2000 Tahoe waterpump

[JonnyTahoe]

I am going to replace my 2000 tahoe 5.3 waterpump. This will be the 2nd replacement pump on the truck. It has 250,000 mi. I want this pump to be the last pump. I didnt install the last one but would assume it was from a auto store. Do any of you guys think it is worth spending the extra money to go with a factory GM waterpump or do you think the best NAPA pump would be sufficiant?. I have never bought a pump from the dealer and would guess they are no better than a auto store pump would anyone disagree?. Whats the deal with some inlet size being different than what the original was? anyone ever heard of this? I went to the Dealer and was told it could be one of two sizes depending on if it was replaced or not is this correct?.

 

[Resident Psycho]

You will be fine using an aftermarket pump. I am a Honda tech (17 years now) and just put an aftermarket pump on. I think my cost was $140 for the part (dealer was a little over $200), but I get dealer cost on parts. One suggestion though...Get a thermostat for it also since it bolts on the water pump...And the pump is easy to replace also.

 

[livingez_123]

you can't beat a lifetime warranty on an aftermarket pump.....Does GM offer that?