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2003 Suburban: Autoenginuity is giving me a P1172 - pump has insuffici
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Question
calsdad
This is happening on a 2003 Chevy Suburban 2500 4x4:
I just picked up the Autoenginuity scanner to try and figure out some of the problems I have had with this truck.
I've been having an issue with the truck for a number of months - which seems to manifest when I drive it on the highway for a while - at speeds around 70mph.
The engine light will light on the dash and I'll see it flicker. Sometimes it will go off on it's own after driving around town.
So when I scanned the truck for the first time using Autoenginuity - it said that the truck had a misfire code (forgot the number) - and also a " P1172" code which said " fuel pump insufficient flow".
I used Autoenginuity to clear the codes - and the misfire code cleared and did not come back (I've only idled the truck in the driveway since - have not driven it).
But the P1172 code still comes back - and I've tried to clear it a number of times.
I should also add that the truck does have some sort of leak in the gas tank - when I fill it it up I will get a whiff of gas around the area of the truck. I believe the fuel pump/sender unit may have a some rust thru on it. I've been meaning to pull the tank and change that out - but to avoid the gas smell - I've just been restricting myself to only filling the tank halfway.
If there was a vacuum leak in the tank - would that potentially be causing the thing to throw this P1172 code?
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