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View Full Version : Replacing H3 Alternator


Mr Ghostrider
08-13-2010, 03:04 PM
The alternator on my 2006 H3 Adv. has been making noises (probably stuffed with mud) for a few years now and I think its time to replace it.

I just dropped the truck off for an exhaust manifold leak and they were going to quote me on the alt also. The dealership before quoted me over $400 to drop in a new OEM one..but I see I can get the alternator on gmpartsdirect.com for $135.63..I could probably even justify a heavier duty alt since I charge a red top, run a Viair air compressor, electric winch and lots of lights.

But before I decide to do that, has anybody removed the H3 alternator before? I have long envied Fords only for the reason that the alternator is sitting right on top. It looks like ours are near the top..but I havent made eye contact with all the bolts or wire attachments which makes me a little nervous.

Any tips, thoughts or a quick write up would be excellent if it exists!!

Thanks!!

Mr Ghostrider
08-13-2010, 05:01 PM
Sheesh! The dealer just quoted me at $500 for a OEM swap on the alternator. But since it is in for a $800 Exhaust Manifold repair...I will be holding off on any dealer alternator swaps and this'll be a DIY job...I hope.