May 31, 2023 · 802 posts · Joined 2023. #1 · May 31, 2023 (Edited) Hi All, I'm brand new here but active on other GM forums where the 6L transmissions are actively being discussed so figured I'd start a similar all-encompassing transmission thread with videos, links and other information as it relates to the 6L80/90 transmissions.Immediate cooler fill. Immediate accurate fluid level check without warm-up cycle. Reduced average operating temperatures. Increased ATF life. Reduced risk of overheating. Reduced risk of planetary damage. Circle D Transmission offers the STL010 6L80/90 2014 & Up Sure-Cool system to customers in Houston and nationwide. Contact us today.But the 6L80 transmission was developed from the ground up as an electric-over-hydraulic transmission, complete with microprocessor control. The manufacture of the 6L80 began in 2005 and was released in most GM vehicles in the model year of 2006. The transmission lasted until 2016, available in 6L80 vs 6L90 versions. 6L90 TransmissionA better upgrade is replacing the factory 190°F thermal bypass valve, TBV, with the new available lower temp 158°F TBV instead of modifying the 190°F thermostat. TBV Part Number 86774933, stamped with “70”. 2008 Sprinter 2500 170 - camper van. 2001 Suburban LT 2WD, 5.3, V8 311,000 miles, leaks oil now at rear main seal.Before the change, I hadn't checked what the operating temps were, but during a 700 mile road trip I was averaging about 120-130 degrees for the first half of the trip, which seemed normal. However, on the second half of the trip my temp dropped as low as 111 degrees. I know lowering your temps is good, but is this too much.6L80/90 technical information. Pressure test port: passenger’s side behind bell housing. Pressure test specifications, have transmission full of fluid and warmed to operating temperatures, Use scan tool to command EPC solenoid for test. Without scan tool you will have approximately 45-80 psi at idle and upwards of 300 in gear atThe U.S. is closing its airspace to Russian operators, following suit after a slew of allies did the same in the past 3 days. The U.S. is closing its airspace to Russian operators,...Here are the most common symptoms of an overheating transmission: 1. Slipping. Slipping is a condition that occurs when the transmission revs higher than intended as the internal components fail to lock down on one another. An overheating transmission is the most common reason why a transmission will slip. 2.Oct 13, 2010 · 4L80E Transmission Temp. I have a 2003 Chevy 1500HD with 3.73 gears in it. When I bought the truck the transmission was out of it. I took it to transmission specialist (Everybody recomended in two states) and had it rebuilt. I do a lot of in town driving and when it is above 90 degrees it runs between 190 and 200 with the AC on.As a general guideline, the normal operating temperature for the Silverado 1500 is typically between 180°F (82°C) and 220°F (104°C). Real-World Observations from Silverado 1500 Owners: While the manufacturer's recommendations serve as a reliable starting point, it's also helpful to consider the experiences of other Silverado 1500 owners.Since the CEL came on the first step is to get any stored codes read, usually done for free at parts stores such as Autozone. Then post the codes here, format is P0123. As far as the temperature, a quick search showed normal range is 195-220 degrees. I own a 2016 Chevrolet Silverado 1500 5.3L. Just yesterday I noticed my engine temperature was ...We created a detailed guide showing all the steps necessary to flush your 6L80 transmission and change the filter. This guide can also be used to do a transm...6l80 fluid temp. Thread starter potvingpr1; Start date Aug 6, 2019; Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission. Aug 6, 2019 #1 potvingpr1 TYF Newbie. Joined Mar 22, 2015 Posts 96R80 Performance Rebuild (Exedy Stage 2 Clutch & Steel Kit): Rated Up To 1200 RWHP. Circle D Transmission can transform your 6R80 into a performance beast. Our custom modifications set us apart from the competition and have paved the way for us as the industry leader in the 6R80. The majority of the vehicles that we upgrade or rebuild with a ...Jan 14, 2022 · video explains how a transmission thermostat delete works** Codemansauto DIY Tools ** 1. transgo cooler bypass https://amzn.to/3TKEU9q or2. ...6L80 Level 3, 4-5-6 CLUTCH KIT: 7 G3® Clutches 9 Lindered Steels (varying thicknesses) 1 Stepped Apply Plate 1 Wide Backing Plate ... rated for 25,000 GVW. The ideal operating temperature for this transmission is 180°or less. These transmissions