How to read fault codes on a 98 Suburban

[Maverick247365]

I have a 98 Suburban 5,7L.

Check engine light flashes and engine doesn't run smoothly. It vibrates a lot.

How do I read the fault codes without diagnostic equipment?

Any other suggestions to my problem are also welcome.

[1997SierraSLT]

https://www.amazon.com/OBD2-Scanner-OBDII-Code-Reader/dp/B011Q18D14/ref=sr_1_7?ie=UTF8&qid=1501868795&sr=8-7&keywords=obd-ii

 

Sounds like you'll get the classic P0300 code which is a random misfire

[Heavy 5.7]

How do I read the fault codes without diagnostic equipment?

You can't, you have to use a scanner.

[grampadirt]

Jumping pins with a paperclip ended in '95.

[arcasey]

You probably need a new distributor cap, plugs, and wires. As other have said you need a scanner to read codes.

[Maverick247365]

Got a scanner now.

First no codes to read. Have ordered new cap and rotor.

Got a new fault code PO171 System til lean bank 1.

[ifixedit]

https://www.obd-codes.com/p0171