GMC Truck›P15›1978›Overview/gmc-truck/p15/1978/base/

1978 GMC Truck P15

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1978 P15.

Model year1978 1977

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

Catalyst system efficiency below threshold — Bank 1

Random / multiple cylinder misfire detected

System too lean — Bank 1

Evaporative emission system leak detected — large leak

Coolant thermostat below regulating temperature

Evaporative emission system leak detected — small leak

Decode factory build data for a specific vehicle by VIN.

VIN

Decode a VIN to confirm the transmission and build data for a specific P15. OEM

Build data

Plant, GVWR class, engine and body data for any 17-character VIN.

Recalls

Check open recall campaigns against a specific vehicle by VIN.

Cross-vehicle references for the kinds of data on this page.