NHTSA Campaign Id 99V193000; Date: Jul. 19, 1999
If this occurred at a time when minimum stopping distance was required, a vehicle crash could occur without prior warning.
1991 Chevrolet Blazer; 1992 Chevrolet Blazer; 1993 Chevrolet Blazer; 1994 Chevrolet Blazer; 1995 Chevrolet Blazer; 1996 Chevrolet Blazer; 1991 Chevrolet S10; 1992 Chevrolet S10; 1993 Chevrolet S10; 1994 Chevrolet S10; 1995 Chevrolet S10; 1996 Chevrolet S10; 1991 GMC Jimmy; 1992 GMC Jimmy; 1993 GMC Jimmy; 1994 GMC Jimmy; 1995 GMC Jimmy; 1996 GMC Jimmy; 1991 GMC Sonoma; 1992 GMC Sonoma; 1993 GMC Sonoma; 1994 GMC Sonoma; 1995 GMC Sonoma; 1996 GMC Sonoma
Component: Service Brakes, Hydraulic:antilock
Manufactured by: General Motors Corp.
Affected Units:: 1,125,749
Vehicle description: certain 4-wheel drive pickup trucks and sport utility vehicles equipped with abs (antilock braking system) manufactured from September 1989 through August 1996. Under certain driving conditions the switch which signals the abs system whether the vehicle is in 2-wheel or 4-wheel drive can malfunction causing increased stopping distances during abs stops while in the two-wheel drive mode.
Dealers will replace or repair the 4-wheel/2-wheel drive switch.
The first phase of owner notification letters began may 31, 2000,with the last mailing completed by October 2000. Owners can contact Chevrolet at 1-800-222-1020 or GMC at 1-800-462-8782. Also contact the national highway traffic safety administration's auto safety hotline at 1-888-dash-2-dot (1-888-327-4236).
Date Owners notified by Manufacturer: May 31, 2000
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