1997 GMC Suburban Intermittent No Start

1997 GMC C1500
Avatar
K1500BROKEN
  • MEMBER
  • 1 POST
When my truck does start I can hear the fuel pump working for a second, and the fuel pump relay clicks a few times. it starts, runs and drives with ease. Usually after sitting for a long period of time it fires up as usuall. I have noted when it won't start. This is when I turn the key to the on poss. I don't get a relay click, or fuel pump noise. I already replaced the ignition module, cap, rotor, plugs,
Is there a reason my fuel pump, and relay won't get a signal to engage?
Dec 1, 2006 at 12:23 PM
Advertisement
Avatar
BACKYARDMECHANIC
  • ✓Experienced Mechanic
  • 337 POSTS
It sounds as if the fuel pump relay needs to be replaced. The only way to reall know is when the car won't start see if there is power going to the relay and if it is then the relay is bad.
Dec 12, 2006 at 9:37 AM

Suggested Repair

When the truck will not start, check for power at the fuel pump relay. If power is present but the relay does not click and the pump does not run, replace the fuel pump relay.

Conversation Summary

The owner of a 1997 GMC Suburban K1500 reports intermittent no-start. When it starts, the fuel pump primes briefly and the relay clicks; when it will not start, turning the key on produces no relay click or pump noise. The ignition module, cap, rotor, and plugs were already replaced. The expert recommends checking for power at the fuel pump relay during a no-start and replacing the relay if power is present.

Related Repair Questions

Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle