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1998 GMC K2500 Sierra SL 5.7L Spark Knock
Posted to GM Driveability on 10/19/2004 18 Replies

customer has had truck at another shop--everything they tested-tested good--so they started guessing. we got into this by saying we would look at it. fuel pressure is good, o2's switching normally-knock sensor retards timing, but when under a load( truck has a...

18 Replies Received (View Replies)

  Related Documents & Media  1998 GMC K2500 Sierra SL

 
Message Closed w/FIX

car Vehicle Data

1998 GMC K2500 Sierra SL

VIN 1GTGK24RXW
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsSpark Knock
OccursHot, Under Load
Message Closed w/FIX

car Vehicle Data

1998 GMC K2500 Sierra SL

VIN 1GTGK24RXW
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsSpark Knock
OccursHot, Under Load