Is Your Gmt-900 Truck Or Suv Using Oil

[Jsdirt]

Mine burns less oil if I keep my foot out of it. I can burn a quart in 300 miles towing with the cruise control on, on a hilly highway. If the truck downshifts to second and tachs out at 5k, it'll use oil like crazy. If I keep the RPMs lower on hills, I have gone almost 10k miles on a quart.

 

But, I'm sure as the truck ages, this will get worse and worse. No tune on mine aside from the one-size-fits-all Hypertech plug-in programmer I used.

 

Started using oil around 50k miles (85k on it now). Before that it never used a drop, but would puff blue out the pipes, using the remote start so I could watch. Hasn't done that since I installed the catch can.

Edited January 7, 2016 by Jsdirt

[urbancowboy]

2011 Sierra SLT 5.3, same issues as everyone else. Had many oil consumption tests done, so I called GM to complain. They called the dealer to inquire and dealer says falls with in 3200 km guidelines, then between 5-7k oil change barely touching dip stick and getting worse with every oil change. I told the lady I'm not the only one as sites filled with people having same issues. Well they should be telling their dealers the problems, Really? Most dealers brush them off as they did with me saying its normal. I asked her where my oil is going? no reply! There is an issue maybe compensate the people with problems not sweep it under the carpet. So frustrated at this point paying all that money for never ending issues. Then the dealer says come on down we can get you in a new Denali, we just need $40 k and your truck. just makes you laugh. Been a loyal gm guy buying new vehicles every 3-5 years but I'm done with gm.

[MaverickZ71]

2011 Sierra SLT 5.3, same issues as everyone else. Had many oil consumption tests done, so I called GM to complain. They called the dealer to inquire and dealer says falls with in 3200 km guidelines, then between 5-7k oil change barely touching dip stick and getting worse with every oil change. I told the lady I'm not the only one as sites filled with people having same issues. Well they should be telling their dealers the problems, Really? Most dealers brush them off as they did with me saying its normal. I asked her where my oil is going? no reply! There is an issue maybe compensate the people with problems not sweep it under the carpet. So frustrated at this point paying all that money for never ending issues. Then the dealer says come on down we can get you in a new Denali, we just need $40 k and your truck. just makes you laugh. Been a loyal gm guy buying new vehicles every 3-5 years but I'm done with gm.

 

Another loyal GM customer being driven away. Same here. Apparently the General doesn't care. They don't think they can go bankrupt again.

 

And here we were led to believe that the revised driver's side valve cover (PCV orifice) and oil deflector in the oilpan were factory installed beginning with the 2011 models. Guess not, or this proves that they were not very useful 'fixes' in the continuing AFM oil usage problem. I'm waiting for the new GM models to report they are having the same problems. Honda is having the same problem. Wonder why Dodge is not with their Hemi's MDS?

[Pinnacle]

 

Another loyal GM customer being driven away. Same here. Apparently the General doesn't care. They don't think they can go bankrupt again.

 

And here we were led to believe that the revised driver's side valve cover (PCV orifice) and oil deflector in the oilpan were factory installed beginning with the 2011 models. Guess not, or this proves that they were not very useful 'fixes' in the continuing AFM oil usage problem. I'm waiting for the new GM models to report they are having the same problems. Honda is having the same problem. Wonder why Dodge is not with their Hemi's MDS?

I've worked at Chrysler and wondered the same thing, why the Hemi which is an OHV as well doesn't have the problem. I dont remember anyone bringing it in for that issue, while at GM we had atleast one person per day bring it in.

[kevinfranklin88]

2000 Sierra 5.3l Alum Block with 180k use about 2qts of oil/ 3k mi. Run Castrol syn. got a vlv cover leak on the odd bank

[Milkdudd22]

Lm7, 230k, Quaker state advanced durability, oil nvr moves on stick

[robroy]

My 2009 Sierra (5.3 non flex Z71) has always been an oil burner. Maybe around 50K miles a GM dealer replaced the driver side valve cover, still a burner. I'm past warranty, having had nothing else done to it, and not wanting to spend more than I need to to keep this my daily driver; what would you guys recommend for me to disable the AFM? I looked at the range AFM disabler, but I was wondering, being out of warranty, is there another product that everyone would recommend first.

[Jsdirt]

I just threw a Range on mine last week. Found a great deal on eBay. Works as advertised. Haven't gone on a long towing run to see if it will cut the oil consumption I have when at sustained high RPMs.

Edited March 29, 2016 by Jsdirt

[robroy]

^ How great a deal is a great deal? I saw were range also sells on amazon for a few bucks cheaper than on their site.

[Jsdirt]

Paid $149 shipped - was cheaper than I could find anywhere else.

[hillbilly4u]

Hard to believe its been 5 yrs since I asked that this poll be set up. What's harder to believe is, this issue is still going strong. I understand brand loyalty. I have owned Chevys all my life. But, that loyalty supposed to go both ways. Without customers you have no business. The 5.3 AFM should have been dropped, instead GM is counting on customers looking the other way. I meet people every day with NB Silverados, that when I ask if they are using oil, 7 out of 10 say yes and don't know what's going on till I tell them. Me, I took advice from a member here and got rid of the problem, an 07 NB that I had to go thru hades to get fixed. My 06 non AFM Silvy uses no oil.

[Daryl LBZ]

AFM will cause problems with these engines eventually. You can't shut cylinders down, and not expect it to be harder on the engine.

[Bad Bowtie2]

^ How great a deal is a great deal? I saw were range also sells on amazon for a few bucks cheaper than on their site.

 

Also shop at "www.autoanything.com" They have free shipping & 20% off ($100 orders) deals all the time.

[robroy]

Thanks for the suggestions guys.

I spoke with the service manager at my local dealership and he was asking how often I change my oil to which I told him "when my truck tells me to (just like you told me to do when I bought the thing new)". He said "oh no, you have to change it every 3,000 miles". That seems extreme, not to mention expensive given the cost of full synthetic. Full synthetic is all that I have ran in my truck since new.

I own an agricultural business and employ a mechanic (not a GM mechanic mind you but a gear guy none the less). We got to discussing oils and he wondered aloud if the full synthetics and lite weights aren't also for EPA reasons and not so much because its a better product. My question for the forum is has anyone switched from the recommended 5W or synthetic?

[j-ten-ner]

That's what my manual says:

('13 Silverado, I guess it should be similar to the 09')

 

 

I didn't look very hard but I couldn't find anything about an oil change every 3000mls.

 

so long

j-ten-ner