range Selector Lever Nuts | - | - | - | 25 N.m | 18 lb ft |
| Torque Dampener to Flex Plate Bolts | - | - | - | 65 N.m | 48 lb ft |
| Transmission to Engine Bolts | - | - | - | 50 N.m | 37 lb ft |
| Transmission Mount to Crossmember Nuts | - | - | - | 40 N.m | 30 lb ft |
| Transmission Mount to Transmission Bolts | - | - | - | 50 N.m | 37 lb ft |
| Transmission to Transfer Case Nuts | - | - | - | 50 N.m | 37 lb ft |
| Vehicle Speed Sensor Bolt - Output Speed Sensor to Rear Case Assembly | 446 | 1 | M6 x 1.0 x 20 | 9-13 N.m | 80-115 lb in |
| *Reference number refers to the component callout number in Disassembled Views | |||||
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.