Hi Folks, Recent problem with troublie free 2002 Tahoe with 68k miles. When I turn the ignition key, the starter cranks, but will not turn over the engine. All dash indicator lights are on, just no engine running. This will happen 2-3 times (dash indicators on, starter cranks, no engine start). Then on the 3-4 try, the engine will catch and start up. The problem is getting worse (more frequent). Also, on a couple of times this has happened, the dash board indicator lights will go completely out, after the starter cranks (without the engine starting). But here is a clue. On some of the the times where the dash indicators go completely dark (after starter cranks with no engine start), the dash board clock resets to 1:00. Now, the only time I've seen a dash board clock reset is when you take out the battery. I replaced the battery, and everything else seems normal. All electical systems work with the engine running, or when using the battery. Please provide any diection you can.
Thanks very much! Kind Regards, Jim from Maryland.
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Re: 2002 Tahoe will not start
Check and recheck all conections on battery and starter and grounds on battery and the ground on engine bblock and body ground or grounds,if not sure make another one ,check connections at battery ,it does sound like a bad ground to body and eng just make ur owne and see what happens
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I would say it's bad contacts in the ignition switch. Metals change dimensions depending on temperature, looks like 45 degrees is the trick point for whatever is in there. My 04 Silverado 5.3 with 196,000 has the ticking, but it is gone within 10-15 seconds.
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
The ignition start circuit is the path from the ignition key in cranking mode to the solenoid on the starter. The path travels through a starter relay and a neutral safety switch before it reaches the starter.
This must be the circuit not working on your car.Make sure battery and starter connections are tight.Check for power at the starter solenoid terminal with a testlight when someone turns key to crank. If you have power there, they sold you a defective starter. If you have no power there then it could be the relay or the neutral safety switch.
A bad ignition switch can cause this problem, it is staying in the crank position even when released, I hope it didn't wreck your starter too. Have the reason for the check engine light checked out as well as the starter & charging system. May have burned up a fusible link because of the huge draw from the starter.
If you had battery unhooked and assuming that it is turning over try this
Put your key in turn it on dont start wait 10 mins remove key wait 10 seconds repeat this a total of 3 times. If that dont work try a different key do the same thing. This relearns your key to the ignition it started with Gm cars and trucks from 1999 to to 2006. It is a big problem but there is no recall that I know of. If that dont work a dealer needs to probably replace and reprogram your ignition switch and keys
shorting to start motor will allow the motor to turn but the ignition system is still off. try with key turned to ignition position. suspect starter solenoid on starter motor. suspect fuses maybe there is a fuse which has blown. suspect ignition key switch maybe defective.
Electrical problems are difficult to diagnose in person without testing ...however, it seems that you may be loosing the body ground, causing power loss to the clock and likely the computer as well. As the starter is able to turn the engine, likely there is no problem with engine grounding. While cranking, the accessory side of the ignition switch should remain "hot" otherwise you would loose the clock every time you started it up. If it's not a ground problem, I'd look at the ignition switch itself to make sure it's not dropping power to ignition system while starter is engaged. on some vehicles this can also happen at the starter relay if an ignition bypass is used to provide hotter starting spark.