2001 Chevrolet Silverado 1500 Q&A
2001 Chevrolet Silverado 1500 Question: CHECK ENGINE LIGHT IS ON
I HAVE 01 CHEVY PICKUP 1500 SILVERADO 2 WHEEL DRIVE 4.8L ENGINE. HAD CODES CHECKED AT PARTS STORE PO327&PO332 WHAT DO I HAVE TO DO TO REPAIR THIS PROBLEM. THEY SAID THEY WERE SENSORS.IF I REPLACE THEM WILL IT FIX MY PROBLEM?ALSO WERE ARE THEY LOCATED? THANKS FOR ANY HELP ON THIS. - Kezorm
Here is the test for p0332. 1. Disconnect the knock sensor pigtail harness on the back of the intake and check for 100K ohms resistance to ground on both sensors. 2. Switch the meter to AC volts and check for several tenths of a volt output from the knock sensor when disconnected and connected to the harness. 3. If the voltage stays the same, install a scan tool and check for any knock indications. 4. If the voltage output is reduced when connected, check for a wiring problem - Honest1autocare
...tion check valves may become restricted causing poor air flow resulting in illumination of the Check Engine Light. It is often recommend to replace both check valves even if a fault code is set for only one...
A Loose or worn gas cap may cause Check Engine Light to illuminate.