Our 99 Pontiac Montana will not start at all now. At first my husband thaught the fuel pump went out. and in the process of trying to get it home the starter went out of it. he replaced the starter pressed a relay or reset on the fuel pump. It then started just fine.but would shut off randomly.and sound as if it needed a battery so we replaced it .the pass key light flashed right before it would shut off.so We tried turning the key forward 2 clicks waiting 10 mins. and restarting.It didn't work..and now it will not start at all. .HELP PLEASE

Amazing.....At this very moment in time.....my 2000 silhouette is doing the same thing....if you were unaware.....ventures Montana's and silhouette are from the same mold. Very similar in all aspects. My diagnostics have got to the fuel pump part of suspects....but I have already checked filter, relays, fuses and ignition electronics....my latest suspect is the pressure sensor that monitors the pressure of the gas tank....there is also a pressure sensor on the injector rail I'm suspicious of. I'm going to find out how to place each sensor in "okay ....fuel pump turn on and pump fuel to the throttle body" to check them. In my case....I don't smell any gas after turning the engine over....trying to start it.....sometimes for over an hour....never any gas smell....so I suspect fuel delivery is the problem. The fuel pump has several sensors that control whether or not it needs to run....and pump gas. I can hear my fuel pump run for 2 or3 seconds when I turn the ignition to the on or start positions.testing all of those sensors is my plan of action for this 3 day weekend. Your on track with your work and suspicion of the position sensors......vacuum leaks will follow the sensor checks. Vacuum leaks could cause a couple of sensors to fail too.....I dropped my fuel tank last weekend....and found the fuel pump to be in working condition.....I removed my fuel filter and punched a hole through it for free flow.....to eliminate it from the list...after checking the vacuum angle....I will move to the electronics side.....with the ignition switch first and the transmission position indicator switch following.....I've plugged my trouble code reader in and didn't get any indication of any failed electronic devices......my problem and your problem seem to be very similar, except that I am doing all of my work on the van myself. I will try to keep you informed of my diagnostics through fix it.it would be nice to know how yours is advancing too.....there are a few directions you can progress into.....hope one solves your problem....if not.....there will be more ideas to come....until I solve my problem....good luck to. Us both and onward we go......Nick.ps couldn't spell or grammar check because I'm using my phone to compose....and the typing pad covers the entirescript being typed. Sorry for any problems. Associated

There is no reset switch. Check the wires that connect to the fuel pump. Most likely your wires are not making contact

fuel pump went out just like mines

Fuel filter,air filter,could be fuel pump,

Hi Mrs. C
the starter is NOT the problem the starter only cranks the engine has nothing to do once its running
it could need a TUNE UP depending on the mileage
If this was my vehicle i would replace the fuel filter and check the fuel pressure before you spend money on replacing the fuel pump
and FLUSH the FUEL INJECTORS
hope this helps

First thing is to replace the fuel filter. Now use starter fluid sprayed into the intake to get it started.

It needs a tank meter I'ts in the fuel tank

TRY TURNING THE KEY ON AND OFF WHILE LISTENING TO THE HUM OF THE FUEL PUMP. THIS WILL CYCLE THE FUEL PUMP ON TO PRESSURIZE THE FUEL LINES. IF YOU DON'T HEAR THE FUEL PUMP KICKING ON THEM CHECK THE FUSE FOR IT, UNDER THE HOOD. HOPE THIS HELPS WITH YOUR DILEMMA. LET ME KNOW. BEST OF LUCK

can you jumper the relay or find the red wire by the battery that is nit connected it will have a green connector jump it to positive and see if pump comes on

you need a replacement fuel tank sending unit, the resistor part of the unit is faulty.. good luck!