Crobinson16

Consern? Oh yeah that's right, no trouble shooting needed , everything has a sensor. Give me a break. Any sensor or electrical device can read incorrectly or not accurate parameters and not set a SES, letting the system think it's operating correctly. If the given parameters are met and the shutters don't open then yes a light would be set, but if it doesn't tell the shutters to open because it doesn't provide a correct reading, then no it's not going to set a light.

It's also controlled by an ambint air temp sensor, and if the shutters stay closed the engine temp is going to rise. I tried everything to see if they would open, now I can't check it when I'm driving. But I turned the AC on full bore , put it in drive , set the p-break and still couldn't see them open. Fact I've never seen them open wether running at idle or parked shut off.

Under normal driving conditions, readings ecm are 215-225, and under acceleration to pass someone or go up an incline 225-230. Temps rise with engine rpms not putting load on motor

I have a 2017 and driven other 17s 6.2 as well. There is a post about it, titled New Sierra 6.2, someone else posted about it and I posted to it as well

I did use a scanner to read temps at the ecm.

I'd like to know if there is an operations check or system check that I can do to see if the grill shutters are functioning properly. I'm not get a dtc or anything but this truck 2017 silverado 6.2l LTZ Crew cab has higher operating temps as in water temp and trans temp the other 6.2 I've driven. Water temp rises with slightest engine load and rpm. I'm starting to think these grill shutters are staying closed longer than needed.

Just curious as to how you made out?

Have any of you had the tsb done. 17-NA-070

Yea I figured in the 4.3% difference in miles, so in 300 miles I actually traveled 312.9.

Wow I see some " interesting " mpgs being listed, I have a 2017 cc 5.3 3.42 rears 4x4 with a 1.5 leveling kit, 275 60 20s "33" tires which are Cooper discover ht plus, weight of 43 lbs , my first tank on Factory tires, driving 50/50 city highway driving dic showed 17.1 hand calculation 15.3, all tanks after changing to Cooper 275 60 20 and leveled 1.5 one tank of 40/60 city / highway, dic showed 17.2 hand 15.4 and last tank on 25/75 city / highway shows 18.3 hand calculation of 16.75, and the real time dic showing between 19.6 and 21.4 while driving on highway are 70-75 mph . One thing is for sure that the dic is way off leading you to believe these mpg numbers. My previous truck was a 2011 6.2 cc with 3.73 gears and mpgs were pretty close to this 5.3 , I bought a 5.3 because of the increased hp in the new ecotec and supposed better fuel mileage . I will be going back to a 6.2 again once I find a good deal. I'll take added hp for nearly the same fuel mileage.

I realize it's the same, buy there is a reason gm pulled it from the 2017s, with out getting into a warranty debate, should something happen, I could just see them saying ," you put something on that was designed for a 2016 instead of 2017,

Does anyone know when they are going to offer it again? I don't see one listed for a 2017 anymore. I believe it was listed but GM took it off for some reason.

I would like to know more about the GM performance CAI for the 2017 models. It does have a different part number listed than the previous year trucks. Has anyone tested or seen the new 2017 model.

I would like to know more about the GM performance CAI for the 2017 models. It does have a different part number listed than the previous year trucks. Has anyone tested or seen the new 2017 model.