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Home >> Buick >> 1993 >> LeSabre Custom >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 3.8L >> ECM/Pcm Code Charts >> Code 68 - Cruise System Problem (Using Tech 1) (3.8L) >> Diagnostic Aids

Diagnostic Aids

Outside interference such as CB antenna lead near PCM wiring harness may cause false servo position sensor signal and set Code 68.

Fig 1: Code 68 Schematic Using Tech 1 (3.8L "C" & "H" Bodies) Cruise System Problem
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Fig 2: Code 68 Schematic Using Tech 1 (3.8L "E" Body) Cruise System Problem
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Fig 3: Code 68 Schematic Using Tech 1 (3.8L "W" Body) Cruise System Problem
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Fig 4: Code 68 Flow Chart Using Tech 1 (3.8L) Cruise System Problem
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