have a tendency to run very hot - the cooler will lower operating temperature and recovery time ...The General Motors 6L80-E transmissions are among the most diverse and capable transmissions of their time; being used in everything from exciting muscle cars to family SUV's. In this Drivetrain 101, we'll analyze all of its most prolific problems, solutions and upgrades. Become a 6L80-E transmission expert now!The 6L80E transmission has no external solenoids to replace so disregard that cause when you read it on other forums. The valve body has two pieces, upper and lower and is held together with a series of bolts that are metric. Between the two pieces is a "plate" that allows fluid to move between the upper and lower parts of the valve body.If you have found this video helpful, and you wish to donate to me, follow this link!! its easy!!https://paypal.me/aaronhinesauto?locale.x=en_USFollow this c...Mine heats up to 220 when idle, then shoots back down to around 205-210 - when driving - the car is losing coolant somewhere too, I think it might be around the water pump. I don't know if it is normal, but that's the temp for my car! If you know it's losing coolant, get it fixed ASAP. 250 or more and I'd start to get concerned.6L45, 6L50, 6L80 / 6L80-E, 6L90 / 6L90-E, 8L45 / 8L45-E, 8L90 / 8L90-E, 10L80 / 10L80-E, 10L90 / 10L90-E • Note: Has not been verified to fit Allison 10L1000 transmissions (RPO ... Maximum Operating Temperature 302 °F (150 °C) Minimum Operating Temperature -22 °F (-30 °C) Maximum Operating Pressure 300 psi (20.68 bar) DimensionsYou get warnings in the 260s and shuts you down at 270. The fluid can handle even more. That being said you're fine just keep changing the fluid every 36-45K miles, not 100K, and sooner if she gets hot while towing. It's cheap insurance to a long life. 2009 GMC Yukon XL SLT 5.3 K5L - 2012 GMC Sierra SLT 6.2 NHT - 2013 GMC Sierra SLT 6.2 GAT.6L80 shifting adjustments. So my tune is working really well. Just cannot for the life of me get it to shift the way it should under very light throttle on the 2-3 and 5-6. If I take off and keep constant or heavier throttle, shifts nice and firm, like I want. If I accelerate and then let off or change the throttle percentage, it will almost ...You'll need to use TCM OS 24270599 from a 2014-16 6l80e so the TCM can communicate with your 2014 ECM. In 2017 GM switched to an E92A and used a new TCM OS for 2017+ T43 TCMs. I've ran into similar issues when we tried using a new TCM with an older E92 ECM and vice versa. You can reprogram the TCM with an Older OS but you'll …Buy Superior 6L80 6L90 8L90 Sure Cool System Upgrade STL010 at Walmart.com. ... • Reduced average operating temperatures by as much as 20% • Reduced risk of overheat while under load, Increased ATF life. ... Valvoline Multi-Vehicle High Temperature Red Grease 1 LB Tub. Add. $14.32.Step 4 - Get the transmission fluid temperature to the proper range. The proper temperature is not so important when draining; however, when filling and checking the level, it must be in the correct operating range of 86 and 122 degrees Fahrenheit. Figure 4. Your transmission fluid needs to be in the proper range, so it is accurately refilled.The transmission temp does not matter for that one. 2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy. If you don't post your tune and logs when you have questions you aren't helping yourself. 04-18-2021 #3. tompitomas. View Profile View Forum Posts Private Message ...By looking at your info, you drive a 2018 GM 2500HD. If the tune is stock.more than likely the converter starts to lock up just before it shift in second gear.Like most late model trucks with the 6L80/6L90 especially 2014 and newer.To confirm 100%,the tune would need to be downloaded by HP Tuners or other performance software so that the settings can be seen.This manual covers all Tempest,Lemans and GTO motors. One more interesting note is found in the 65 owners guide and says normal operating temp should be 180 or above . If gauge reads 245 take immediate action to find the cause. The following are the items I changed or added with little or no effect 1) high flow 180 thermostat 2) high flow water ...Give your engine max protection and unlock extra power by maintaining proper oil temp. For a dual-purpose car, engine oil needs to be at least 220 degrees F to burn off all the deposits and ...Here is my DIY for replacing the temp sensor harness on the transmission (common on the 8L90). It came up as code P0711. it was causing hard shifts when... Forums. New ... you buttoned up the fill hole and checked