× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
1998 GMC K1500 Sierra SL, ECM/Inputs/Outputs Waveform
Posted to the Waveform Library on 2/1/2014

Notice in red when inj one orange wave , the current initial draw is over 6 amps and after that large draw, the pcm doesn't open any injectors for some time after.

 

car Vehicle Data

1998 GMC K1500 Sierra SL 5.0L

Engine5.0 L / 8 cyl / GAS
Trans5-speed StandardTransmission
DeliveryFuel Injection
SubsystemECM/Inputs/Outputs
Component
ConditionKnown Bad

car Vehicle Data

1998 GMC K1500 Sierra SL 5.0L

Engine5.0 L / 8 cyl / GAS
Trans5-speed StandardTransmission
DeliveryFuel Injection
SubsystemECM/Inputs/Outputs
Component
ConditionKnown Bad