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.
GMC Motor Home
Raise and support vehicle under lower control arms. Clamp self-locking pliers on hub at axle drive nut, so that pliers are in a horizontal position. Using a suitable stand, mount dial indicator so that contact tip of indicator points downward and rests against pliers. Place pry bar between lower control arm and drive axle outer race, and pull down on bar. If dial indicator reading exceeds 0.125", replace ball joint.
NO RELATED
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:
- • 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.