SOURCE: 2001 chevy silverado 2500 hd, 6.0, replaced fuel
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.
SOURCE: 2004 Chevy Silverado HD 2500
On many engines with distributor less ignition systems and sequential fuel injection, a camshaft position sensor is used to keep the engine's control module informed about the relative position of the crankshaft. By monitoring cam position (which allows the control module to determine when the intake and exhaust valves are opening and closing), the control module can use the cam position sensor's input along with that from the crankshaft position sensor to determine which cylinder in the engine's firing sequence is approaching top dead center. This information is then used by the engine control module to synchronize the pulsing of sequential fuel injectors so they match the firing order of the engine. On some applications, input from the camshaft position sensor is also required for ignition timing.
The camshaft position sensor may be magnetic or Hall effect, and mounted on the timing cover over the camshaft gear, on the end of the cylinder head in an overhead cam application, or in a special housing that replaces the distributor (in the case of some of the GM applications). Operation and diagnosis is essentially the same as that for a crankshaft position sensor.
Re check the wire harness and the sensor installation to the camshaft sensor in Bank #1 which is where the #1 cylinder is. Good luck and hope this adds some light to you question, keep me posted and be glad to help.
SOURCE: how do I replace the transmission coolant lines
Take a small 90 degree pick. Inspect the fitting closely. Use the pick to "roll" the retaining clip off the fitting. The line will simply pull once this is done. U can install the clip first on reinstallation (inspect them closely) and then simply push the line into the fitting. It will "click" into place. Note u will have to orient the line perfectly to push in.
SOURCE: Drain Engine Coolant in 2005 Chevy Silverado 2500 HD
there is a petcock at the bottom of the rad drain ti from there and use a antifreeze tester to check protection temp
SOURCE: 2006 chevy silverado 2500 4wd a/c fan will not
look under the dash on the passenger side and you will see the blower motor, unplug the electrical connector and inspect it take special notice of the third pin from the left. they seem to have a common problem in that it melts the feed wire to the blower motor, a replacement plug kit can be found at most autoparts stores.
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