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5. With the engine at idle speed and the transmission in PARK or NEUTRAL, observe the vibration. Refer to Noise and Vibration Analysis . Repeat this procedure until you obtain the best possible balance. 6. Install the transmission converter cover bolts and the cover. BUSHING AND MATING SHAFT INSPECTION Any of the following bushing conditions require replacement of the bushing and/or housing: Discoloration due to heat distress Misalignment or displacement of bushing as a result of spinning in housing Medium to heavy scoring that can be easily detected with fingernail. Light scoring is a Debris embedded into the bushing lining material Obvious damage, including excessive and uneven wear Excessive polishing. Minor polishing of the bushing is an indication of normal wear and Any of the following conditions require replacement of the bushing's mating shaft: Discoloration due to heat distress Rough surface finish that can be easily detected with finger Obvious shaft abnormalities, including warping or uneven surfaces Obvious damage or cracking VIBRATION IMPORTANT: Proper bushing and corresponding mating shaft inspection should be performed before replacing the bushing, shaft, and in Checks Causes Lug bolts for the Torque Inspect for loose torque converter (1) lug bolts.
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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