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1989 GMC K3500 Sierra 7.4L No Power
Posted to GM Driveability on 9/24/2010 16 Replies

This truck came in with a no strat, no spark. replaced the dist and would fire, but had a vacuum leak on intake manifold and fuel pressure was too low. replaced gaskets and pump and now it idles pretty smooth, but when driving under load truck has now power an...

16 Replies Received (View Replies)

  Related Documents & Media  1989 GMC K3500 Sierra

 
Message Closed w/FIX

car Vehicle Data

1989 GMC K3500 Sierra

VIN 2GTHK39N9L
Engine7.4 L / 8 cyl / GAS
Trans3-speed Automatic
DeliveryFuel Injection / tbi
SymptomsNo Power
OccursUnder Load
Message Closed w/FIX

car Vehicle Data

1989 GMC K3500 Sierra

VIN 2GTHK39N9L
Engine7.4 L / 8 cyl / GAS
Trans3-speed Automatic
DeliveryFuel Injection / tbi
SymptomsNo Power
OccursUnder Load