Question about 2008 Chevrolet Silverado 1500 2WD
When people change motors it is a common problem to forget that each engine requires it's own wiring harness for it to use all the relevant sensors. It is not always possible just to put the plugs together and expect everything to work ok as different pins do different things . LIke do not supply power to fuel pumps.
Posted on Jan 01, 2014
We do not have wiring diagrams here at fixya. Sorry.
Posted on Jan 01, 2014
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Posted on Jan 02, 2017
If you are sure the fuel pump relay is working, check continuity from the pump to the relay socket. These wires love to corrode. When you turn your ignition on, the fuel pump will only run for a couple seconds before it shuts off via the automatic shutdown relay. Make sure you are checking power within this window. The PCM (powertrain control module) is what completes the ground in order for the relay to send power to the pump. If the PCM does not recieve a signal from several sensors (mainly the Crank Sensor) it will not turn on the pump. You may want to check these sensors, is the check engine light on? You can scan it to see if any sensors have thrown a code. Be sure all applicable fuses are ok, the PCM may have its own fuse, check that even if the fuel pump fuse is ok. Your Truck may also have an inertia switch for the fuel pump which shuts it off during an accident. Check that as well.
Posted on Mar 20, 2009
The Best diagram you can get is at alldatadiy.com it has the sections and locations and color of wires with pictures.
Posted on Aug 20, 2009
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