gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

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Fuel - Diagnosis for Surge Hot/Cold, Detonation, Code 32|Page 666 > < Fuel - Diagnosis for Surge Hot/Cold, Detonation, Code 32|Page 664

G 3500 1 Ton Van V8-454 7.4L (1989)

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View B

C.

Remove Map Sensor from upper plastic bracket (See Illustration, View B). CARE MUST BE TAKEN TO AVOID BREAKING
BRACKET.

D.

Remove sheet metal screw holding upper plastic bracket to lower metal bracket, and retain plastic bracket.

View C

Fuel - Diagnosis for Surge Hot/Cold, Detonation, Code 32|Page 666 > < Fuel - Diagnosis for Surge Hot/Cold, Detonation, Code 32|Page 664