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August 1, 1999 Service bulletin

General motors has decided that some vehicles equipped with 4.8L or 5.3L engines and 4L60-E automatic...

Chevrolet technical service bulletin 99027 for 1999 Chevrolet Tahoe, 1999 Chevrolet Silverado and 1999 Chevrolet Suburban.

Bulletin number
99027
Component
Power train: automatic transmission
Summary
General motors has decided that some vehicles equipped with 4.8l or 5.3l engines and 4l60-e automatic transmissions, and vehicles equipped with 3.73 rear axles and ordered with the heavy-duty trailering package may not have included the merchandising-intent auxiliary transmission oil cooler. Tt

Owners of these vehicles have filed 190 complaints in the transmission category.

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