Question about 2007 Chevrolet Impala LS Sedan New Cars
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Posted on Jan 02, 2017
The built in factory anti-theft system disables the fuel pump if it is triggered, or this can be caused by a fault in the anti-theft, those are a few of the reasons, arm and dis-arm anti-theft is it working properly? Follow this procedure to check security system:
The Security System is reset by unlocking the driver's door twice with the Ignition Key, but if it does not reset, most likely the Ignition Lock Cylinder has failed. It has small contacts which 'sense' the pellet on the key and transmits that data to the Anti-theft Module. Often the contacts, or the micro wires, break causing the module to think you have no key in there. The ASR may be illuminating since the Security System is active, trouble codes?
Posted on Aug 04, 2008
SOURCE: 1996 chevy tahoe fuel system
i am having the same problem with my 96 pickup i am getting low voltage to my fuel pump i have traced the wires back to the front the purpel wire is the one with low voltage i replaced fuel pump also fuel relay and still have low voltage
Posted on Jun 22, 2009
Did you check the ground wire on the frame. There is a ground wire that is bolted to the top frame rail near the left rear wheel opening. I've seen that wire break or get corroded where it bolts to the frame. I'm not sure of the location on a 1998 but that's where it is on the earlier models as well as the full size trucks. That wire also grounds the gas gauge, does the gas gauge read goofy? Also keep in mind the pump only runs for 3-5 seconds then it shut off, until the engine starts, or the starter is engaged. Good luck!
Posted on Dec 20, 2009
SOURCE: i was having problems with
I have worked on quite a few chevys and can tell you what I've found to work with this type of problem. When you replaced the starter, did you tug on the fusable links that connect to the solenoid to see if one of them was burned and loosing power? There are two or three short pieces of fusable link attached to wires that power the fuse block and other electrical circuits at the solenoid / battery cable connection that will stretch when you pull on them if they are bad. If they are, then you won't have power for the fuel pump, relays and other circuits to make the truck start.
If one is bad, cut the wire behind the link connection and put a **** splice and piece of wire on it with a ring terminal,and connect it to the solenoid. Turn on the ignition and listen for the fuel pump to buzz. The fuel pump is controled by the ECM and makes the pump turn on for 3 seconds to prime the system with fuel before starting the engine. One of the wires on the solenoid with a fusable link does this. If this works, your done.
If the truck won't crank when you try to start it, check the "S" terminal for power with a test light while someone turns the key. The "S" terminal on the solenoid comes from the ignition switch, to the neutral/backup / clutch switch to the starter. You'll have to check every point in between these for power to locate the problem. One bad connection or part will keep the starter from getting power to the "S" terminal. You can use a screw driver to test if the starter is working by touching the two terminals together.
While your under the truck, look at all the wires in the harness for any chafing or rubing, I once found a wire that rubbed through and was causing the problem.
Hope this helps, Craig
Posted on Dec 20, 2010
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