Question about 1991 Chevrolet C1500

2 Answers

How can depressing the clutch engage the starter ?

The truck starts with the clutch, when the ignition is on. When you push the clutch in, the starter engages... but sounds horrible and grinds, like it's dragging. The starter is a good one & less than a year old. I changed the Clutch Safety Switch and the ignition switch on the column. Same thing, the starter engages as soon as the clutch safety switch is depressed, when the key is on.

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  • manuelrodriguez
    manuelrodriguez Apr 17, 2015

    I have right at 5 decades of being a mechanic not a parts changer but a real mechanic and I just witness my friends 1999 s10 start with key on and just pressing on clutch, it also engages each time we press the clutch after it has started up. I haven't got the time to check it out today, but my thought is as someone mention already that somewhere in the starter and safety system a wire has frayed or melted to another. I moved the wiring around under dash to see if it my be rubbing on clutch pedal itself. The things is if it were that sort of problem chevy would have to have broken the ground instead of feed wire to activated safety switch and that would be weird. If I get the chance to work on this problem I will be glad to post what I find, with a schematic it should not be to hard to find the problem.

  • manuelrodriguez
    manuelrodriguez Apr 17, 2015

    But if anyone has run across this problem and knows the solution I would be grateful to know what you found and possibly save me some time.

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2 Answers

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  • Chevrolet Master
  • 5,252 Answers

It sounds like current is feeding into the start wire off the switch. Trace the wire from the clutch switch to the ignition switch connector. Does the wire look good? Examine closely the connector and see if you see a burnt terminal, or some broken plastic in the connector, some way for the start wire to pick up current. If you see nothing wrong, IDK, probably will need a shop to chase the wiring down and find it. I don't know if a bad starter relay (stuck on) could do that, likely not if it only happens when you depress clutch and have clutch switch on.
Good luck.

Posted on Dec 31, 2012

Testimonial: "With the limited information I provided, it was not the solution, but it did get me headed in the right direction... which ultimately resolved the issue for now."

  • 1 more comment 
  • Billy Post
    Billy Post Jan 03, 2013

    I chased the wiring back from the clutch safety switch to the Prestige auto alarm I installed 7 years ago... then, before going any further, I got in the truck and set the alarm to see if the starter would still engage with the 'kill' feature of the alarm system. It would not start, and afterwards, would no longer start with the clutch switch. Probablya start relay malfunction for the alarm sytem. (It was very cold, in the teens, the morning this began), Everything's working fine now, & back to normal now..

  • montehammons Jan 03, 2013

    Aha! Sounds good, then. Glad you found it.

  • Billy Post
    Billy Post Jan 03, 2013

    ...me too! Noone seemed to know about this one, so, Thank You montehammons.

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  • Chevrolet Expert
  • 230 Answers

Check under dash and make sure no wires are being pinched when clutch is depressed

Posted on Apr 17, 2015

6 Suggested Answers

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Posted on Jan 02, 2017

  • 291 Answers

SOURCE: neutral safety switch

most gm nuet safety is yellow and purple .....out of ignition switch is a big yellow wire that is crank out and input to nuet saf switch......out of nuet switch is color purple that goes strieght to start selenoid.....purple wire also goes to the crank fuse 5amp.. in the fuse box under dash... this fuse goes to the pcm main computer.. same for auto and clutch

Posted on Sep 04, 2009

dnewcombe1
  • 1564 Answers

SOURCE: 1996 k1500 pick up, when OD is engaged or while in

So we don/t get ahead of ourselves, are you positive that it is the starter you are hearing? Often times the flywheel/ring gear, can become loose due to not tightening the mounting bolts for the torque converter enough or the mounting bolts for the flywheel/ring gear itself. Both of these situations will give off a sound similar to that of a starter engaging as the engine is running. Also you'll want to check and make sure that the starter itself is not coming loose from not tightening the mounting bolts correctly. As far as a starter trying to engage on any vehicle except a ford product which utilizes an entirely different type of solenoid, I've never heard that complaint in 4 decades. Best bet is to take a good look around. I'm not saying that this cannot happen, but it would have to be contributed to a very worn or frayed harness somewhere in the starting circuit.Thank you, please let me know what you find I'm intrigued with this problem.Dana

Posted on Sep 10, 2009

  • 49 Answers

SOURCE: 96 S-10 no start, turn key all lights work nothing

bench test starter motor

Posted on Oct 13, 2009

cda2z
  • 120 Answers

SOURCE: truck will start for two weeks then wont. put a

check alternator output at the alt and at battery also put a test light on the starter solenoid at the little wire on solenoid see if it lights up when turn key ? possible positive or negative cables have good ohm checks but not carrying enough current ?

Posted on Jun 01, 2010

ddywrbks
  • 799 Answers

SOURCE: when i turn the ignition

What vehicle make / model / engine size are you working on. That will help to diagnose problem.
I assume your battery has power? Is your security light on or flashing in the instrument cluster with ignition on? Thanks, Mike

Posted on Jun 14, 2011

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Hi Maury, Seems you have a number of different problems at the same time. The grinding sound when pushing the clutch pedal would seem to be the clutch thrust release bearing, which is located inside the bell housing and requires the removal of the gearbox to replace. The warning lights should come on each time the ignition is switched on and then they should extinguish after a few seconds. The illumination of these lights is a fail safe system to show that all warning systems are active. The radio will go off during the period when the starter is engaged as a relay shunts all power to the starter during that procedure. The starter motor uses more power from the battery than any other system. The manufactures have taken this into consideration when designing the circuitry and decided as many others have, to adopt the operation. If when starting from cold this does not happen and the radio plays, it is indicating either excessive drawing of power by the starter and may also be the cause of the grinding noise you experience? Regards John

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I can start my car just by depressing the clutch pedal and not using my key.


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replace the starter. Being a manual transmission you should be able to pop the clutch to get it going till you replace the starter. If you don't know how to pop the clutch follow these steps. That way you can still drive the car. When need to.
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  2. Move the car in position to be pushed from behind or sent down a slope for the starting procedure. Check to see that the brakes will work when pressed and how hard the steering wheel will need to be turned before the vehicle is started. Power steering and brakes will make both systems work poorly until the vehicle is started.
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