fluid level while trans was at operating temp. Right? Thanks! Reactions: XSELLR8. Mar 11, 2020 #5 OP . OP. XSELLR8 TYF Newbie ...Are you looking to revamp your living space with stylish and functional furniture? Look no further than IKEA Tempe’s impressive product line. With a wide range of innovative and af...Mine runs at 175-180 ,why because I put a 160 thermostat with my fans tuned to kick on at 180 and off at 170. On a moderate temperature day, a stock engine with the stock 180° thermostat will run about 190°-200° while cruising. When you stop, so does air flow across the radiator (if a/c is not on).The General Motors 6L80-E transmissions are among the most diverse and capable transmissions of their time; being used in everything from exciting muscle cars to family SUV’s. In this Drivetrain 101, we’ll analyze all of its most prolific problems, solutions and upgrades. Become a 6L80-E transmission expert now!The process is the same for both RWD and FWD 6-speed applications, although the harness interface part numbers will vary with the application. To bench test the TEHCM: % Remove the TEHCM from the transmission or transaxle. % Attach the DT47825 test block to the TEHCM using the bolts supplied with the tool. Torque the bolts to 44 lb-in (5 Nm ...What is the difference between 6L80 and 6L90 transmission? The main difference between the 6L80 transmission and 6L90 transmission is the strength of the internal components. The 6L90 transmission case is 1-3/8” longer, which provides extra room to house two additional pinion gears (6 total).An operating temperature is the allowable temperature range of the local ambient environment at which an electrical or mechanical device operates. The device will operate effectively within a specified temperature range which varies based on the device function and application context, and ranges from the minimum operating temperature to the maximum operating temperature (or peak operating ...2 days ago · WASHINGTON, May 23 (Reuters) - Three U.S. troops suffered non-combat injuries in the effort to make a temporary pier off the coast of Gaza into a conduit for …Automatic Transmission Assemblies Adaptation Model:Fits all 2014-up 6L80/90 AND,Now fits 8L80/90E 2016-up,also fits 10L90.Replace OE# STL010. Cool System Upgrade Function: Cooler flow bypass valve kit can reduce the average operating temperature by up to 20%, reducing the risk of overheating of the loadPart number is 86774933I picked mine up from here: https://www.gmpartsstore.com/oem-parts/gm-f-s-valve-86774933150. Your TCM OS is to new. You'll need to use TCM OS 24270599 from a 2014-16 6l80e so the TCM can communicate with your 2014 ECM. In 2017 GM switched to an E92A and used a new TCM OS for 2017+ T43 TCMs. I've ran into similar issues when we tried using a new TCM with an older E92 ECM and vice versa. You can reprogram the TCM with an Older OS ...This upgrade is a game-changer for anyone with a 2014-up 6L80/90E or 2016-up 8L80/90E transmission. The installation process was straightforward, and the immediate difference in performance was noticeable. The most impressive aspect is the significant reduction in operating temperatures - by as much as 20%.Timing problems with clutch apply or with combined clutch apply and clutch release can create all kinds of complaints from flared shifts to harsh shifts to a slight bind up or a tire-screeching bind up on a shift transition. No transmission is immune from timing-related shift complaints, but this article will focus on the Ford 6R80 and 6R140.6L80 / 6L80-E; 6L90 / 6L90-E; 8L45 / 8L45-E; 8L90 / 8L90-E; 10L80 / 10L80-E; ... Maximum Operating Temperature 302°F (150°C) Inlet Port Size-6AN O-Ring Boss Female Outlet Port Size-6AN O-Ring Boss Female Maximum Operating Pressure 300 psi (20.68 bar) Max Recommended Flow Rate Up to 5 GPM (19 LPM)May 5, 2021 · 6l80 overheating after motor swap. Hi I have a 12 Sierra turbo 5.3 just swapped motor and before motor swap trans would stay 150-180 now after 15 mins of driving it will go to 220 and if converter locks it will go down but if it?s unlocked it just keeps rising dosent slip or anything. 