The number one cause of intermitted gauge failure, acompanied by a no start is the ignition switch. The switch is a known issue with the second generation s/t series vehicles, and of those years 1997 was by far the worst. From my experience troubleshooting them, nearly 90% of 1997 Blazers, Bravadas, Jimmys, S10s, and Sonomas have needed an ignition switch replacement for various reasons. The switch can cause issues with anything routed through it, another one of the more common problems that can be caused by the switch is erractic/intermitted transmission shift problems. I will attach a link to the replacement procedure. Look for "Ignition Switch Replacement" in the links to the right.
You have a problem with the charging system, probably a bad alternator.
did you check your battery and alternator?
is your battery Low or poor?? Charge your battery on slow charge for 8hrs to give it a good deep charge, Installing an alternator on a low or dead battery will ruin it and also not charge your battery properly.. An alternator is not a battery charger its a battery maintainer!!
An alternator from a 2000 Chevy blazer will fit a 2002 S10 blazer with a little fabrication.
The alternator only needs to be replaced when it fails. Its not a part that needs to be changed during routine maintenance. If it ain't broke, don't fix it!
You could have killed some or all the cells in the battery. You need to replace both battery and alternator at the same time. I had the same problem. After I replaced both I've had no more problems. Take battery and alternator to auto Zone or Advanced Auto so they can test them. Buy new battery and alternator if needed. Fly wheel (Not sure what it is really called) where starter goes could be bad causing starters to wear out.
generally that you have an electrical issue, either your battery is dead or dying, or it could be your alternator also... make sure you have booster cables in your vehicle
sounds like a bad ground. a lot of the g.m. trucks have a poor ground set up. good luck !
take off the belt unplug the wire connector form the back of alternator take the nut off the back of the alternator that holds the wire that is connected to the positive battery terminal and take the two bolts on the bottom of alternator that holds it to the engine
Had the same problem on two occasions with my 99 Blazer...sounds as though your alternator is going bad. The car will run good while the battery is charged up, but as the battery wears down, the engine will run poorly and the gauges will operate erratically. Eventually, the battery will not have enough energy to allow the engine to run, and it will stall.
1st remove negative battery cable from battery. then remove electrical connectors from alternator with ratchet, rotate tentioner pully to remove belt. (near top/center of belt) remove support bracket and mounting bolts and it's off.
The alternator is on it's way out.
ALTINATOR OR STARTER. JUMP START CAR, TAKE POSITIVE CABLE OFF BATTERY,IF CAR DIES IT IS ALTERNATOR. GOOD LUCK
Pull the hot (+) positive lead on the battery while running...If car quits it's bad. Best way is to put voltmeter (Multimeter) on battery while running..if 13 + volts at idle then alternator is good, if 14+ then it's great!
Inside the alternator. When you get a new alternator, you get a new regulator.
Alternator is not charging the battery. When you turn on the lights the system doesn't have enough power to keep the engine running.
Inside the voltage regulator on the alternator.
Your 2004 Chevrolet trail blazer and battery light indicator is always on because the battery has sufficient charge.
Driver side behind alternator. You must remove alternator to change it
may be you're battery if not i have a 91 blazer and it wouldn't start because of a bad wire to my alternator it would turn over but not start if that's not you re problem check your fuses and fuel pump good luck
If you have 2004 Chevrolet trail blazer and your battery light indicator is on, it is probably because of voltage across the battery is 12.1v.
Remove the alternator belt by loosening the tensioner pulley. Remove the wiring from the alternator. Remove the retaining bolts to the alternator. Reverse the process to install the new alternator.
I had a Chevy blazer with the same problem. It had spark, fuel pressure, good battery & good starter. I sprayed some carburetor quick start spray & it started. They blazers have a problem with the fuel injection.
Built into the rear of the alternator
It is built into the alternator NEUTZ