Question about 1998 Chevrolet Tahoe

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Ignition my tahoe will not turn off with the key. the engine runs but all of the power to my gauges and radio are off. i checked power to my switch, and i have two wires that are hot constant.

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Sounds like a bad ignition switch or bad starter relay contact. (Stuck closed.)...accordianman

Posted on Dec 17, 2008


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1 Answer

Bad ignition switch?

Sounds like a problem in the ignition switch. When the gauges do not come on, how about the warning lights and the check engine light? If they don't turn on also, it may be a problem between the switch and the portion of the instrument panel fuse block that the switch sends power to in run or start-and then on to the dash for the gauges and warning lights.
You could check for power on the gauges fuse with key on. With the key in on position, all fuses in the instrument panel should have power to them. Check the fuses for power when the gauges do not come on. If no power in run, either the switch is bad, or however the switch sends power to those fuses (the ones called "hot in run or start") is not working. On some, the ignition switch's run wire trips a relay which sends power to the fuse panel. You would have to see a wiring diagram to see your set up. But it sounds like the problem is the switch or the wiring after it, not an engine sensor problem.

To check if a fuse has power, use a test light. Find a good ground for the test light under the dash, turn key to on, and use the needle probe of tester to probe the little indents on each end of the top of the fuse-these are test ports to check for power. A good fuse will light the tester on both ends of the fuse. A bad fuse (blown) will only light the tester on one end of the fuse-the metal strip inside the fuse has blown. Just check if all your fuses have power on them with the key on. Check them when the gauges don't work. IF no power, switch is bad or it is not turning that portion of the fuse panel on for some reason.

Apr 10, 2014 | Jeep Grand Cherokee Cars & Trucks

4 Answers

No power to gauges when key is turned


check the battery. if battery fails the engine won't start..

thank you

Oct 09, 2008 | 1997 Oldsmobile Bravada

1 Answer

I have a 2000 chevy malibu drove it for a few days then the other day went to start it turned the key no dash lights like the battery or any of the others that usually come on the mileage dont come on...

Did you check all the fuses under the hood? That's where the ignition fuses would be. The same "run" wire to the ignition coils, when the key is in on or run, or the same set of run wires out of the ignition switch both to the dash warning lights and gauges, and to the ignition system on the engine, well they're all the same power source, and more so the computer gets power from the ignition switch being on as exhibited by the check engine light turning on when key is turned to on.
It sounds like the ignition switch is either not getting full power in, or it's not sending power out as it should.
Check your other battery power-do you have headlights? That would be entirely separate from the ignition switch, but it verifies that battery power is getting to the fuse and relay block under the hood. Is the cranking speed normal? not too slow?

Mar 04, 2014 | Chevrolet Malibu Cars & Trucks

1 Answer

2002 Toyota Camry. Won't shift out of park, none of the gauges work nor does the radio or heater or turn signals

Sounds like you have an issue with your ignition switch. If nothing is working with the engine running, and key on, then all of those accessories are not getting power. I would start there. Good luck

Nov 09, 2013 | Cars & Trucks

3 Answers

Turn the key and nothing

Check battery cable connections. There should be a hot wire (hot at all times) to the ignition switch, and when key is turned the switch sends power out. Either the switch has lost the power in, or the switch is bad, not sending power out.
Do the headlights work? When key is turned to on, do the warning lights and gauges come on in the dash? Does the radio or any accessories work when key is turned? If nothing works, you need to check if the ignition switch is getting power from the battery.

Aug 13, 2013 | Cars & Trucks

1 Answer

2004 olds alero 3400 eng.turn on key and all warning lights and gauges come up,then all goes off after 3 seconds,starter will not work,can start by jumping across starter and runs fine and shifts fine

Check for power at the switch wire when someone turns the key to start. I would say there is a break in the circuit of the thin wire between the starter & the ignition switch

Oct 03, 2012 | 2004 Oldsmobile Alero

2 Answers

I got a 1999 chevrolet tahoe. when i put the key in the ignition the head lights,and the dash light comes on but it won't even turn. i change the starter and got a new battery and it still won'

well if you have a dvom/voltmeter check the power at the starter terminals. the main terminal should have power all the time the key wire should have power only when the key is turned to crank engine. if you have power at both then i would start looking at grounds

Mar 30, 2012 | 1999 Chevrolet Tahoe

2 Answers

95 GMC ignition system doesn't power

Sounds like an alternator problem. Pull it of the truck and take it to a parts store and have them test it for u. Its free at most parts stores. while your at it replace all power cabels and grounds the trucks old new cabels and connections cant hurt. Side post batteries have a bad habit of ratiling lose connections. hope this helps and good luck.

Aug 15, 2009 | 1995 GMC Sierra

1 Answer

Iginition system does not get power

did you check all the fusable links sometimes they dont break all the way maybee check all the grounds on the truck there is one on the back of the head and should be a comp. ground and of course the engine ground from bat. sometimes you have to losen them and retighten to establish a new clean ground

Aug 15, 2009 | 1995 GMC Sierra

1 Answer

While driving gauges drop and radio loses power

It sounds like you have a bad ground. check ground going to body from battery and also check the dash area for ground.
Possible ignition switch on steering column is melting/overheating.
(Switch is plastic with metal tabs. If they heat up too much, plastic melts and there is no contact.)

Aug 03, 2009 | 2003 Chevrolet Tahoe

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