05-04-2021 #2. kevin87turbot.All 6L80/90's are torque base shifted units. The torque signal is calculated thru the ECM. ... The ideal operating temperature for this transmission is 180°or less. These transmissions have a tendency to run very hot - the cooler will lower operating temperature and recovery time which in turn will extend the life of your transmission.This is the ATSG 6L80 Shop manual. ... POSITION, FLUID TEMP AND VEHICLE SPEED. ... to maintain shift quality and torque converter clutch apply quality over the entire operating temperature range ...Thermostat Stuck Open - Far and away, the most typical cause for the P0128 code is a thermostat that is stuck open. When a thermostat is stuck open, it allows coolant to flow through the engine at all times. When this happens, the engine is "over-cooled" and never reaches the proper operating temperature.transmission fluid level if you have been driving: • When outside temperatures are above 90°F (32°C). • At high speed for quite a while. • In heavy traffic - especially in hot weather. • While pulling a trailer. To get the right reading, the fluid should be at normal. operating temperature, which is 180°F to 200°F.Sep 23, 2014 · Problem #1. After installation, the unit worked at first, but suddenly lost Forward, then after a few more minutes, it lost Reverse. The Service Fast Learn (SFL) process with the scanner would abort halfway through the process. When the unit was disassembled, it was discovered the 1-2- 3-4 clutch retaining ring had popped out of its …3.6L coolant temp normal vs overheat. I'm preparing to do the first maintenance coolant flush in my car and was thinking it was running hotter than normal greeting close to 200° but I never actually paid attention to what normal running temperature was. I went for a long drive yesterday keeping an eye on the temp screen and hottest it got was ...All 6L80/90's are torque base shifted units. The torque signal is calculated thru the ECM. ... The ideal operating temperature for this transmission is 180°or less. These transmissions have a tendency to run very hot - the cooler will lower operating temperature and recovery time which in turn will extend the life of your transmission.Nov 16, 2014 · And that makes no sense at all. I just want to know why they are doing this differently now. 2014 Blue Granite Silverado LTZ 4x4 Crew. HP Tuners DOD,TM, Limiters deleted, Airraid Jr CAI, Kooks 1 7/8" headers, 3.42 G80 12 Bolt 9.5, Bilstein 5100's. 6L80e PML Pan and Bypass Delete, "HP Catch Can". Angry Old Salt.video explains how a transmission thermostat delete works** Codemansauto DIY Tools ** 1. transgo cooler bypass https://amzn.to/3TKEU9q or2. ...Thermostat Stuck Open - Far and away, the most typical cause for the P0128 code is a thermostat that is stuck open. When a thermostat is stuck open, it allows coolant to flow through the engine at all times. When this happens, the engine is "over-cooled" and never reaches the proper operating temperature.6L80 Minimum Trans Temp pre-Burnout. On my '12 GS drag car I was running the 6L80 with a B&M Hi Tech trans cooler in series with the cooler in the DeWitt's radiator. I could never keep the trans temps down where I wanted them. At the suggestion of my tuner I bypassed the radiator and added a Setrag stacked plate cooler in series with the B&M.Nov 2, 2016 · • When outside temperatures are above 90°F (32°C). • At high speed for quite a while. • In heavy traffic - especially in hot weather. • While pulling a trailer. To get the right reading, the fluid should be at normal operating temperature, which is 180°F to 200°F (82°C to 93°C)6L80 MYC Automatic Transmission Built in the Silao Mexico Plant 2 Note: Please refer to SI document 2610129. The following information only applies to ... These concerns may only be present when the transmission is at operating temperature. Recommendations / Instructions These concerns may be due to loose stator support to pump cover bolts ...Possible tranny slip 6L80E. I am not sure what is going on really. It acts like the tranny is slipping when in 6th gear, but it only seems to do this when going up an incline (slight load on engine) and more so when it is cold. All other gears seem to be fine, and the tranny is operating at normal temp. Does this sound like the tranny or maybe ...Hi. I have been researching the procedure for checking the transmission oil level on my 2018 GMC Sierra 1500 with 8L90 Transmission. I found a service document that says if the transmission is equipped with a Thermal Bypass valve, than the proper procedure for fluid level check is to heat transmission to 194 F and then let it cool to the 98F -113F range to do the fluid level check using the ...The General Motors 6L80-E transmissions are among the most diverse and capable transmissions of their time; being used in everything from exciting muscle cars to family SUV’s. In this Drivetrain 101, we’ll analyze all of its most prolific problems, solutions and upgrades. Become a 6L80-E transmission expert now!The operating manual. page 239 (for 2012 