UNANTICIPATED HEAT IN THE TRANSMISSION CAN FORCE THE TRANSMISSION FLUID OUT OF THE VENT TUBE.
Consequence: THE VENTED TRANSMISSION FLUID CAN CATCH FIRE IF EXPOSEDTO A SOURCE OF IGNITION.
Remedy: INSTALL A LONGER TRANSMISSION VENT HOSE ROUTED TO THE LEFT SIDE OF THE ENGINE COMPARTMENT OF THE VEHICLE.
SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES · 90V108000
1990-06-04
LOOSE PIVOT BOLT HOLDING THE BRAKE PEDAL TO ITS SUPPORT BRACKET COULD DISENGAGE FROM THE NUT.
Consequence: THIS COULD CAUSE LOSS OF BRAKING ACTIVITY THAT COULDRESULT IN A TRUCK CRASH WITHOUT PRIOR WARNING.
Remedy: RETORQUE BRAKE PEDAL PIVOT BOLTS TO SPECIFICATIONS TO PREVENT LOOSENING.
FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS · 90V015000
1990-01-29
ON C AND K MODELS, FEED AND OR RETURN FUEL LINES CAN CONTACT THE AUTOMATIC TRANSMISSION SHIFT LINKAGE CORDON SHAFT. IN ADDITION, ON K MODELS LINES MAY ALSO CONTACT FRONT PROPSHAFT. IN EITHER CASE THE FUEL LINES COULD BE DAMAGED RESULTING IN A FUEL LEAK.
Consequence: A HOLE COULD BE RUBBED THROUGH THESE FUEL LINES, ALLOWING FUEL LEAKAGE NEAR EXHAUST CROSSOVER PIPE; THIS COULD RESULT IN AN ENGINE COMPARTMENT FIRE THAT COULD SPREAD TO THE PASSENGER COMPARTMENT.
Remedy: INSTALL NEWLY DESIGNED FUEL LINE ROUTING BRACKET TO PREVENT CONTACT AND, IF NECESSARY, REPLACE FUEL LINES.
Wiper blades
1988-1991 GMT400 generation K30. Standard hook attachment, no rear wiper on pickup body style.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 1990 Chevrolet K30 5.7L V8 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.