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1990 Gmc B6p042

Component

Fuel System, Gasoline:Delivery:Hoses, Lines/Piping, And Fittings

Consequence of Defect

fuel return hoses may break at either crimped coupling, causing a leakage of fuel.

Corrective Action

in the event of a fuel return line separation, a fuelleak occurring in the presence of an ignition source could cause a fire.

Recall Notes

install a properly crimped fuel return hose.

1989 Gmc B6p042

Component

Fuel System, Gasoline:Storage:Tank Assembly:Filler Pipe And Cap

Consequence of Defect

a crack may develop adjacent to the fuel tank seam weld attaching the tank end cap.

Corrective Action

this could result in a leak or dripping from the fueltank with potential fire hazzard.

Recall Notes

install limiter cushions on the tank support brackets or replace tank, if necessary.

1988 Gmc B6p042

Component

Service Brakes, Air:Supply:Hoses, Lines/Piping, And Fittings

Consequence of Defect

melting of the air brake lines can occur where the air lines route under the left hand frame rail near the exhaust pipe.

Corrective Action

this could result in partial or total loss of servicebrakes without warning, which could lead to a vehicle crash.

Recall Notes

reroute air line harness away from the exhaust system; replace harness if heat deterioration has occured.

1988 Gmc B6p042

Component

Fuel System, Gasoline:Storage:Tank Assembly:Filler Pipe And Cap

Consequence of Defect

a crack may develop adjacent to the fuel tank seam weld attaching the tank end cap.

Corrective Action

this could result in a leak or dripping from the fueltank with potential fire hazzard.

Recall Notes

install limiter cushions on the tank support brackets or replace tank, if necessary.

1987 Gmc B6p042

Component

Service Brakes, Air:Drum:Chamber

Consequence of Defect

severe brake chatter may cause the brake chamber mounting brackets on either side to develop cracks in the weld area where the s cam shaft tube attaches to the chamber support section.

Corrective Action

brackets can break, resulting in loss of braking abilityat that front wheel, and possibly restricted steering, which could lead to avehicle crash without prior warning.

Recall Notes

as necessary, install new reinforced front brake chamber mounting brackets and install a front brake limiting valve on vehicles without one.

1987 Gmc B6p042

Component

Service Brakes, Air:Supply:Hoses, Lines/Piping, And Fittings

Consequence of Defect

melting of the air brake lines can occur where the air lines route under the left hand frame rail near the exhaust pipe.

Corrective Action

this could result in partial or total loss of servicebrakes without warning, which could lead to a vehicle crash.

Recall Notes

reroute air line harness away from the exhaust system; replace harness if heat deterioration has occured.

1987 Gmc B6p042

Component

Fuel System, Gasoline:Storage:Tank Assembly:Filler Pipe And Cap

Consequence of Defect

a crack may develop adjacent to the fuel tank seam weld attaching the tank end cap.

Corrective Action

this could result in a leak or dripping from the fueltank with potential fire hazzard.

Recall Notes

install limiter cushions on the tank support brackets or replace tank, if necessary.

1986 Gmc B6p042

Component

Service Brakes, Hydraulic:Fluid

Consequence of Defect

severe brake chatter may cause the brake chamber mounting brackets on either side to develop cracks in the weld area where the s-cam shaft tube attaches to the chamber support section. consequence of defect: brackets can break, resulting in loss of braking ability at the front wheel, and possibly restrict steering, which could lead to a vehicle crash without prior warning.

Corrective Action

Recall Notes

as necessary, replace front brake chamber mounting brackets and install a front brake limiting valve.

1986 Gmc B6p042

Component

Service Brakes, Air:Drum:Chamber

Consequence of Defect

severe brake chatter may cause the brake chamber mounting brackets on either side to develop cracks in the weld area where the s cam shaft tube attaches to the chamber support section.

Corrective Action

brackets can break, resulting in loss of braking abilityat that front wheel, and possibly restricted steering, which could lead to avehicle crash without prior warning.

Recall Notes

as necessary, install new reinforced front brake chamber mounting brackets and install a front brake limiting valve on vehicles without one.

1986 Gmc B6p042

Component

Fuel System, Gasoline:Storage:Tank Assembly:Filler Pipe And Cap

Consequence of Defect

a crack may develop adjacent to the fuel tank seam weld attaching the tank end cap.

Corrective Action

this could result in a leak or dripping from the fueltank with potential fire hazzard.

