Does anyone have a good idea to what the cost of installation for a sending unit is?

Thanks in advance.

2000 Silverado Z71

Hi and welcome...which sending unit are you asking about?

I'm asking about the fuel sending unit.
Thanks.

The dealer will charge you about $450 for the pump and an extra $450 to install it.
I have seen Fuel pumps as cheap as $89, but not sure if I would trust those.

I paid $290 at Autozone for mine

Look here for some advise:
http://www.automotiveforums.com/vbulletin/showthread.php?t=646650
I have seen a new pump/sending unit on eBay for $139. The dealer wants like $450 and another $450 to install just like silverado122775 said.

well, thank y'all for the info and advice, but that sounds kinda steep. I think i'll live with my erratic gauge for a while.

I bought the 139 dollar one from ebay and with a case of beer and 3 friends to watch most of the time and help remove and replace the box, it took about 2 hours to switch the pump/sending unit. That was 2 years ago and no problems since. The only thing to check for is that they recommend replacing the wiring harness pigtail too. I didn't on the siverado, but did on a couple of others that the pump actually went out on.

My gage is only useful from about 1/2 down unless the engine idles for a couple minutes like at a train crossing. Then the needle flips back and forth and the low fuel light goes on and off. I get about 300 miles per tank in the city so then the trip meter gets close to 300 I fill up and reset it.

Thanks Sonny I'll try that. What engine do you have in your truck? It'll give me an idea to how many MPG i get in mine. By the way mine's a 4WD.

Mine's a 2000 4WD, 5.3l, ext cab, short bed, LS model.

I get pretty close to the same, depending on my mood :D