GMC Terrain, Equinox, and SRX Forum banner

Water in Diesel Fuel Tank - 2018 Equinox TD

1018 Views 4 Replies 4 Participants Last post by  IABill
I'm driving a short distance and notice a system warning flash about water in the system, service soon! I made it to Advance Auto to buy an item to mitigate the water in my fuel. I parked on an incline and had barely 1/4 tank of fuel. My plan was to use the additive and fill up the tank full to dissipate or dilute, whatever you want to call it, the water/non-fuel item in my tank. Car wouldn't start turn over. I suppose whatever liquid presumably water that got into the fuel has just made its way into the engine. Had On-Star tow to the dealer today.

Any thoughts, suggestions?
1 - 5 of 5 Posts
Dealer says my fuel system is the tune of a $10K fix! Contact insurance to see if they'll cover or write off the car. sigh
I guess water is a really bad thing to find in diesel fuel, but you were low on fuel and parked on an incline. Couldn’t that have been the reason for the no-start? I think I would’ve tried lugging a 5-gallon jug of diesel over to the vehicle and dumped it in before heading to the Dealer.

But assuming the Dealer isn’t trying to take you for a ride (that never happens, right?) ... if it were this easy to destroy Diesel engines nobody would ever buy them! Aren’t there filters on these fuel systems? And if you get a “Water Alarm” on your dash ... that’s the end of the vehicle??? C’mon.

Were you doing anything unusual with this diesel - like burning bio, or getting your fuel from alternative sources?

Were there any symptoms or related repairs leading up to this failure?

If no, no, and no ... I’m not buying the Dealer’s prognosis. I’d try to find an Independent mechanic familiar with diesels who’ll give you more favorable outcome than a $10k fuel system tear down.
See less See more
I agree with Colt, find a dedicated diesel mechanic. Sounds like the dealer is incapable of a definitive diagnosis and is just rolling out the parts cannon to replace everything from the fuel tank to the injectors.
  • Like
Reactions: 1
If you can get it repaired and decide to keep it read owners manual fuel filter section it covers draining the water separator. It says drain every oil change I do it every second sometimes third but have never has more than a couple of table spoons in the bottom of my catch bucket, Good Luck!
1 - 5 of 5 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.