JSW) says when the temp gauge is below 10 o'clock, "the engine has not reached operating temperature". Lots of ways to interpret that. Literally, it would infer not "operating" (driving) at all until the needle got to 10 o'clock, which of course is ridiculous.An internal cooler can hold a constant temperature much better then an air cooled external cooler and will warm your fluid up to operating temperature quicker in cold weather. I prefer to run both coolers, the internal to hold the temp somewhat constant and then it goes to the external to drop the temp a bit more before it returns to the trans. ...The transmission temperature has always ran between 190 and 210 when not towing. Sometimes it would get up to 232 when towing 9,000+ lbs at highway speeds in Florida, where it's flat, but hot. At around 150,000 miles, I started experiencing torque converter shudder going from 4th to 5th gear.Quick Navigation GM V8 Tuning - Transmission Top. Hey Everyone, The pieces of the puzzle: E67 ECM Service# 12678513 from a 2012 CTSV auto 6l80e from a 2017 Silverado I am working on getting my swap up and running and wanted to verify my OS compatibility. I am running an E67 ECM with OS 12653238 and a TCM with OS 24276638.According to one mechanic, the 2007 Silverado’s transmission cannot exceed 300 degrees F. The 2011 models and maybe 10 and 12 as well, should not go above 270 degrees F and definitely not above 285 degrees F. That was taken from a direct GM quote. Some dealers put the mark at 212 degrees F to be on the very safe side of things.Here are the most common causes of P0128: Thermostat Stuck Open - Far and away, the most typical cause for the P0128 code is a thermostat that is stuck open. When a thermostat is stuck open, it allows coolant to flow through the engine at all times. When this happens, the engine is "over-cooled" and never reaches the proper operating ...Getting to Know the 6L80/90E. The General Motors 6L80E and 6L90E 6-speed transmissions were introduced in the late 2005 General Motors truck line as a successor to the 4L60E and 4L80E. It features clutch-to-clutch shifting. The 6L80/90E transmission consists of five clutch sets (1234, 35R, 456, 26 and LR), a planetary set, and a low clutch ...Let's kick off a new series! Probably looking at 7 videos (8 if you count this one) where I go over everything I know about tuning this transmission!Link to ...Verify engine is idling at 0% throttle. Verify transmission fluid temperature (TFT) is between 86°F and 122°F. Shift transmission through entire range – hold in each range for at least three (3) seconds. When complete, shift vehicle back into PARK. Remove Fill Plug.Mar 27, 2021 · Boat, trailer, motor, etc. weigh about 2400 lbs. My question is about the safe trans temp. Last trip I noticed it ran around 175-190 degrees. At one time ... I find your statement about hardening of seals and such hard to believe given the conditions that GM knows these trucks operate under. I think there have been ...When functioning smoothly, these pressure switches are a huge benefit to shift quality. Unfortunately these pressure switches have a significant failure rate, and have previously required the purchase of a new TEHCM for repair. Typically when a pressure switch fails, one or more of the following DTC's will set: P0752, P0872, P0877 and/or P0989.The adapter's built-in thermostat automatically bypasses the transmission cooler until the fluid reaches operating temperature. The thermostat reduces rough shifts caused by overcooled transmission fluid, reduces wear, and improves efficiency and horsepower. ... 6L80 / 6L80-E; 6L90 / 6L90-E; 8L45 / 8L45-E; 8L90 / 8L90-E; 10L80 / 10L80-E;6L80 oil temperature, gauge and overheating V8 and V6 Transmissions / Driveline (6L80 / 6L50 / TR6060 / AY6)Buy Tektall STL010 Cooler Flow Bypass Valve Kit Compatible with G.M Transmission 6L80 6L90 2014-up & 8L80 8L90 8L90E 2016-up & 10L90 Transmission Cooling System ... Transmission cooling system upgrade kit can effectively reduce overheating the load by reduce the average operating temperature, which greatly increase the service life of ATF. ...Apr 19, 2008 · The Serv. Mgr had it all wrong, I spoke with another GM tech earlier today and he said the trans "high" operating temp (not high as in over heating, but norm high) was 190-200, and usually open hwy temps are below 185, unless using paddles.On average, the 6L80 transmission can last up to 150,000 miles or more if properly maintained. However, this number can vary depending on the vehicle's driving conditions and how well it is taken care of. For more insight, you