Question about 2003 Chevrolet Silverado 1500
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Posted on Jan 02, 2017
Check your o2 sensor voltage, those trucks are real bad for o2 sensors, and yes if one sensor is reading 0mv, the others will start to drop out, and the vehicle will run very, rough. You also may check fuel system pressure, should be almost 60p.s.i. If its alot lower, Id be looking into a fuel pump. If that vehicle is drive-by-wire (no throttle cable), the throttle bodies get very dirty and cause that concern also. Id start by having the vehicle scantested.
Posted on Feb 07, 2009
You will need to have a scanner connected to the car's computer diagnostics to get the exact error and determine the part of the engine where the problem may be located.
Posted on Oct 01, 2009
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