1991 GMC K SERIES TSBs (8)

Bulletin:
467401
Component:
105000 power train:driveline
Summary:
transfer case hops out of 4-low. *tw
Bulletin:
667406
Component:
102000 power train:manual transmission
Summary:
Transfer case hops out of 4-high, or no drive in 2 or 4-high ranges and/or grinding noise (install mainshaft/range hub kit) *tw
Bulletin:
764301
Component:
100000 power train
Summary:
Slow or no engagement of front axle when 4 wd is selected (replace front axle actuator). *tw
Bulletin:
98764301
Component:
106000 power train:axle assembly
Summary:
Concerns that the colder the outside temperature is, the longer it takes for the front axle to engage when 4 wheel drive is selected, or the front axle does not engage. *yc
Bulletin:
767402
Component:
103000 power train:automatic transmission
Summary:
Complaints that four wheel drive does not engage after installation of the updated four wheel drive fast actuator. *yc
Bulletin:
000604002
Component:
061100 engine and engine cooling:engine:gasoline
Summary:
Subject regarding a hard, no start or excessive gray or white smoke condition on start up after recent glow plug replacement. *tt
Bulletin:
990940004
Component:
220000 seats
Summary:
General motors began providing child restrain seat top tether hardware packages to customers in the united states who requested them. *tt
Bulletin:
000601019
Component:
061100 engine and engine cooling:engine:gasoline
Summary:
Some owners may comment on high oil consumption after a gm goodwrench remanufactured 4.3l v6 engine is installed. *tt

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