Questions & Answers for: Chevrolet Silverado 1500 high emissions

...Emissions System (EVAP) allows fumes from the gas tank to enter the engine to be burned, rather than vented into the atmosphere as an emission. The purge valve solenoid is supplied switched battery ...

...up to it and got 4 codes. 1/4 random / multiple cylinder misfire detected 2/4 02 sensor circuit High Voltage (bank 2 sensor 2) 3/4 Emission control System Leak detected 4/4 H0251 Insufficient ...

Very high idle at start, slowly idles down after hot. Replaced ICV, sometimes lopes, can shut down, restart, idles right. change fuel filter. add can of SEAFOAM(parts store) to 1/2 tank of PREMIUM gas

...laymans terms. That is why it is in your manual. You ,need to get up to speed ,on todays somewhat high tech vehicles. Now you need to go to a shop that does EVAP testing, with a smoke machine,if ...

...emissions need help getting it off. Truck runs fine Diagnostic trouble code P1870 (Transmission Component Slippage) is a General Motors-specific code whose set parameters are determined by ...

...P0452 Evaporative Emission Control System Pressure Sensor Low Input P0463 Fuel Level Sensor Circuit High Input P0141 02 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2) P0161 02 Sensor Heater ...

...emissions.You need a scan tool and a smoke machine to test for evap.leaks.Usually the vent solenoid.This in the area of the spare tire.This is the most common problem that I have seen on the ...

95 chevy astro van won't pass high emissions nox at low speed If its higher mileage check the EGR valve. Famous for being clogged on those engines. Assuming it has emission friendly exhaust.

...emissions. The EVAP system contains a pressure sensor to check the integrity of the system. Periodically, the EVAP system performs a pressure test to check that there are no leaks in the system. It ...

...emissions and they said throttle position sensor i replaced & cleared codes engine light came back on.. had ran codes again it says { po121 throttle/pedal position sensor/ switch a circuit range/ ...