ACDelco Gold 335-1086 Alternator

This was a perfect fit for my 2002 Suburban. Took about 45 minutes from start to finish, and worked perfectly. This was one of the best priced options so I'm glad we choose this one from a long list of options. If it lasts half as long as the original one did, I'll call it a great value.

Really nice looking alternator, very simple install. functional & good voltage power, worth the value. Kepps battery charged very well. Fits perfect on any Chevy with a 105amp alternator.----2003 Silverado 1500 4x4, 5.3 LS----1 - Pop open beer...2- remove air filter3- loosen the belt ( belt tensioner ) ( 15mm )4- remove the 2 screws through the front ( 15mm )5- might need to use crowbar to lift out old alternator / put in new one6- unplug the 2 plugs in back7- replace with new alternator ( might need some massaging to put in )8- do step 6 -through 1 to finish install

Exactly what I needed to replace a defective alternator on a 2001 Chevrolet Suburban 1500. For this application I did have to have an adaptor wire to connect the four wire original to the dual plug on the alternator.

Fits and works great on my 04 Lly duramax!

It was not the item as described . It’s a Chinese aftermarket with a ac delco sticker on it , inside of a AC DELCO BOX. It’s not even a Delphi brand. Very disappointed . Chinese 90 dollars . This one was over $150

I read some reviews where there were complaints of the alternator making a whining noise. This may be normal for new alternators until the brushes are seated. The alternator I installed made a slight whining noise but after 4,000 miles since installing it, I no longer hear it. The original alternator has 225,000 miles on it and was still working but as a "playing it safe" I decided to replace it because I didn't want to break down on a deserted highway somewhere between here and there.

Works

Straight drop in for my 2005 Duramax diesel. Immediately was charging at 14.4 volts. Keep in mind there are bushings that the mounting bolts go through and they will most likely need to be pushed back out to make room for the new alternator to drop right in. If you go to drop in your new alternator and it appears too tight or won't fit in - DO NOT HAMMER IT OR FILE DOWN THE ALTERNATOR... just make a little press. Take a look at my pictures above, I just used a long spare bolt & nut and found a socket large enough to fit over the outside of the bushing but small enough to rest on the mounting cradle. I then pushed the bolt though the socket and attached the nut on the other end (see pics). I then took an open ended wrench on each end and tightened the bolt until the bushing moved forward and was flush with the mounting cradle. There are only two bushings and they are both up front. After this the alternator dropped right in and I bolted it up. When you tighten the bolts on the new alternator, the bushings will move forward and fit snug on the new alternator making a tight and aligned fit. I hope this helps!