Alternator question

[Rosson03]

Hey guys I think my alternator is going bad I was wondering what is the biggest AC Delco amp alternator that will replace the factory alternator I don't want to go to Fancy with another brand I just want to keep it ACDelco reason why I said my alter maybe going bad is my battery code popped up ECU
Electrical charging unit system
The battery is about 2 years old and it's a legend battery from Napa
I didn't pick the battery on this Denali you may have seen my old thread, Another Denali I got a AGMs than that one

 

[Chrismnj]

go with a 250A, anything bigger will require wire upgrade.

 

[Rosson03]

Got a model number

 

[Chrismnj]

Don't have one for AC Delco, as I went with this https://www.powerbastards.com/products.asp?cat=129137

 

[Rosson03]

Great thanks sure beats the stock 1

 

[Chrismnj]

Great thanks sure beats the stock 1

Have use them in past never single problem, and you have the option to power-coat, sure pricier than AC Delco one but well worth it specially if you running additional accessories or a 2nd battery.

 

[thompsoj22]

went through the alternator dilemma, bought a "new" alternator from napa 160 amp DR44 badging but "made in china" stamped on the box, $330 dollars and it crapped in 600 miles and returned it. bought the napa professional series remanufactured 160 amp for $157 and it is still going strong. I do run a "overdrive pulley" 2 inch in the summer as i live in the desert and ac on max at an idle is just part of living here and in my opinion the factory 2.5 pulley prevents the alternator from keeping up with the load demands in the summer. not sure on your year vehicle but i advise replacing the charge/temp monitor module associated with RVC, ACDELCO its $27 and IMO should be replaced just as preventative maint. watch out for the "made in china" knockoffs on ebay.

 

[Rosson03]

2007 denali

went through the alternator dilemma, bought a "new" alternator from napa 160 amp DR44 badging but "made in china" stamped on the box, $330 dollars and it crapped in 600 miles and returned it. bought the napa professional series remanufactured 160 amp for $157 and it is still going strong. I do run a "overdrive pulley" 2 inch in the summer as i live in the desert and ac on max at an idle is just part of living here and in my opinion the factory 2.5 pulley prevents the alternator from keeping up with the load demands in the summer. not sure on your year vehicle but i advise replacing the charge/temp monitor module associated with RVC, ACDELCO its $27 and IMO should be replaced just as preventative maint. watch out for the "made in china" knockoffs on ebay.

 

[kf7grq]

I also had to do the alternator swap. I ordered a 145amp on Amazon, plus the required expanded size belt. Buick dealer installed it in my Escalade with no problem. My radios indicate 14.7 instead of 13.8 on start up.

 

[Rosson03]

Don't have one for AC Delco, as I went with this https://www.powerbastards.com/products.asp?cat=129137

Same belt