SuperStock Posted December 6, 2010 Report Share Posted December 6, 2010 I want to get a 145amp alternator. Do i need to change anything like my pcm or will it just work fine as soon as I put the bigger alternator in. Quote Link to comment Share on other sites More sharing options...
12'SROCK Posted December 6, 2010 Report Share Posted December 6, 2010 Just plug and play. Make sure you get an alternator from your year (2004) Tahoe as they have the 145AMP alternator already VS your 105AMP. Good luck! Quote Link to comment Share on other sites More sharing options...
misterp Posted December 6, 2010 Report Share Posted December 6, 2010 (edited) You might need to change the belt, a different belt size might (or might not) be called for; get the same belt listed in the parts manual for the donor truck. And if your belt tensioner has 60K+ miles on it, replace it as well. Mr. P. Edited December 6, 2010 by Mr. P. (see edit history) Quote Link to comment Share on other sites More sharing options...
SuperStock Posted December 6, 2010 Author Report Share Posted December 6, 2010 Yea I just changed both my belts at 106k. How do I find an alternator that will work with my current belt? Quote Link to comment Share on other sites More sharing options...
wopc69 Posted December 7, 2010 Report Share Posted December 7, 2010 Yea I just changed both my belts at 106k. How do I find an alternator that will work with my current belt? Just did this upgrade last night and used same belt Quote Link to comment Share on other sites More sharing options...
SuperStock Posted December 7, 2010 Author Report Share Posted December 7, 2010 What kind and model alternator did you use? Quote Link to comment Share on other sites More sharing options...
wopc69 Posted December 7, 2010 Report Share Posted December 7, 2010 What kind and model alternator did you use? part #DR44G just go to oriellys and ask for the tahoe of the same year Quote Link to comment Share on other sites More sharing options...
SuperStock Posted December 8, 2010 Author Report Share Posted December 8, 2010 part #DR44G just go to oriellys and ask for the tahoe of the same year So that part # dosent require me to buy a new belt. Quote Link to comment Share on other sites More sharing options...
wopc69 Posted December 9, 2010 Report Share Posted December 9, 2010 So that part # dosent require me to buy a new belt. I didnt need a new belt but im supercharged and 2.8 pulley so i already had to put a different size belt. Quote Link to comment Share on other sites More sharing options...
SuperStock Posted December 9, 2010 Author Report Share Posted December 9, 2010 So I guess im SOL on if the belt fits or not. Quote Link to comment Share on other sites More sharing options...
misterp Posted December 9, 2010 Report Share Posted December 9, 2010 So I guess im SOL on if the belt fits or not. The variable is the size of the pulley on the alternator - they're not all the same size from vehicle to vehicle. The larger Delco 244 alternator requires a little longer belt (1/2-inch???) but if it has a smaller pulley than the pulley you are running now then that will cancel out and the same length belt will fit! PITA I know. If your belt is a little short then the parts store can swap you for the next longest belt until you find the one that fits, it will *probably* be the one used on the donor truck. Mr. P. Quote Link to comment Share on other sites More sharing options...
T-Bag Posted December 9, 2010 Report Share Posted December 9, 2010 http://www.silveradoss.com/forums/topic/67489-looking-for-a-part/ Quote Link to comment Share on other sites More sharing options...
Cramer Posted December 12, 2010 Report Share Posted December 12, 2010 You will need a longer belt. 3/4" longer if I recall. I upgraded mint to the DR44G, and used an overdrive pulley (smaller) on it, and the tensioner is really tight still with the longer belt. It isn't the size of the pulley that makes you need a new belt with the swap. The case on the 145amp alt is bigger, and the pulley shaft is higher up than the stock alt. Quote Link to comment Share on other sites More sharing options...
idahoBLKss Posted December 12, 2010 Report Share Posted December 12, 2010 where are you guys getting your alts. and what are you paying? Quote Link to comment Share on other sites More sharing options...
hottelboy Posted December 12, 2010 Report Share Posted December 12, 2010 where are you guys getting your alts. and what are you paying? x2 Quote Link to comment Share on other sites More sharing options...
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