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alternator replacement

Battery light on with new HO alternator

So, I upgraded my alternator a few weeks ago and got a brand new battery. My truck is a 1997 Chevy Cheyenne 5.7 Vortec. I upgraded from a stock 105 amp to a JS 380 amp with a new 700 crank battery. I haven’t had any issues with the install except for 1 thing, the battery light is constantly...
- AlphaNate22
- Thread
- Aug 17, 2025
- alternator replacement battery light
- Replies: 8
- Forum: Electronics
Dual alternator on 6.5L, new Bosch wiring different

I have dual alternators on my 6.5L(EDIT: 1996 K3500 Cheyenne) and the passenger side went bad. No amperage coming through big red wire and no tach reading. I ordered a Bosch replacement from RockAuto and it fit at the mounting points but the connector was different and there wasn't space for the...
- Angelo
- Thread
- Mar 25, 2025
- alternator alternator replacement bosch tachometer
- Replies: 21
- Forum: Engine Performance + Maintenance
Please delete thread

Please delete thread
- Angelo
- Thread
- Mar 17, 2025
- alternator alternator replacement tach tach signal alternator gas diesel tachometer
- Replies: 1
- Forum: Engine Performance + Maintenance
'97 Silverado Alternator Replacement

The alternator on our '97 Silverado 2WD 350/AT has given up the ghost. I've looked at videos & read reviews in which some replacement units require modifications in order to get then to reinstall. Any of you done replacements in which NOTHING was needed to make the change? If so, I'd appreciate...
- Bluesman
- Thread
- Apr 5, 2021
- alternator replacement
- Replies: 2
- Forum: Engine Performance + Maintenance