Crowd-Sourced Maintenance Schedule

xtitan1

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Joined
Jun 5, 2013
Posts
467
Guys, I really wanted to write an article that is the end-all be-all on a maintenance schedule for our vehicles. The end-user would be someone who is not necessarily a car-guy, someone who has a stock vehicle, stock fluids and filters, and someone who drives under normal conditions (i.e. no racing or off-roading etc.).

The schedule in the back of the manual is outdated (my dealer doesn't even offer Maintenance I or II packages anymore), and never addressed everything anyway. I was thinking of dividing it up into 3 different categories: miles, time, as-needed. The manual only covers the first two, but things like "when your car is idling rough with the AC on" should also be included. As soon as anyone of the 3 categories' condition for that service is met, that service should be performed, and then the miles and time should be considered "reset".

I need your guys' help though, since this obviously a controversial subject and any one person's opinion is probably not going to match up, so we need to get as large a sample size as possible. We are considering this to be a stock vehicle and any aftermarket upgrades the reader should be advised to use the manufacturer's instructions over what it says in this schedule. I know that people are going to say, "there's no one BEST way to maintain your vehicle" and I understand what you're saying, but the kind of person this is written for is someone who doesn't have enough knowledge to make their own decisions about maintenance. We ought to be able to come up with a schedule that covers everything someone would reasonably need to take care of in order to keep the car in good running condition and avoid more expensive repairs in the future or unnecessary wear on the vehicle.

I have included a google doc spreadsheet of what is covered in the manual. However, this is just what was in my Chevy 4.2L I6 manual. I'm not sure if other engines or other makes are going to differ. Would this require a separate maintenance schedule for each make, each engine, each model, or any combination of the above? Or can one schedule cover a combination of vehicles.

https://docs.google.com/spreadsheet/ccc?key=0ArSASKA6Dm6udFlZbjhEeWstYkt3NzNueXdTZjZqNEE&usp=sharing

Maybe what would be best is if people just threw out other stuff they think should belong on this list, and what is the miles/time/trigger for this maintenance. Also, if you disagree with what's written in the manual, that would be cool too.

One last note, this is not a common repairs thing, it's supposed to be what one would consider "preventative maintenance" meaning it is supposed to prevent having to do a repair in the first place. However, with the triggers thing added in, this line is getting kind of blurry. Not sure what y'all think about that. For example, if you say you should lube your doors every year, but also if they start creaking or seem like they need it, the former sounds like a preventative maintenance and the latter sounds like a repair.

Anyway...


So if I wanted to add some:


Code:
[B]Miles: [/B]
[B]Time: [/B]
[B]Other Trigger: [/B]
[B]Service: [/B]




Miles: N/A
Time: N/A
Other Trigger: You notice that the car is idling rough with the AC on
Service: Clean throttle body

Miles:
Time: 1 year since last
Other Trigger: Trim/weatherstripping/door gaskets appear dry or cracking
Service: Treat trim/weatherstripping/door gaskets with rubber protectant.

Miles: N/A
Time: N/A
Other Trigger: You are performing any maintenance involving removal of the front grill
Service: Use a small brush to clear off any debris that has become lodged in the front of your radiator

Miles: N/A
Time: N/A
Other Trigger: Bulb in headlight or taillight out
Service: Replace all bulbs in the headlight or taillight "while you're there" since they were all put in at the same time and will soon be failing as well

Miles:
Time:1 month since last
Other Trigger:
Service: Start the vehicle and run for 30 minutes, preferably even being taken for a drive at highway speeds

Miles: N/A
Time: 1 month since last
Other Trigger: tires look deflated, tread wear pattern is heavier in the center than the sides, or vice-versa
Service: Check air pressure and replace if necessary

Miles: 3,000 since last
Time: 3 months since last
Other Trigger: About to embark on a long trip
Service: Check oil, check tire pressure, check washer fluid, check coolant

Miles: N/A
Time: N/A
Other Trigger: Doors creak
Service: ????I tried white lithium grease inside the grommet where the ball bearings are and it did jack, couldn't find additional advice besides replace the bearings, which obviously is what this service item is trying to prevent from being necessary
 
every 3k miles
change eng oil & filter
check tire pressure (do not trust the remote monitors if equipped)

check ps fluid level
check brake fluid level
inspect serp belt


every 15k miles:
change air filter
rotate tires
wax the paint (or at least every 6 months)



every 30k miles
flush power steering fluid 2x
change front and rear differential oil


every 50k miles
change serpentine belt
change transmission fluid (drop pan and change filter every other or every 100k)
flush coolant and refill with 50/50 dexcool and distilled water
change transfercase fluid
change spark plugs & clean throttle body (most practical if the resenator is already removed)

every 100k miles
change thermostat
replace upper radiator hose

misc:
full brake system bleed when brakes replaces (80-90k typically)
full brake system bleed 1/2 way between brake jobs

Seasonal:
drop the spare and wash the sand off every spring. check it's air pressure while is is down.
lube all door and hatch gasket with amrorall or equivalent every fall
oil the lock and hood latch every fall

get a 4 wheel alignment with each set of new tires. These trucks ar heavy and go out of alignment over time.

replace the battery every 5 years

every 150k miles
water pump?
alternator?
ball joints?
rear shocks?
front struts?


