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· Registered
2003 chevy trailblazer_ls
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605 Posts
Discussion Starter · #1 ·
Hey guys, Right now I got 99, 213 KM on my TB or 61 648 miles.

I am trying to do as much maintenance right now cause I got the week off from work.

Last week I changed over from dino to synthetic oil.
Yesterday I recharged my air filter.
Today did the fuel filter.

Tomorrow goin to do the transfer case oil.
Real Soon the front and rear differentials oils.

From the top of my head this is what I can come up with:

Clean throttle body --- gonna do
Change power steering fluid --- gonna do
Change brake fluid --- ?
Coolant flush --- ?
Spark plugs --- to early?

Anything else?
 

· Registered
2003 chevy trailblazer_ls
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605 Posts
Discussion Starter · #4 ·
Hey guys, Right now I got 99, 213 KM on my TB or 61 648 miles.

I am trying to do as much maintenance right now cause I got the week off from work.

Last week I changed over from dino to synthetic oil.
Yesterday I recharged my air filter.
Today did the fuel filter.

Tomorrow goin to do the transfer case oil.
Real Soon the front and rear differentials oils.

From the top of my head this is what I can come up with:

Clean throttle body --- gonna do
Change power steering fluid --- gonna do
Change brake fluid --- ?
Coolant flush --- ?
Spark plugs --- to early?

Anything else?
Did the transfer case today. Went good. Only thing that is a pain is refilling it.
 

· Banned
2003 gmc envoy_slt
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8,149 Posts
The transfer pump from Harbor Freight makes the job much easier. They're about $6. Buy two. One for the t-case and one for the differentials. Or get one and wash it out before switching.:m2:
 

· Registered
2003 chevy trailblazer_ls
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605 Posts
Discussion Starter · #6 ·
I actually bought 2 different styles: The red one holds 1L and the hand pump holds 500ml.

I used the red one for 5 minutes before switching over to the hand pump.

It would take a long time to fill the T-case with the red one because it just gives very little shots of fluid at a time.

The hand pump is much quicker. My dad drawed, handed me the pump, and I filled.

 

· Registered
2003 chevy trailblazer_ls
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605 Posts
Discussion Starter · #7 ·
Still got to do:

Front diff
Rear diff
Tranny-full flush
Power steering- anybody know how much fluid is needed?
Brake- still uncertain on what to do -- flush, bleed?
Coolant
Spark plugs
Throttle body
Serp belt

Anything else?
 

· Registered
2003 chevy trailblazer_ls
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605 Posts
Discussion Starter · #8 ·
Picked up power steering fluid, throttle body cleaner, and diff oil today.

Just worked on the powersteering. I used the turkey baster method. Oil was very dark. Suctioned it out and put it in a Pepsi bottle. Left the bottle on the side of my house. Hopefully nobody thinks its Pepsi cause they will be in for a rude suprise!!!!

Going to redo it again in a week.
 

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2003 chevy trailblazer_ls
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605 Posts
Discussion Starter · #12 ·
Today did the front and rear diff.

Front was simple enough. Just had to pull the drivers side front wheel off. The refill plug is 18mm. The drain plug is 1/2" IIRC. When I took off the fill plug I saw metal shavings. Opened the drain plug and nothing came out. It was bone dry. Filled it up.

The rear was simple. I just jacked it up from the passenger side. Right in front of the rear wheel. The fill and drain plugs are a 3/8" ratchet. Make sure the ratchet sit flush with the plugs or it will round them off. I slid under the TB front the rear and got it done. No need the drop the spare.

Always use jack stands.
 

· Banned
2007 chevy trailblazer_ls
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1,547 Posts
Today did the front and rear diff.

Front was simple enough. Just had to pull the drivers side front wheel off. The refill plug is 18mm. The drain plug is 1/2" IIRC. When I took off the fill plug I saw metal shavings. Opened the drain plug and nothing came out. It was bone dry. Filled it up..
When was the last time you checked the front diff? Was there any signs of a leak?
 

· Registered
2003 chevy trailblazer_ls
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605 Posts
Discussion Starter · #15 ·
Hey guys getting ready to do the spark plugs and throttle body.

I have a quick question, in my Haynes manual they call for the AC Delco 41-965 spark plug.

In my owners manual they call for the AC Delco 41-981.

I dont know why there is a difference between the two manuals.

Anybody know which one?

Thanks.
 

· Premium Member
2007 chevy trailblazer_ss_1ss
Joined
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1,864 Posts
Just go to the dealer for the spark plugs, give them your VIN and they can look up exactly what you need.

If you had a puddle of gear oil under the truck, that's a big leak. Probably more than an axle seal or pinion seal. Is the case half leaking possibly?
 

· Registered
2002 olds bravada
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2,383 Posts
..get that checked out right away and have it sealed/fixed asap. If you dont, your diff can lock up on you and cause much more problems.

As for the plugs, go with which ever one is iridium.
 
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