Disconnected the battery, told old unit off (core trade-in). two days later (today) put rebuilt unit on, connected the battery, turned the key, lights on, radio on, alarm on, no engine.
SOURCE: My 2002 GMC Envoy wont start. I have had it on
try car to car boost-battery charger may not be working correctly or set on low amp charge -interior lights and dash may all light but battery may not be strong enough to energize starter have battery tested if battery good than check for power to the starter if power-- starter may be shot can remove also and have tested at most auto stores free if no power battery -wiring-or connection issue would need to test fuse panel-ignition switch and starter solenoid
SOURCE: 97 gmc pickup, 5.7 eng, fuel pump not operating,
What you need to do is check you fuel pressure. Go to a local auto parts store and buy a fuel injection pressure tester. The pressure fitting is on the top of the motor its a 3/8 ish sized metal line and has a screw on fitting like a tire valve does. This line comes up from the back of the motor to the right of the distributor and goes down into the intake. Make sure to have a rag handy to catch the fuel seepage. After you connect the pressure tester turn the key on and off three times and read the gage you should have atleast 58 pounds of pressure. If you have 56 pounds it won't run because the fuel injectors are a poppit valve style and need atleast 58 pounds of pressure to operate.
SOURCE: engine wont start,,battery works...starter works...not sure if its fuel pump or what the problem is
It might not have enough fuel pressure. Try spraying carb cleaner into the throttle body when you crank it to see if it fires.
SOURCE: 2002 GMC Envoy, i put the key in ignition and
Ignition switch and neutral safety switch. Next time it happens wiggle thekeys in the ignition switch and try to restart.If it starts its probably the ignition switch. Then locate neutral safety switch on brake pedal and put meter on B+ wire from switch to starter relay and see if you get B+ on the would -be- crank. Next locate B+ wire from starter relay to starter hook a meter to it and see if you get B+ on the would -be crank.
Where ever B+ is missing is your problem.
SOURCE: 2003 gmc envoy 4x4 not working
My 2005 Envoy 4WD is not working. Switc is currently on 2HI, but light is showing AWD. What is the problem???
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