Recall Notes

install limiter cushions on the tank support brackets or replace tank, if necessary.

1985 Gmc B6p042

Component

Service Brakes, Hydraulic:Fluid

Consequence of Defect

severe brake chatter may cause the brake chamber mounting brackets on either side to develop cracks in the weld area where the s-cam shaft tube attaches to the chamber support section. consequence of defect: brackets can break, resulting in loss of braking ability at the front wheel, and possibly restrict steering, which could lead to a vehicle crash without prior warning.

Corrective Action

Recall Notes

as necessary, replace front brake chamber mounting brackets and install a front brake limiting valve.

1985 Gmc B6p042

Component

Service Brakes, Air:Drum:Chamber

Consequence of Defect

severe brake chatter may cause the brake chamber mounting brackets on either side to develop cracks in the weld area where the s cam shaft tube attaches to the chamber support section.

Corrective Action

brackets can break, resulting in loss of braking abilityat that front wheel, and possibly restricted steering, which could lead to avehicle crash without prior warning.

Recall Notes

as necessary, install new reinforced front brake chamber mounting brackets and install a front brake limiting valve on vehicles without one.

1984 Gmc B6p042

Component

Service Brakes, Hydraulic:Fluid

Consequence of Defect

severe brake chatter may cause the brake chamber mounting brackets on either side to develop cracks in the weld area where the s-cam shaft tube attaches to the chamber support section. consequence of defect: brackets can break, resulting in loss of braking ability at the front wheel, and possibly restrict steering, which could lead to a vehicle crash without prior warning.

Corrective Action

Recall Notes

as necessary, replace front brake chamber mounting brackets and install a front brake limiting valve.

1984 Gmc B6p042

Component

Service Brakes, Air:Drum:Chamber

Consequence of Defect

severe brake chatter may cause the brake chamber mounting brackets on either side to develop cracks in the weld area where the s cam shaft tube attaches to the chamber support section.

Corrective Action

brackets can break, resulting in loss of braking abilityat that front wheel, and possibly restricted steering, which could lead to avehicle crash without prior warning.

Recall Notes

as necessary, install new reinforced front brake chamber mounting brackets and install a front brake limiting valve on vehicles without one.

1984 Gmc B6p042

Component

Service Brakes, Hydraulic:Power Assist:Hydraulic

Consequence of Defect

vehicles have a primary and a reserve braking system. if the primary brake system booster fails, under some circumstances the reserve system may also malfunction and braking ability will be impaired.

Corrective Action

Recall Notes

dealer will install a new reserve brake control module at no cost to owner.

1983 Gmc B6p042

Component

Service Brakes, Hydraulic:Fluid

Consequence of Defect

severe brake chatter may cause the brake chamber mounting brackets on either side to develop cracks in the weld area where the s-cam shaft tube attaches to the chamber support section. consequence of defect: brackets can break, resulting in loss of braking ability at the front wheel, and possibly restrict steering, which could lead to a vehicle crash without prior warning.

Corrective Action

Recall Notes

as necessary, replace front brake chamber mounting brackets and install a front brake limiting valve.

1983 Gmc B6p042

Component

Service Brakes, Air:Drum:Chamber

Consequence of Defect

severe brake chatter may cause the brake chamber mounting brackets on either side to develop cracks in the weld area where the s cam shaft tube attaches to the chamber support section.

Corrective Action

brackets can break, resulting in loss of braking abilityat that front wheel, and possibly restricted steering, which could lead to avehicle crash without prior warning.

Recall Notes

as necessary, install new reinforced front brake chamber mounting brackets and install a front brake limiting valve on vehicles without one.

1983 Gmc B6p042

Component

Service Brakes, Hydraulic:Power Assist:Hydraulic

Consequence of Defect

vehicles have a primary and a reserve braking system. if the primary brake system booster fails, under some circumstances the reserve system may also malfunction and braking ability will be impaired.

Corrective Action

Recall Notes

dealer will install a new reserve brake control module at no cost to owner.

1982 Gmc B6p042

Component

Service Brakes, Hydraulic:Power Assist:Hydraulic

Consequence of Defect

vehicles have a primary and a reserve braking system. if the primary brake system booster fails, under some circumstances the reserve system may also malfunction and braking ability will be impaired.

Corrective Action

Recall Notes

dealer will install a new reserve brake control module at no cost to owner.