I've owned 2 envoys and driven a both a combined 270k miles. I typed this quickly so please feel free to comment.
 
tom1999d said:
every 3k miles
change eng oil & filter
A lot of people (myself included) will argue this one.

Tom, an admirable project, but it can produce a lot of confusion and argument.
And, because of "opinions" like the one above for example, the owner is better served using what ever document GM produces. If the schedule in the owner's manual is out of date, GM must have an updated schedule.

Car & Vehicle Maintenance Schedules, Owner's Manuals | Certified Service

GM Canada Owner Centre - Owner Resources - Maintenance Schedule

As you seem to be concerned more about when to clean things like the tb, perhaps a trouble shooting guide would serve us better?

Just my :twocents:
 
Tom: thanks for that awesome post. I am updating the copy I am working on with your ideas. You had a lot of things on there that I didn't even think of.

RayVoy: Your points about maintenance recommendations being controversial are well-taken. I definitely knew this was going to come up, but instead of avoiding them, I thought it would be good to embrace them. I have been working on this project for a while and have already written some stuff in a rough draft that addresses your points. I will copy it here since I think it's a good conversation to have.

Definition

Maintenance Schedules are a planned list of when to perform preventative maintenance procedures to that ensure that the vehicle continues to run in good condition and not break down prematurely. Every vehicle needs to have preventative maintenance in order to keep running. Each manufacturer has done extensive testing on various parts of your vehicle to determine what type of maintenance is necessary to keep the car running as long as possible. It is important that your vehicle gets serviced as the manufacturer states. Failure to do so may save money in the short run, but always ends up costing more money in the long run. These maintenance procedures aren't busy work, they are ways of stopping very expensive breakdowns before they happen.

Having pooled our knowledge at GMTNation, we now know of other preventative measures that the manufacturer left out. Because we are a community and can share our experiences and explore them with great interest, we have developed our own sense of what types of problems tend to creep up, why they do, and how to fix them. Read on to make sure you are doing everything you need to do to keep your GMT 360 running great.

Why not just let the dealership keep track of it?

Chances are that since you are on this website, you’re the type of person who likes to be well informed. Many of the members here have been able to keep their vehicles in great shape past 200,000 miles by taking care of their vehicle. Leaving it to your dealership (often referred to on this website as “stealerships,” tend to have a number of issues:

  • They Tend to Overcharge: It’s said that many dealerships actually make more money on the service side of their business than actually selling cars. If you just have your dealership do all the work, you aren’t making sure that you’re not overpaying.
  • Being Uninformed Leaves You Vulnerable to Service Managers Looking to Take Advantage of You: If you don’t pay attention to what your needs and what it doesn’t need, you may be easily up-sold on something you don’t need or pay for unnecessary maintenance. After all, how are you to know whether that brake flush is necessary if you don’t even know what a brake flush is? If you aren’t up-to-date on the latest Technical Service Bulletins or Recalls, the dealership usually will not bring it up on their own.
  • They Might Not Be Keeping Track of What Is Being Done: Most dealerships will be able to see a service history of what THEY have done to your vehicle, but that doesn’t mean they know what the old dealership that you used to get the car serviced at has done. You want to make sure you are keeping track of your maintenance done. If you want to have the dealership perform the service, that’s fine, but make sure you keep a copy of the work they did and put it in its own file in that safe keeping filing cabinet or shoe box. It will help let you know whether they are trying to sell you on maintenance that you just had done the year before or not, and although it won’t be an official record like a CarFax, it may be appreciated by potential buyers when it comes time to sell your car if you have a maintenance history for the vehicle.

Why not just go by the schedule in the manual?

The maintenance schedule that came with our vehicles is a great start, but it’s not really oriented towards the DIYer, and doesn’t cover all of the preventative maintenance that some would consider worth doing. As with any subjective topic, there will be people who will disagree with whether a particular maintenance item is necessary, or which brand of replacement part or fluid is really best. However, you can never go wrong doing at least what is in the back of the manual. I haven’t checked with other brand model 360s, but my 2006 Trailblazer is listed mostly in terms of whether you need what Chevrolet refers to as “Maintenance I” or “Maintenance II” service. They define what exactly is entailed in each and have a somewhat complicated schedule to figure out when it’s time for which.

