April 1, 2002 Service bulletin

Some customers may comment on the service 4WD indicator illuminating with diagnostic trouble code B2725 set

Chevrolet technical service bulletin 020421004 for 1999-2002 Chevrolet Tahoe, 1999-2002 Chevrolet Silverado and 1999-2002 Chevrolet Suburban and others.

Bulletin number: 020421004
Component: Power train: transfer case (4-wheel drive)
Summary: Some customers may comment on the service 4wd indicator illuminating with diagnostic trouble code b2725 set. Tt

Owners of these vehicles have filed 736 complaints in the transmission category.

Vehicles covered

Chevrolet Tahoe 1999-2002 1999 2000 2001 2002
Chevrolet Silverado 1999-2002 1999 2000 2001 2002
Chevrolet Suburban 1999-2002 1999 2000 2001 2002
GMC Yukon 1999-2002 1999 2000 2001 2002
GMC Sierra 1999-2002 1999 2000 2001 2002
Chevrolet Avalanche 1999-2002 1999 2000 2001 2002

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