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Home >> Chevrolet >> 2006 >> Silverado 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 35 (Automatic Transmission - ALLISON - Service, Diagnosis & Troubleshooting) >> Intermittent Buzzing Noise

Intermittent Buzzing Noise

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Intermittent Buzzing Noise

Condition Action
Low fluid level Add fluid to the proper level. Refer to Transmission Fluid Checking Procedure .
Air leak in oil suction filter canister Replace the oil suction filter. Refer to Oil Pan Replacement .
Clogged suction filter Replace the filter. Refer to Oil Pan Replacement .
Aerated fluid causes noisy pump Correct the fluid level. Refer to Transmission Fluid Checking Procedure .
Low main pressure causes main regulator valve to oscillate Refer to Low Main Line Pressure in All Ranges  and Low Main Line Pressure in specific Ranges, Normal Pressure in Other Ranges .