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.
2008 Pontiac Solstice L4-2.4LFACTORY OEM SERVICE PROCEDURE
Rear Subframe: Service and Repair
Rear Suspension Support Crossmember Replacement
Removal Procedure
1.Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
2.Remove the rear differential. Refer to the appropriate procedure:
- Differential Replacement for the 5L40-E/5L50-E automatic transmission
- Propeller Shaft Replacement and Driveline Support Replacement for the Aisin AR5 manual transmission
3.Remove the rear lower control arms. Refer to Lower Control Arm Replacement .
4.Remove the rear suspension lower control arm reinforcement bolts (1).
5.Remove the rear suspension lower control arm reinforcement (2).
1.Remove the rear crossmember mounting bolts (1).
2.Remove the rear crossmember (2).
Installation Procedure
1.Install the rear crossmember (2).
Notice:Refer to Fastener Notice .
2.Install the rear crossmember mounting bolts (1).
TightenTighten all the support bolts to 100 N οΏ½m (74 lb ft).
1.Install the rear suspension lower control arm reinforcement (2).
2.Install the rear suspension lower control arm reinforcement bolts (1).
TightenTighten the bolts to 22 N οΏ½m (16 lb ft).
3.Install the rear lower control arms. Refer to Lower Control Arm Replacement .
4.Install the rear differential. Refer to the appropriate procedure:
- Differential Replacement for the 5L40-E/5L50-E automatic transmission
- Propeller Shaft Replacement and Driveline Support Replacement for the Aisin AR5 manual transmission
5.Lower the vehicle.
6.Inspect for rear wheel alignment and adjust as necessary. Refer to Wheel Alignment Measurement .
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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