1986 Chevrolet C10 Service and Repair Manual
This factory service and repair manual for the 1986 Chevrolet C10 is a one-body book with a four-engine spine. Every truck in it is a two-door standard cab pickup wearing Custom, Scottsdale or Silverado trim, and what a buyer chose was mostly the engine: a 4.3L V6 of 262 cubic inches, a 5.0L or 5.7L gasoline V8 of 305 or 350 cubic inches, or the 6.2L diesel V8 of 379 cubic inches, none of them turbocharged. Each carries its own tune-up specifications, clearances and torque values, and the diagnostic charts branch accordingly.
Engines covered
- 5.0L V8 (305 cu in) — OHV, naturally aspirated, gasoline
- 6.2L V8 (379 cu in) — OHV, naturally aspirated, diesel
- 4.3L V6 (262 cu in) — OHV, naturally aspirated, gasoline
- 5.7L V8 (350 cu in) — OHV, naturally aspirated, gasoline
Body styles covered
- 2-door standard cab pickup
Trims covered
- Custom
- Scottsdale
- Silverado
Known issues on the 1986 C10. The federal record carries two recalls. Rear brake assemblies of an improper size were installed on some trucks, leaving stopping distances longer than the standard permits; separately, a replacement oil filter can seal inadequately and lose engine oil, which the notice ties to a fire risk. Owners have logged eight complaints, five on the fuel system, two on the power train and one on seat belts. Fuel delivery testing, transmission and driveline procedures and the restraint anchorage torque values are among the specifications this manual sets out.
IMPROPER SIZE REAR BRAKE ASSEMBLIES WERE INSTALLED.
TRUCKS COULD EXCEED THE MAXIMUM STOPPING DISTANCEPERMITTED BY FMVSS 105, HYDRAULIC BRAKE S
REPLACE REAR AXLE BRAKE ASSEMBLIES WITH PROPER SIZE ASSEMBLIES.
MY 1986 CHEVY 1/2 TON PU TRUCK CAUGHT FIRE WHILE TRAVELLING DOWN THE INTERSTATE AT 65 MPH WITH ME AND MY 71 YEAR OLD FATHER IN IT. I AM CONVINCED THE PROBLEM WAS CAUSED BY THE TRAN
PLASTIC COVER ON FUEL TANK ALLOWED SAND TO COLECT CAUSING RUST THRU OF FUEL TANK AND FUEL LEAKAGE
STEEL FUEL FILTER ADAPTER THREADS STRIPED CARB BODY CAUSING FUEL LEAK ONTO ENGINE
SPEEDOMETER FAILED, A MUCH LOWER MILEAGE WAS INDICATED THAN VEHICLE ACTUALLY TRAVELED. *AK
Showing the 4 most serious of 8 complaints filed with NHTSA.
