K 2500 Truck 4WD V8-454 7.4L VIN J SFI (1997)
Engine Mount: Testing and Inspection
Rear Mount
CAUTION: Broken or deteriorated mounts can cause misalignment and destruction of certain drive train components. When a single mount breaks, the
remaining mounts are subjected to abnormally high stresses.
1. Push up and pull down on the transmission extension housing. Observe the transmission mount.
2. Replace the mounting if the following conditions exist:
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The rubber cushion is separated from the metal plate of the mounting.
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The mounting has bottomed out.
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The extension housing moves up but not down.
3. If a mount is loose, tighten the bolts or nuts that attach the mount to the transmission or to the crossmember.
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For the transmission mounts to transmission bolts, tighten the bolts to 47 Nm (35 ft. lbs.).
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For the transmission mount to support nuts, tighten the nuts to 47 Nm (35 ft. lbs.).
