1999 GMC W4 TSBs (9)

Bulletin:
98048
Component:
073000 fuel system, gasoline:fuel injection system
Summary:
Vehicles exhibit a condition in which the injection pump gear may contain a maching burr on the gear surface. *yc
Bulletin:
99066B
Component:
061100 engine and engine cooling:engine:gasoline
Summary:
Some owners may experience a service engine soon light, misfire, rough idle or hard start. **mr
Bulletin:
98048
Component:
061000 engine and engine cooling:engine
Summary:
Customer satisfaction campaign involving fuel injection pump timing gear fracture. *tt
Bulletin:
00148
Component:
980000 unknown or other
Summary:
Service engine soon light, misfire, rough idle, or hard start due to a deposit build-up on the sequential central port fuel injector (scpi) poppet valve(s). the deposit build-up may cause injector poppets to stick closed. *tt
Bulletin:
99066C
Component:
185000 vehicle speed control:cruise control
Summary:
Some owners of 1996 - 1998 model year s/t, m/l, c/k, g, p and w4 trucks, that are registered in california, equipped with 4.3l, 5.0l or 5.7l engine, and california emissions, may experience a service engine soon light, misfire, rough idle o
Bulletin:
99066C
Component:
185000 vehicle speed control:cruise control
Summary:
Some owners of 1996 - 1999 s/t, m/l, c/k, g, p and w4 trucks may experience a service engine soon light, misfire, rough idle or hard start due to a deposit build-up on the sequential central port fuel injector (scpi) poppet valve(s).
Bulletin:
99066C
Component:
073200 fuel system, gasoline:fuel injection system:injectors
Summary:
Some vehicles may experience a service engine soon light, misfire, rough idle or hard start due to a deposit build-up on the sequential central port fuel injector (scpi) poppet valve(s). *tt
Bulletin:
99066D
Component:
061100 engine and engine cooling:engine:gasoline
Summary:
Some owners may experience a service engine soon light, misfire, rough idle orhard start due to a deposit build-up on the sequential central port fuel inujector (scpi) poppet valve(s). *tt
Bulletin:
16NA260
Component:
353400 equipment:electrical:radio/tape deck/cd etc.
Summary:
This technical bulletin provides a procedure to reprogram the media disc player with the latest calibrations to correct a condition of the rear entertainment system not operating as intended in colder ambient temperature areas due to calibr

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