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 MANUALSPONTIAC2008GRAND PRIX BASEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 62 (ENGINE MECHANICAL)SPECIFICATIONSTHREAD REPAIR SPECIFICATIONSENGINE BLOCK - LEFT SIDE VIEW
2008 Pontiac Grand Prix Base
Engine Block - Left Side View
2008 Pontiac Grand Prix BaseSECTION Engine Block - Left Side View
WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
Engine Block - Left Side View
| Hole | Thread Size | Insert | Drill | Counterbore Tool | Tap | Driver | Drill Depth - Maximum mm (in) | Tap Depth - Maximum mm (in) |
|---|---|---|---|---|---|---|---|---|
| 1 | M8 x 1.25 | J 42385-210 | J 42385-206 | J 42385-207 | J 42385-208 | J 42385-209 | 26.5 (1.04) | 19.0 (0.784) |
| 2-3 | M11 x 2.0 | J 42385-108 | J 42385-105 | - | J 42385-106 | J 42385-107 | 69.0 (2.72) | 60.0 (2.36) |
| 4 | M8 x 1.25 | J 42385-210 | J 42385-206 | J 42385-207 | J 42385-208 | J 42385-209 | 26.5 (1.04) | 19.0 (0.784) |
| 5 | M6 x 1.0 | J 42385-205 | J 42385-201 | J 42385-202 | J 42385-203 | J 42385-204 | 22.5 (0.885) | 16.0 (0.629) |
| 6-7 | M11 x 2.0 | J 42385-108 | J 42385-105 | - | J 42385-106 | J 42385-107 | 69.0 (2.72) | 60.0 (2.36) |
| 8 | M8 x 1.25 | J 42385-210 | J 42385-206 | J 42385-207 | J 42385-208 | J 42385-209 | 26.5 (1.04) | 19.0 (0.784) |
| 9 | M11 x 2.0 | J 42385-108 | J 42385-105 | - | J 42385-106 | J 42385-107 | 69.0 (2.72) | 60.0 (2.36) |
| 10 | M11 x 2.0 | J 42385-108 | J 42385-105 | - | J 42385-106 | J 42385-107 | 69.0 (2.72) | 60.0 (2.36) |
| 11 | M16 x 1.5 | - | - | - | - | - | - | - |
| 12-17 | M10 x 1.5 | J 42385-215 | J 42385-211 | J 42385-212 | J 42385-213 | J 42385-214 | 29.0 (1.14) | 23.0 (0.905) |
| 18 | M28 x 1.25 | - | - | - | - | - | - | - |
| 19-20 | M8 x 1.25 | J 42385-210 | J 42385-206 | J 42385-207 | J 42385-208 | J 42385-209 | 21.0 (0.826) | 16.0 (0.629) |
| 21 | M16 x 1.5 | - | - | - | - | - | - | - |
| 22 | M10 x 1.5 | J 42385-215 | J 42385-211 | J 42385-212 | J 42385-213 | J 42385-214 | 27.0 (1.06) | 21.5 (0.846) |
| 23 | M11 x 2.0 | J 42385-108 | J 42385-105 | - | J 42385-106 | J 42385-107 | 69.0 (2.72) | 60.0 (2.36) |
| 24 | M11 x 2.0 | J 42385-108 | J 42385-105 | - | J 42385-106 | J 42385-107 | 69.0 (2.72) | 60.0 (2.36) |
| 25 | M8 x 1.25 | J 42385-210 | J 42385-206 | J 42385-207 | J 42385-208 | J 42385-209 | 26.5 (1.04) | 19.0 (0.784) |
| 26-27 | M11 x 2.0 | J 42385-108 | J 42385-105 | - | J 42385-106 | J 42385-107 | 69.0 (2.72) | 60.0 (2.36) |
| 28 | M6 x 1.0 | J 42385-205 | J 42385-201 | J 42385-202 | J 42385-203 | J 42385-204 | 22.5 (0.885) | 16.0 (0.629) |
| 29 | M8 x 1.25 | J 42385-210 | J 42385-206 | J 42385-207 | J 42385-208 | J 42385-209 | 26.5 (1.04) | 19.0 (0.784) |
| Bolt holes 2, 3, 6, 7, 9, 10, 23, 24, 26, and 27 have a 30 mm (1.18 in) counterbore included in the 69.0 mm (2.72 in) drill depth. Use sleeve J 42385-315 with the drill and tap. | ||||||||
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.