suspension

Upper Control Arm - Front Torque Specs

for 2015 GMC Sierra 3500HD 6.6L V8 Duramax Diesel · 4WD

Units

7 fasteners

Seq

Component

Torque

Angle

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Ball Joint Nut

Critical

Tighten to 37 lb-ft then loosen 180°. Tighten to 37 lb-ft + 90-100 degrees (verify year).

37 lb-ft · 50 Nm

90°

—

Control Arm Bolts

Critical

Torque with weight on wheels

128 lb-ft · 174 Nm

—

Control Arm-to-Frame Nuts

Critical

⚠️ TORQUE AT RIDE HEIGHT (Weight on wheels) to prevent bushing failure.

90 lb-ft · 122 Nm

—

Mounting Bolts

20 lb-ft · 27 Nm

—

Strut Bolts

Critical

115 lb-ft · 156 Nm

—

Sway Bar Link

Critical

61 lb-ft · 83 Nm

—

Wheel Lug Nuts

Critical

Torque in star pattern

135 lb-ft · 183 Nm

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