05 2500HD 6.0 WIRING DIAGRAM

stressed2500hd · April 12, 2020

Hey guys, new here and I could really use some help. Ive got an 05 2500HD 6.0, 4WD, auto and am in need of a complete wiring diagram. Ive been trying to google it for about 2 hrs with to no avail. Ive ordered the haynes book as no one around had it in stock, but was hoping someone here could point me towards somewhere thats got them online or has some i could get until the book comes in. Got some crazy electrical stuff going on I need to get sorted. Thanks in advance

Grubbworm · April 12, 2020

56 minutes ago, stressed2500hd said:

Hey guys, new here and I could really use some help. Ive got an 05 2500HD 6.0, 4WD, auto and am in need of a complete wiring diagram. Ive been trying to google it for about 2 hrs with to no avail. Ive ordered the haynes book as no one around had it in stock, but was hoping someone here could point me towards somewhere thats got them online or has some i could get until the book comes in. Got some crazy electrical stuff going on I need to get sorted. Thanks in advance

Hey Aaron, I have a 2004 model and would like to have a copy of that wiring diagram if you find one. Good luck, and let me know how that Haynes works out for you.

davester · April 12, 2020

you might try gmupfitter.com

or, if you also work on/repair your vehicle, I can recommend getting a subscription to the full-service manual for your truck at a site like alldatadiy.com. It includes a complete wiring diagram, harness layouts, ground locations, connector pinouts, as well as diagnostic procedures for finding a variety of electrical problems.

I also like using my Autel PowerScan PS100 to help with find electrical problems. Not cheap, but it works really nice and I don't have to fumble with getting both probes of a multimeter in the right spot to get a reading.

Edited April 12, 2020 by davester

stressed2500hd · April 12, 2020

hey davester, thanks for the info there, i wasnt aware alldata had a service like that, figured it only offered the shop services. ill probably end up going that route.

stressed2500hd · April 12, 2020

grubworm once I locate one I'll shoot you a copy

VikingTrad3r · April 16, 2020

Hi guys, id sure love a copy of that too! I have picked up a 04 6.0 2500hd and am currently refurbing it to be put in service at our cottage. Would love that if you find it!

William Dixson · October 15, 2023

On 4/11/2020 at 8:46 PM, davester said:

you might try gmupfitter.com

or, if you also work on/repair your vehicle, I can recommend getting a subscription to the full-service manual for your truck at a site like alldatadiy.com. It includes a complete wiring diagram, harness layouts, ground locations, connector pinouts, as well as diagnostic procedures for finding a variety of electrical problems.

I also like using my Autel PowerScan PS100 to help with find electrical problems. Not cheap, but it works really nice and I don't have to fumble with getting both probes of a multimeter in the right spot to get a reading.

Dont waste your time with GMUPFITTER.COM, IM HAVING ISSUES TOO AND THIS IS DAY 4 OF MY DIAGRAM HUNT. I havent tried aldata.com. if you do share the results please. I'm tired of paying for lies.

William Dixson · October 15, 2023

On 4/11/2020 at 6:01 PM, stressed2500hd said:

Hey guys, new here and I could really use some help. Ive got an 05 2500HD 6.0, 4WD, auto and am in need of a complete wiring diagram. Ive been trying to google it for about 2 hrs with to no avail. Ive ordered the haynes book as no one around had it in stock, but was hoping someone here could point me towards somewhere thats got them online or has some i could get until the book comes in. Got some crazy electrical stuff going on I need to get sorted. Thanks in advance

On 4/11/2020 at 7:01 PM, Grubbworm said:

Hey Aaron, I have a 2004 model and would like to have a copy of that wiring diagram if you find one. Good luck, and let me know how that Haynes works out for you.

Please say you were successful in finding the diagrams. I've searched for 4 days cant find them. I depend on my truck for work and I'm running out of money with it not running. I keep killing batteries. 3 new interstates in one year. Now it kills one in 2 hours. I need help and anything you could share would be a blessing.