Recently purchased a used 2017 Equinox, always owned Trailblazers, NEVER a issue, but screen this vehicle prior to purchase, first road trip found that the fuel gauge lies and found myself stranded on hwy, Had car towed to chevy repair shop to diagnose the problem, got the call no fuel in tank, sending unit failure, quoted parts 13506192 & 13506694 which are fuel pump and sensor respectfully, is it necessary to replace fuel pump to fix gas gauge reading issues?

 

Did the indicated range in the cluster reflect what the gauge was telling you? The fuel gauge in ours is wonky sometimes, but the indicated range/miles to empty is always accurate. If yours is behaving the same way, the sensor is fine and the gauge itself in the cluster is bad.

To answer your question, it's not necessary to replace the pump if only the sensor is bad and they're sold separately. Also, if your Equinox is like the older ones (and I believe it is) there are actually two fuel level sensors. The saddle design of the fuel tank requires there to be a sensor on each side of the tank. It straddles the exhaust/rear driveaxle tunnel.

 

When my vehicle ran out, gauge indicated 1/2 tank. I didn't check miles till empty. The age of my Equinox is 2017 and 37,500M / 60,300Km.

 

Put some Seafoam or Techron in your tank. Had a Vette that would go funny every so often and this did the trick. This has been mentioned on various sites and it usually works. Something about copper parts in the fuel level sensor corroding and giving inaccurate readings. Good luck.

 

Thanks for the tip, worth a try

 

GM had a TSB many years ago that recommended Chevron Techron Fuel System Cleaner in the black bottle to clean sulfur off the contacts on fuel sending units. I can tell you based on firsthand experience that it works.

 

I couldn't find any Techron products, I was able to pick up Sea foam and giving it try.

 

Availability may be different in Canada, but here in the USA it's sold at virtually all auto parts stores, Walmart, and even some convenience stores/truck stops. I doubt Seafoam will work because it contains a very different blend of chemicals.

 

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