could also check out our explainer on GM's and Chevy's 4L60E transmission problems.Buy STL010 Transmission Cooling System Upgrade Kit Fit for GM Transmission 2014-up 6L80 6L90 2016-up 8L90 8L80 8L90E, ... Average operating temperature is reduced by up to 20%, reducing the risk of overloading the load, increasing ATF life, and you can use it with confidence.Oct 6, 2008 · Utah. Jul 23, 2018. #4. The average rule of thumb for transmission temps are 100 degrees over ambient temperature-in GM half ton trucks with the six speed transmissions. This is discussed to death on the various truck forums on the Internet. BTW-the Dex 6 has been tested up to 275 degrees. Last edited: Jul 23, 2018.6L80E/6L90E Performance Transmissions Upgrade. If you are looking to get the most of your vehicle with 6L80E /6L90E transmissions and considering a major trans upgrade, Gearstar has the best products available on the market. Our high-performance transmissions —including GM 6L80 (level 1 and 2) and GL90 — are built to the horsepower, torque ...6L80 Transmission Rebuild Kit is designed with 45-tooth 4-5-6 clutch plates. CDT's Billet 4-5-6 clutch hub and intermediate shaft (CDT part number 104680-45) is included in this kit. ... rated for 25,000 GVW. The ideal operating temperature for this transmission is 180°or less. These transmissions have a tendency to run very hot - the cooler ...In today’s fast-paced world, finding reliable day laborers for short-term projects can be a challenge. This is where day labor temp agencies come in. These agencies specialize in c...Superior's STL010 6L80E 6L90E SURE-COOL Cooler System is a recommended upgraded during any rebuild or as preventative maintenance to any HD GM truck or motorhome. Easy to install, save yourself or your customer thousands of dollars down the line. Toggle menu (844) 298-6404May 24, 2016 · When outside temperatures are above 32°C (90°F).. At high speed for quite a while.. In heavy traffic-especially in hot weather.. While pulling a trailer. To get the right reading, the fluid should be at normal operating temperature, which is 82°C to 93°C (180°F to 200°F). Get the vehicle warmed up by driving about 24 km (15 miles) whenThe synthetic fluid will not breakdown over 250F but the rubber valve seals and apply piston seals get very hard and shrink due to high temps and they fail to seal and begin leaking fluid under pressure causing shifting issues. I shoot for max of 190F on trans fluid temp esp when towing.In states that have made driving while talking on a hand-held cell phone illegal, the use of a BlueParrott headset makes it possible to use your phone while driving. By Lee Nichols...The 6L80, on the other hand, has a first gear ratio of 4.03, a second gear ratio of 2.36, a third gear ratio of 1.53, a fourth gear ratio of 1.15, a fifth gear ratio of 0.85, and a sixth gear ratio of 0.67. This means that the 6L80 transmission has a wider range of gear ratios, which allows for better acceleration and fuel economy.. I really need to know the normal operating temperature for my 2010 SFail case 2: +129 deg C <= trans fluid temp 6l80e slamming into gear when temp reaches 180. ... Its fairly common for transmission issues to come up once the trans is hot. I know that 180 is within operating temps but it's seems high for normal driving conditions this time of year even if you don't live in a very cold area. During the dead of summer mine barley gets over 170 and if I'm ...He replaced it with a Moveras transmission, 15k miles later and no trouble, the only thing that concerns me is the tranny temp. Going 80 mph itll go to 210, then go down to 208, then 206, and 204. 70-75 mph its 203-204. Just concerns me cause the old tranny never went above 195. He did replace the trans cooler when he replaced the tranny. Sep 13, 2017 · 17960 posts · Joined 20 October 20, 2022. The transmission fluid temperature of some 6L80 6-speed automatic transmissions (RPO MYC) and 6L90 6-speed automatic transmissions (RPO MYD) may be too hot under some operating conditions. Affected models include 2014-2020 Tahoe, Suburban, Yukon; 2014-2021 Silverado 1500, Silverado 2500HD/3500HD, Express, Sierra 1500, Sierra ...A better upgrade is replacing the factory 190°F thermal bypass valve, TBV, with the new available lower temp 158°F TBV instead of modifying the 190°F thermostat. TBV Part Number 86774933, stamped with “70”. 2008 Sprinter 2500 170 - camper van. 2001 Suburban LT 2WD, 5.3, V8 311,000 miles, leaks oil now at rear main seal. May 9, 2019 · 6L80 (RPO MYC) ... ·The transm...
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