Search the Community
Showing results for tags '3.08'.
Found 5 results
-
Hey Forum, I am trying to find out what exactly my max tow rating is. First off, I have believed since I owned the truck that it had 3.73 gears. I requested the build sheet from GM and turns out I actually have 3.08 gears (RPO code GU4). I also thought I had the heavy duty tow package (RPO code Z85), but the build sheet says I have the "Trailering Package (Special)(Reese Type Hitch)" which is RPO code Z82. The sticker on the drivers side says the weight of cargo and occupants should not exceed 1577 lbs. So, 7700lbs GVWR - 1577lbs cargo capacity = 6,123lbs curb weight? According to the below site, the max towing capacity is 11,200lbs with 3.73 and max trailer tow, which is what I thought I had. With 3.08 gears and no max tow package, it is only 6,600 lbs, which is a huge difference keeping safety in mind. The guide does mention Z82 as the heavy duty package, but does not explicitly call Z82 the "Max Trailering Package". What i think is happening here is the Z82 is the Max Trailering Package on a Z71. https://my.chevrolet.com/content/dam/gmownercenter/gmna/dynamic/manuals/2014/chevrolet/Multiple Model PDFs/MY14 Trailering Guide_1113.13 - Equinox.pdf So, now that I am unsure of what exactly my tow rating is, I just want to confirm I know the correct limits of my truck. Truck: 2014 Silverado Crew Cab, LTZ Z71, Short Box RPO codes that may help: GU4: Axle, Rear, 3.08 Ratio JD9: Brake Vac Power, 17" Disc/Disc, W/VSES, 7700 LBS JL1: Control, Integrated Trailer Brake KC4: Cooling System, Engine Oil KNP: Cooling System, Transmission, Heavy Duty L83: Engine Gas, 8 CYL, 5.3L, SIDI VVT, AFM, E85 MAX, ALUM, GM MYC: Transmission Auto 6SPD, HMD, 6L-80 Z82: Trailering Package (Special)(Reese Type Hitch) Again, I have the full build sheet so just let me know if that would help you guys help me
-
What's up guys, new to the forum, i finally got around to buying a leveling kit for my 2011 silverado z71 and now I'm tire shopping. I'm probably going with the general grabber at2 275/65/18 on stock rims but I'm worried they'll look too small. I only have 3.08 gears and was thinking about 275/70/18 but I'm worried about putting too much strain on the transmission. Ive been spending way too much time trying to find pics of trucks with 275's and haven't had much luck. all i seem to find are pics of the overly popular and expensive 285/65/18 (almost all on truck with 3.42's). any opinions or pictures would be greatly appreciated. Thanks alot guys
-
I'm not sure if anyone has discussed this particular scenario, I've poured through a number of different regear posts but I haven't found anything that really answers my question. I have a '14 Silverado DC z71 I purchased in 2015 used. I got a great deal on it, only 19,000miles and looked like it had never been driven. The dealer I got it from I had known years ago, his wife used to teach me horseback riding lessons when I was a kid. He told me the truck was 3.42 as well as another guy Arbizo the dealership. It took me too long to realize it's actually 3.08 so I'm basically stuck with it. I love the truck and it tows my ~6000lb horse trailer fine but I'm looking to Regear. I just don't love how it handles some of the hills and back roads I drive with the trailer. It always makes t but I feel like it's working too hard and I want it to last a while without needing a new tranny etc. I don't plan to lift it or add bigger tires or anything like that. All I'm looking for is improved towing (I know changing my gears won't Change my tow rating I'm not looking to tow anymore I'm just looking to improve towing performance for what I tow now within the trucks capabilities). My question is should I upgrade to 3.42 or if I'm going through the trouble am I better off just going to 3.73? How will 3.73 effect my gas mileage vs 3.08? I know it's a truck and I'm not looking for crazy mileage but don't want to be going to the gas station every other day since it's my daily driver also. -
GM/Chevrolets claimed tow rating doesn't add up when crunching the numbers between the 4.3 V6 3.42 model vs the 5.3 V8 3.08 model (2014-2018). Look at the last two columns in the below chart for torque (ft./lbs.) coming out the differential towards the wheels. (These numbers do NOT account for drive train loss, at the wheel ratio changes due to various tire sizes, and the engine torque was taken as published (383 for 5.3 and 303 for 4.3 V6). The ROWS are gears 1 (top) through 6 (bottom). The formula used was: Step 1) Transmission gear ratio multiplied by Rear end gear ratio = Final Drive Ratio. Step 2) Final Drive Ratio multiplied by engine torque = TORQUE coming out of the differential to the wheels. Torque coming out of the differential and to the wheels what gives a vehicle its POWER to pull and move weight. The 5.3 with 3.08 BEATS (MORE POWER) the 4.3 with 3.42 in EVERY GEAR I understand there is more to ratings for tow capacity than just pulling power, however the 5.3 and 4.3 share the same frame, suspension, 6 speed transmission, etc. which means the only variable between the two models is the engine. Since the 5.3 with the 3.08 rear end CLEARLY has MORE torque going to the wheels than the 4.3 with the 3.42 rear end how does Chevy/GMC claim that the V6 model can tow more? The only thing I can think of is MAYBE the 4.3 runs cooler than the 5.3 so the engine is capable of sustaining high RPMs for a longer period of time...
-
I have read so many posts, and messaged a few people across two forum sites; however I am still confused about a gear change on the 2014-2018 (mostly on the 2016+) trucks. I know the parts are available, and it is possible to change the physical gears. Where I can’t seem to find an answer is about reprogramming the various separate computers. If I understand it correctly, the available programmers can ONLY reprogram the ECM for tires and gears which only fixes the speedometer, and no one can reprogram the transmission, vvs unit, or the ebcm (abs), which is why some get the abs and brake codes after gear swaps despite reprogramming the ECM. I can’t help but believe this will also have a severe negative impact on the truck’s stabilitrak system, which I want to keep working properly. Is there anyone who HAS ACTUALLY swapped their gears AND reprogramed their trucks on this site? If so, what specific components (ECM, transmission, etc.) were reprogrammed? Does your truck have any error codes including the abs/brake lights/codes? What programmer was utilized for the programming? It also appears GM changed one of their computers for 2016+ trucks so access is limited and it’s harder to get into the computer for changes?
