What is a good maintenance schedule for an ATF change?
Thread Starter
TECH Resident
Joined: Jan 2002
Posts: 896
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From: Picatinny Arsenal, NJ
What is a good maintenance schedule for an ATF change? I've had my 2002 Z28 for over two years. It has a little over 30,000 miles on the odometer and I haven't even changed the ATF yet. Now, I'm probably overdue for an ATF change and I'll get that done shortly, but what is the regular maintenance schedule for an ATF change? Also, since my topic is maintenance related, when would be a good time to change the spark plugs, wires, coolant, PCV valve, and the fuel filter? Thanks in advance for the info.
TECH Enthusiast
Joined: Nov 2001
Posts: 521
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From: Farmingdale NJ
Re: What is a good maintenance schedule for an ATF change? Factory recomends 30k, 15-20k for "hard service", like towing or performance driving. I tend to agree with that, it's cheap insurance.
Fuel filter should be done every 20k or so, again cheap insurance if you can change it yourself.
Wires on LS1's really never need changing unless there is evidance of physical damage. The stock wires perform beyond the needs of the engine, and do a very good job at noise suppression wich can not only interfere with the radio but the ECM.
Coolant I wouldn't worry about till 50k at least, the factory says 100 but I'd at least do a drain and fill (flush is not necissary) at 50k. Use ONLY GM approved Dex Cool!!!!
Plugs I would do at 30k, the factory says 100 but I've seen them in poor shape by 30.
PCV I wouldn't bother with unless you have an oil consumption issue.
I'd also think about doing rear gear oil at around 50k, and brake fluid flushes every 2 years. Now would also be a good time to check the condition of the belts.
Fuel filter should be done every 20k or so, again cheap insurance if you can change it yourself.
Wires on LS1's really never need changing unless there is evidance of physical damage. The stock wires perform beyond the needs of the engine, and do a very good job at noise suppression wich can not only interfere with the radio but the ECM.
Coolant I wouldn't worry about till 50k at least, the factory says 100 but I'd at least do a drain and fill (flush is not necissary) at 50k. Use ONLY GM approved Dex Cool!!!!
Plugs I would do at 30k, the factory says 100 but I've seen them in poor shape by 30.
PCV I wouldn't bother with unless you have an oil consumption issue.
I'd also think about doing rear gear oil at around 50k, and brake fluid flushes every 2 years. Now would also be a good time to check the condition of the belts.