However, Chevrolet, or at least the Chevy dealership near me, no longer uses that model, instead offering miles based schedules at 15k/40k/60k/reset (meaning after 60k pretend like your odometer reset to 0 and after 15k miles, which now would be 75k, go and get the 15k mile service). When I asked the service manager about it, he said they hadn’t done it that way for years. So you are less concerned with what they are calling it and more concerned with making sure they are doing what needs done (or, not doing what doesn’t need to be done, which unethical mechanics may do because they get more money the more work they do) which requires you to be on top of things!

Finally, the manual may be out of date. As the model comes in with problems that weren't originally identified, service centers may come up with new maintenance items to adress those problems. These of course will not be reflected in the manual.

Manufacturer online maintenance schedules

It may be that the manufacturer has an online version of the service schedule available that will be more up-to-date. There are many factors that affect what would be considered necessary maintenance. These maintenance schedules are guessing roughly that the average driver is putting 15,000 miles a year on their car, so they plan the schedule accordingly, mostly using mileage as the determining factor for when something should be done. However, what, as was the case with my TB, I don't drive it that regularly, but I still leave it out in the elements that go through extreme temperatures both hot and cold? I still don't have 50,000 miles on my car and it’s 7 years old. Not all wear and tear on a vehicle is due only to miles on the road. Things get old and dry out over time. GM recommends I have the engine cooling system service performed despite not having 50,000 miles, the normal maintenance interval for this service, because it has been more than 5 years.

One last thing to note is that GM has tried to make this as objective as possible (as opposed to subjective). If your vehicle has X amount of miles or Y years of age, then it requires Z maintenance. However, there are things that may require maintenance earlier than what is called for in the schedule, if called for at all. Sometimes a driver may realize a maintenance or repair is necessary just by being informed as to what to look out for, or listen for, or feel for, or smell for (I have yet to find any diagnostic use in tasting your car, but I will let you know if I do). These can be clues that a certain maintenance needs to be done, and often may lead to a costly repair if ignored.

GMT crowd-sourced maintenance schedule

GMTNation members have come up with a maintenance schedule that, for the most part, we can all agree on. This maintenance schedule differs from the manufacturer's schedule in that it accounts for common issues and problems that the manufacturer's schedule does not. Also, it includes preventative maintenance schedules for issues that come up on an "as-needed" basis.

[/hr]

Now is when I would go into the maintenance schedule.

I think it would be best to actually divide up the schedule by categorizing it in three groups based on what diagnostic criteria you should use. That way, you don’t have to play these “if-this, then-that” games that can be confusing in the manual. These schedules are based on stock rides. If you have modified your ride or added aftermarket parts, make sure to pay attention to any instructions that came along with the parts and adjust this schedule accordingly. The same goes for using non-stock fluids (the fluids that the dealership would use, usually AC-Delco unless otherwise specified by the manual).

MILES BASED MAINTENANCE (every 50,000 miles since last performed, flush your coolant)

TIME BASED MAINTENANCE (every 5 years since last performed, flush your coolant)

"CLUE-BASED" MAINTENANCE (your car shakes a little more than it used to when you are idling and have the AC on, clean throttle-body)



^^Now maybe this isn't the best way to do it. It's just an idea of a way to organize it that I'm throwing out there. I think a way to handle a controversial subject, such as when to change your oil, is to narrow down the various opinions as much as possible, and if there ends up being a battle between die-hard groups like "synthetic is better" vs. "it makes no difference" we can just include both opinions in that section and perhaps a link to further reading on the subject. It will be up to the reader whether they want to spend the extra time and money doing something that may potentially be overkill, or if they want to just risk it since other people don't be seeming to have a problem, or if they want to research it further and make up their own mind.

The idea is to have the information we have gleaned from years of debate and sharing pooled, collected, and organized, so it is most easily accessed and put into use.
 
just for inputs sake I

change oil every 6k
rotate tires
lube the all the chassis comp. upper and lower BJ, tie rod ends, front and rear sway bar links(all mine are aftermarkets w greese zerks
check and top off all fluids
including front and rear diffs( only takes a few min each to check)
check the belt
tire wear


kinda overkill but hey im tryin to make up for lack of maint from PO
I got this at 130000 and its at 180000 now so im ready for some maint soon just have to gather the stuff

I have changed the transfer case fluid but haven't again yet

I am planning on a tranny fluid change, cooler install, soon and will change the front and rear diffs again then as well as the above stated things
like a complete go over

even thinking ov a remote spin on filter kit with a section of clear line (so I can see color) for the tranny as well as a drain in the stock pan
and then adding a pan drain and filter change to the schedual somewhere
 
xtitan1 said:
T
RayVoy: Your points about maintenance recommendations being controversial are well-taken. I definitely knew this was going to come up, but instead of avoiding them, I thought it would be good to embrace them..
Hey titan (sorry, I called you Tom, in my previous post), your really passionate about this. I say great :thumbsup:. Let's do it.
 

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