Best Answer

First, disconnect a battery cable, then you have to loosen the belt. The belt tensioner is at the bottom of the engine near the alternator. Put a 3/8" socket in the square hole in it to take the tension from the belt.

The alternator is held in place with three bolts, two of them are on the rear (facing the firewall) and one is at the front. You need a 15mm socket for one of them and a 13mm for the other two. You can reach two of them from the top if you have a small arm that you can get to the back of the alternator. One bolt is hard to see, an inspection mirror is helpful, but you can feel around and find them. There is little room to fit a standard wrench or socket wrench, so it helps to have a 1/4" drive socket wrench or a set of stubby wrenches. The third bolt on the front can be reached from underneath the truck. You do not have a lot of room between the fan and the alternator to get a socket wrench to it.

After removing the three bolts, the alternator will fall out of it's mount, but you will still have difficulty removing it. You first disconnect the wiring harness. The power wire is long enough that you can get the alternator out from the underside and then remove it. The alternator will not reach the ground with the wire attached, but you can set it on a frame member and remove the power wire.

The fan shroud, belt tensioner, some hoses, and wiring get in the way, but you can carefully work the alternator out from underneath the truck, but it is a tight squeeze. It is fairly easy to work the alternator out if you remove the tensioner. There is only one bolt and it is easily accessible for underneath the truck.

One thing to remember when you remonw the bolts from the alternator is to be careful about how much stress you put on the rear bracket! If you let the alternator leverage this bracket it will bend out of place, and it makes it a serious bear to put the new alternator in! I had to do this last night on a 2000 model with the 4 cylinder engine. The key to it is to remove the plastic shrouding around the top of the radiator. There are 3 10 mm head bolts at the front lip and then two more on each side of the fan shroud. Once you get this stuff out of the way (about 10 minutes worth) the accessibility to the Alt is greatly improved. It was not necessary for me to remove the idler pulley. I used a 12 inch bar plus a 10 inch pipe extension for the idler pulley with the 3./8ths drive to rotate the pully and remove the belt. It needs to rotate roughly 90 degrees to fully get out of the way of the belt. On the 2000 model the bracket that holds the alt is cast iron and not subject to being bent. I wrapped a heavy nylon string around the drive pulley and strung it from the hood (held up with prop rod) to keep it from falling. I was able to do all of the work from the top. 1/4 drive ratchets do help given the tight space around the alt. I used a 3/8 drive ratchet to get the 15 mm bolt, the others are 13 mm as noted. Total time for me was about an hour which given it was the first time to do this particular job was not too bad. $120 for a new, not rebuilt alternator

i found this little helpful hint out when i had to do my alternator on my 2002 2.2. there's a little mudflap that folds up right by the inner fender, the thing that keeps stuff out of the engine compartment, and you can see the whole back of the alternator and you can touch all the spark plugs and everything. all you have to do is take the wheel off!!!

Always make it a habit to disconnect the negative side of the battery first and reconnect it last.

User Avatar

Wiki User

โˆ™ 2015-07-15 20:54:36
This answer is:
User Avatar
Study guides
See all Study Guides
Create a Study Guide

Add your answer:

Earn +20 pts
Q: How do you replace the alternator on a 1999 Chevy S-10 2.2L?
Write your answer...
Related questions

Where is the crank sensor located on a 2000 Chevy Cavalier 4 cyl 22L?

Rear of the engine block.

What is the rev limit for a 98 Chevy s-10 pickup 22L 4-cylinder engine?

5800 RPM

What does 22L equal?

22L (liters) is 5.81 US gallons.

Where is the crank sensor located on a 2000 Chevy Cavalier 4-cylinder 22L?

it is next to the coils at the rear of the engin between the tranmission and the engin

If you replace the flex pipe on a 95 Camry 22L do you have to replace the catalytic converter too?

No you don't. They can cut the pipe and weld the flex pipe into place...otherwise it will get VERY costly

How do you change the thermostat on a 1996 Chevy Cavalier 22L?

The thermostat is on the water pump.(the left side in the front of the car) 2 screws to take out that's all

How do you replace a motor mount on a 95 Chevy s10 4-cylinder 22l?

To replace a motor mount on a 1995 Chevy S-10 4-cylinder 2.2L, the engine will need to be hoisted up out of the vehicle until the new motor mount is welded in, if the mount is rusted out. Then lower the engine, keeping it on the hoist until both motor mounts are secured. Then, it will be necessary to hook up all other parts to the motor, like the transmission. If the motor mount is only missing the bolt, then replace the bolt with a new one.

Location of fuel pump emergency shutoff switch on 1996 Chevy s 10 22l?

GM doesn't have the fuel pump inertia switch. That's a Ford thing.

Where is the throttle position sensor on a 1999 Sunfire 22l and how do you change it?

the t.p.s is right across from the throttle cable on the throttle body the when u find it u will see how to take it off

Is the Winchester 22l or lr a bb gun?

lr stands for long rifle(uses a bullet) I dont know where you got 22l from

You replaced the head on your 1997 Chevy s10 22l 4 cylinder and it wont idle without sounding like it's missing why?

Generally when the head gets replaced you would also want to replace your plugs as well. It can sometimes be a result from where the water has traveled into the oil from a bad head. I replaced mine with bosch platinum 2 and haven't regretted it for 2 years.

Why would a 1989 Mazda 626 22L suddenly start backfiring running very rough and losing torque?

your eng has jump timeing Or you may need to replace the cam position sensor

How many quarts of oil does it take to fill a 22L Chevy engine?

My 97 cavalier 2.2L engine takes 4 quarts. There are two different 2.2 Chevy motors. One holds about 4 qts. and one holds about 5qts. Always check after filling and circulating the oil.

How much water does a normal toilet waste?


How many gallons in 22l?

That is 6.063 US gallons.

What is the value of your Winchester 22l model 77?

50-200 usd

How much is a Winchester .22L worth?

Impossible to answer without more information

Where can you find the value of a gecado 22L R revolver?

20-50 or so

What is the value of browning 22l pistol?

10-1000 USD depending on specifics.

How old is your herstal 22l brevete sgdg sn364994?

No published sn data.

Mitchell arms mod ap80 call 22l when was a mitchell ap-74 made what is a jager ap-74 22lr worth what is the value of a jager armi ap 15 what is the value of a jager ap-74 22l?

100 or so

What are the torque specs for a 1991 Chevy Cavaliers 22L head bolts?

48 foot pounds start from the center and work your way out. then go back over them and tighten them an additional 1/4 turn. remember you have to use new headbolts each time you remove the head

What happens to the mass of 18mL water when it vaporizes to form about 22L of water vapor?

It Evaporates itself

What is the value of a Winchester model 74 22L rifle?

Can vary from 100-400 USD or so

What is the value of a 22 Pump Model 62A 22L or L serial?

50-500 usd