How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask RussMasterTech Your Own Question
RussMasterTech, ASE Certified Technician
Category: Chevy
Satisfied Customers: 791
Experience:  19 years of GM Dealership experience. ASE Master with L1 and GM Master Certified in Electrical
Type Your Chevy Question Here...
RussMasterTech is online now
A new question is answered every 9 seconds

2000 s10 blazer: it wont start turns over but wont fire

Customer Question

changed radio in 2000 s10 blazer now it wont start turns over but wont fire
Submitted: 8 years ago.
Category: Chevy
Expert:  RussMasterTech replied 8 years ago.


I'll try my best to help you on this one. It sounds very interesting. I've never heard of a radio causing a no start on a Blazer before.

Let's check all the basics first. Check all the fuses labeled IGN 0, IGN 1 IGN3 etc. Check all the fuses for that matter. Lets make sure nothing blew while you were hooking things up.

If they are all ok, we may be looking at a coincidence.

We will then need to check to see if you have the basics to make the engine run, Spark, Fuel And Air.

See if you have spark at the ignition coil while cranking the engine. If you do, check at the spark plugs next. If no spark is present at the plugs, but is at the coil, then your distributor cap and rotor should be replaced.

If you have plenty of spark, we will need to check for the correct fuel pressure. If you turn the key to the run position, listen for a hum noise from under the truck on the drivers side. That will be the fuel pump that you will be listening for. If you don't hear the pump run for 2 seconds and then stop, you may have a bad pump, or some other issue with getting power back to the pump.

Just to clarify something. Did you cut wires and harnesses to install an aftermarket radio, or did you just replace the old one with another factory unit?

Does the truck start and then stall after 2 seconds? Is the security lamp on or flashing?

If you have questions or need clarification, please don't hesitate to replay to this. If you find the problem, please make sure to click the "Accept" button so I may receive credit for assisting you this evening.

Thanks for using Just Answer.


Related Chevy Questions