Gx470 Fuel Gauge Error

[stoshzack]

Hi All -

Anyone have issues with their fuel gauge reading low? Our 2003 GX470 with 102K suddenly started reading half a tank less than the actual amount. I am guessing it is a stuck fuel float/sending unit. Thanks for any thoughts.

 

[GXO]

I PMed my entire pump, etc. recently. That sounds like the sending unit. It is all one piece, so if you plan to fix it you might as well buy once cry once and buy the whole assembly (IIRC $600) and drop the tank and swap the whole thing. Get the top gasket and retaining ring too. Then, worst case, you can buy a sending unit and fix the old and have a shelf spare.

 

[stoshzack]

Thanks Vlad

 

[Cjshonky]

I've seen there is an access panel/hole under the second row seats. Would it be easier to get access to that panel rather than dropping the tank? I've been considering it because I have a very small evap leak and want to replace some of the lines.

 

[GXO]

Possible if you have a very small person to help. Can't pull anything out that way

 

[stoshzack]

@Vlad

Any chance you have the part numbers for the assembly, gasket, and retaining ring?

 

[GXO]

Maybe - Validate to your year. Mine is an 03. Not sure if there are variations with VVTi for 05+

77020-35062	Fuel Pump Assembly	$541.58	1	$541.58
77169-04050	Gasket Fuel Suction	$2.96	1	$2.96
77144-35010	Fuel Pump Assembly Retainer	$30.89	1	$30.89

 

[stoshzack]

Thanks @Vlad