99 s10 4x4

[Michael69]

Hey I need help I can't get my s10 running I've replaced the fuel pump,spider injectors,plugs,wires cap,rotary button,crank sensor,coil,just about everything and it will not run security light stays on 24/7 tried the bypass module for the security and nothing works it will run for about 2 seconds please help

[Jsdirt]

Yikes - I hope you didn't replace all that due to this issue. I'd bet it's a blown fuse in the underhood fuse box. Can't recall what label it's under, so check them all - I'll bet you'll find one.

[Michael69]

No I checked all the fuses first but thanks

Could it be that relay that mounts on the the firewall

[Michael69]

Hey I need help I can't get my s10 running I've replaced the fuel pump,spider injectors,plugs,wires cap,rotary button,crank sensor,coil,just about everything and it will not run security light stays on 24/7 tried the bypass module for the security and nothing works it will run for about 2 seconds please help

[Doug_Scott]

Is it setting any codes? Can you recall what the truck was doing just before the security light came on? Was there any electrical work being done on the truck around the time this all started happening? Do yourself a favour and stop throwing parts at it hoping that one will stick. Check for any trouble codes in the computer and remove and clean all battery connections, at both ends, paying particular attention to ends of the cables where they get crimped into the connectors. If you see any green or white powder in those areas, consider replacing those cables.

[silverlite]

If the bypass module is the basic fuse with the key deal those are extremely short term non fixes. If you don't have a code reader, see if Advance or Autozone in your area rents them and check for codes. Could be several different things..... Google: your year, make and model along with "security light stays on" (minus the quotation marks). One thing with the Chevy/Buick/GM security lights is: fuses, ignition switch, etc may be causing the problem....

Also Google: Blazer forum..... Lots of great advice on there. Your question has probably been covered over there.... If not, they're very helpful.

[silverlite]

Oh, forgot to mention...... Sometimes, a very worn down key can be either the problem or a contributing factor.......

Try using some lock cleaner..... Lowes Hardware has some great 3in1 lock oil that is even better than liquid graphite too.

I would try cleaning the lock, checking fuses related to security system and codes. Also, have you had the starter tested?, battery?, alternator? Does it make any clicking noises when you try to start it? It may just be the starter solenoid going bad.... eBay has some excellent prices on new starters if you have time to wait for it to be shipped.

A few months ago my 99 Buick LeSabre had gotten harder and harder to start.... Then it clicked a few more times.... battery drained down after too many attempts..... then it stopped clicking at all. Starter cost about $49 off of EBay. Bad solenoid.... The solenoid separate would have cost almost as much as a whole brand new starter..... I opted for the whole thing. Also, if you pull just the starter and battery. You can bring it to any Autozone or Advance and they will test them for free. I will point out though.... I've had starters that tested good but were still on their way out..... Hopefully this will at least give you a better idea of where to look next.... Also wouldn't hurt to have alternator tested too. It's another link in the chain so to speak....