Sign up for FREE! Become a GM-Trucks.com Member Today!
In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs. From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience.
I replaced all ball joints on my 1999 GMC Sierra Z71 days ago. I ensured they were greased, and they all went in fairly easy. However, I have noticed the steering is noticeably tighter going down the road after this was done to the truck. I would describe the steering as stiff and much less responsive due to this tight feel, and because it is so tight it will not naturally rotate back to center after a turn. It tries to but the steering is just too tight. I figured I probably tightened the upper control arm before I tightened the lower but I went back and reassessed that. It did help a bit but it still about the same. If my memory serves me right, I can remember before I assembled everything back before I tightened the upper control arm and the tie rod, it moved freely and easily with just the bottom ball joint tightened down but when everything else was on it, it was near impossible to make the wheels turn in and out by hand, even with the wheel unlocked and on jack stands. I been continuously researching about this, and I've seen it to be a common issue but I can't figure out exactly why without everyone contradicting one another on other various forums. I did get both the bottom and upper control arms really tight with a wrench. that might be where I messed up because I know a castle nut isn't exactly meant to be extremely tight but then again, I don't know if that would have any effect on this issue. I'm thinking it might have something to do with the sequence or how I put the upper control arm back down in. Anyone experience this?
All parts came off 2017 Silverado LTZ 4x4 with 15K miles. Located in Los Angeles.
Would prefer local pick-up but will ship if buyer pays for shipping.
Front strut assembly with 2.5 in Motofab leveling kit installed (Pair) - $150 obo
OE Rear Shocks (Pair) - $75 obo
OE Front Knuckles (Pair) - $75 obo
I was looking at calibrations for my 2015 GMC Yukon Denali's ESCM (Z95) and noticed there's a listing but the calibration ID's are not sequential and the latest one it recommends is a lower numerical value than the one that may fix an issue I have. Is this normal? Any explanation for the ordering? I posted this in the K2XX forum but this one appears more appropriate so sorry for the spam. I believe I have the original calibration and think 23452750 may fix my issue. Does the "current"/top one include all the fixes in the below or are they all different and you pick the one that addresses your issue? I won't be applying this, likely taking to the dealer and just want to be informed.
Anyone familiar with GM Calibrations and their numbering? I'm having some rough ride issues on my 2015 GMC Yukon Denali w/Z95 and looked up the calibrations and there appears to be one that may address my issue. But I also noticed the calibration history on TIS doesn't seem sequential and the "current" calibration offered is not sequentially higher than the one to "reduce suspension shake" Are the numbers usually somewhat random like this or did they revert to an old calibration due to issues with the higher sequential numbered ones? TIS Site for those not familiar - https://tis2web.service.gm.com/tis2web/
Sorry for the long post. This has been a headache to try and find “factual” information on instead of “opinions”.
I have a 2019 Silverado work truck V-6 , 6 speed, with 3:42 gearing. I have a stock suspension. The 2019 work truck comes with three tire options From factory.
1. 17" 255/70R17 all-season, blackwall tires (my current tire)
2. 17" 265/65R17 all-terrain, blackwall tires
3. 17" LT265/70R17C all-terrain, blackwall tires
the Silverado Custom (with the same 3:42 gearing) comes with the following tire opens.
1.20” 275/60R20 all-season, blackwall tires
2. 20”275/60R20SL all-terrain, blackwall tires
3. 22” 275/50R22SL all-season, blackwall tires
My current truck has the 17” 255/70R17 all seasons. I love my truck, but I absolutely hate these tires/wheels. They look like baby wheels on a big truck. Way too much fender well free space. Looks like the truck missed “leg day“.
My question is if I purchase the OEM wheels and tires for the custom, is there any issue with them fitting my work truck? As far as I know both trucks have the exact same suspension, body clearance, control arms, wheel well clearance, etc.
I was looking at going with the 20”275/60R20SL all-terrain, blackwall tires.
The only changes that I could forsee that would happen are the following...
1. An increase in wheel diameter of current 31.1” increasing to 33”.
2.a width increase from 10” to 10.8”
3. A sidewall decrease from 7” to 6.5”
4. A revs/mile decrease from 650 to 612 (affecting speedometer speed by .058%)
5. A new effective gear ratio of 3.22:1
6. A change in tire run pressure from 35psi to 32psi. (Annoyingly setting of my TPMS “low pressure” alarm )
1.will these custom tires fit my work truck? I can’t Find any reason that they won’t
2. Will the dealer reprogram my speedometer for the percentage difference, and replacard/reprogram my ECM with the new psi setting to 32psi. (Not sure if they will since the Vin number of my truck does not include these tire size as “options“.) I really don’t want my low pressure alarm going off 24/7.
3. Will I noticed the change in new affective gear ratio from 3.42, to 3.22? (I’m assuming I won’t since it is the exact same gearing/tire size as the custom.
Man, there sure is a lot to changing a tire size. Almost doesn’t even seem worth the trouble. Am I going down a bad rabbit hole?
Just an FYI, I am not interested in lift kits, aftermarket speedometer programmers, etc. . Would like to stick OEM as much as possible.
Recently Browsing 0 members
No registered users viewing this page.
Most OnlineNewest Member
Who's Online 19 Members, 1 Anonymous, 1,445 Guests (See full list)