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GMC
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1989
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Forward Control 4.8 T, Standard
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Repair and Diagnosis
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Engine Performance
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Adjustment
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Tune-Up - 6-CYL
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Adjustments
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Ignition System
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Notes
Ignition System: Notes
SPARK PLUG TYPE
Application
AC No.
4.8L
R44T
SPARK PLUG SPECIFICATIONS
Gap: In (mm)
Torque: Ft. Lbs. (N.m)
0.035 (0.90)
17-27 (23-37)