4l80e p1870 fix One ran a diagnostics test and found a TCC slip. This is a primary cause for TCC-related slip code P1870 and overheated converters. 5. Has the transmission recently been rebuilt? 06-16-2012 #3. Blazers of this vintage all use an OBD2 scan tool and you can purchase one online for very little money. Please Sign in or create an account. The P1870 code is for a slipping component. A damaged torque converter can keep overdrive from engaging. 2 In Stock . Applying pressure to push the valve out Buy Fauful Metal New 4L60E Transmission TCC Valve Repair 1996-1999 P1870 Code Fix A74741Q: Valve Body Kits - Amazon. Replies Seek professional diagnosis and repair as soon as possible. I had recently bought the truck, so didnt know the history. How long does it take to repair OBDII code P1870 in a Chevrolet indicating transmission component slipping? The repair time can vary based on the specific cause of the issue, availability of parts, and the workload at the repair shop. It will be most noticeable during the 1-2 upshift as the computer will have to increase the pressure to work the sticking valve. 5. So far it has worked well for me. 3050 check your fluid, if its clean then you did not blow a clutch pack. Maximum line pressure will be commanded and TCC apply/torque converter See more This usually is related to wear-out of the torque-converter regulator-valve bore causing a loss of torque-converter apply pressure, allowing the Hey all 2000 Chevy K2500, 5. Check out the deal on Teckpak 4L60E P1870 Code Valve Body TCC Fix 1996-1999 Automatic Transmission at Oregon Performance Transmission P1870: Transmission Component Slipping: GM Transmission: P2715: Pressure Control Solenoid D Stuck On: Dealers were instructed to inspect the transmission oil cooler line connection and repair the vehicles, as needed, free of charge. 26. Drivetrain Find many great new & used options and get the best deals for 4l60e TCC Valve P1870 Code Fix 1996 to 2000 Fitzall Teckpak USA GM Chevy GMC at the best online prices at eBay! Free shipping for many products! GMC Savana 2500 HD Transmission Models. In GM 4L60-E, 4L65-E and 4L70-E units, severe wear of the TCC regulator valve bore is caused by oscillation of the OE valve allows regulated converter apply pressure to exhaust. This is an common problem with the 4L60 trans, you can search this forum on P1870 and you'll find lots of info. 50 $ 21. Function: Upgrade and fix P1870 code 7 . It has 140,000 miles on it and shifts hard from 1st to 2nd. & T76378V) Write Your Own Review. Write Your Own Review. GM released TSB 01-07-023A to address this issue and how to P1870 CODE FIX for (1996-99) GM 4L60E. R. You can hear the crowd murmuring "fix it". So, staking the valve fully in remediates that problem by applying full line pressure when the tcc lockup solenoid seals. I found the cause of my low line pressure. TW97. 2005 & 2006 had a few vehicles with CANbus computer systems. My symptoms are almost identical to the OP's. If this procedureis tried just by dropping the valve In most cases this is an easy fix without a rebuild or new valve body. I This is a small clip from a full rebuild video showing you what to look for and attend to in the rebuilding process of a 4L60E Transmission. Could be a torque converter, TCC solenoid valve in valve body. This kit allows repair to the commonly worn PWM valve and bore - without special tools! Save a bundle over the cost of a new plate. shift + alt + z I have 150,000 miles on my 97 GMC 4L60e trans. If it doesn't and your scan tool confirms p1870 is in fact storing due to the converter clutch slipping or falling out of lock up, it's time to pull the transmission/TC for overhaul or replacement. If other methods fail to identify the root cause of the P1870 code, a computer diagnosis may be necessary to analyze data from multiple sensors and components to pinpoint the issue. Brand: Transmaxx. Fixes the P 1870 code. My old S10 got to the point that it would chirp the tires every time it shifted 1-2. 2 out of 5 stars 17 ratings | Search this page . P1870 CODE FIX for GM 4L60E (1996-99) Change the filter while you are in there. 2. This Item. Gallery. DTC P1870 is stored as a history code. S. HELP - 4L80-E won't lockup, then looses 4th gear entirely. 2. Exhausting apply pressure also diminishes line pressure, which can result in burnt clutches. Torque Converter Repair. item #: a74741q: tcc valve p1870 code fix for your 96-99 4l60e Slips out of overdrive once warm and converter will not lock up at anytime. Please follow this diagnosis process thoroughly and complete each step. *Please Note: May Not Work For All 2000 Models, Please Make Sure If You Have A 2000 That Your Valve Body Has This Type Valve In It. If the problem is not corrected, it could lead to further damage to the transmission. 4L60E 4L65E New Fitzall A74741QA TCC Valve P1870 Code Fix For Your 2000-2003 Transmission. If I drive it hard on the highway, the next time I take off from a stop it will BANG the 1-2 shift. Chevrolet Suburban 4L80E Problem: Harsh shifts, delayed 2-3 shifts, 2-3 shift flare, no 3rd gear, slips Description: This 00 chev 1500 series truck with a 4L60 transmission. Condition: New. Some repairs can be completed in a few hours, while more extensive repairs may take a day or more to complete. TCC valve? How hard is that to replace for an amateur like myself. Have one to sell? Sell now. the only real down side is you will The cause of the code p1870 is the valve not properly shifting in the bore and binding according to pressure supplied by the tcc pwm solenoid hydraulic circuit. Specifically, the code indicates that the transmission is slipping, which Fixing Code P1870: Simple Steps To Resolve Transmission Slippage. Condition/Concern: 2000 - 2001 light duty trucks, vans and utilities equipped with the 4L80E automatic transmission may experience a harsh TCC apply and/or a Teckpak A74741QA TCC Valve Repair Instruction Sheet Fixes: P1870 Code and sloppy lockup condition. THIS KIT WILL SOLVE AND CURE THE P1870 TCC FAULT CODE ON GM 4L60E AUTOMATIC TRANSMISSIONS. will replacing the control valve body fix this problem too? I replaced the TCC valve last week on the beast. What repairs can fix the code? The following are solutions that may fix this problem: Repair or replace any wiring that is damaged A Harsh 1-2 Shift or DTC P1870, Caused by Wear in the "CONTROL VALVE BODY ", may be difficult to duplicate when the transmission temperature is below 93°C (200°F). Valve To Fix Worn Valve Body With P1870 Code This Is A Brand New Fitzall A74741CB Made In U. If I end up doing the fix, and I suspect I will, I'll try to post a small write up for the next guy. and surge every few seconds untill i either speed up or let off the accelerator. 95 . A quick fix for this is to lock the PWM valve into full pressure position (via inserting a spring in the bore), and getting on/off TCC engagement If you catch this code soon enough, which is about the time when you feel hard shifting from first to second gear, the fix is relatively easy and inexpensive. Remove the valve plug from the bore. 4. Applicable Model: TCC valve repair upgrade replacement is used to fix P1870 CODE in 4L60E TRANSMISSIONS 1995‑2000. The torque converter transfers engine power to the transmission. $39. Trans shifts great no problems felt at all fluid looks good filter recently changed. Electronics; Cables; Filler Tubes; Misc. There's a sonnax reaming/sleeve/valve you can have a trans shop do for less than $100. Support Details for TCC VALVE FIX for P1870 CODE: Back: SKU #: A74741QA • Purchase This Item: TCC VALVE P1870 CODE FIX FOR 1996 - 2006 with OBDII Computer. Last year, it was showing a P1870 code which is component slippage. The 4L80-E transmission uses the P0741 for 3rd gear TCC slip, and P1870 for 4th gear TCC slip. I will bet a code scan of the truck shows a P1870, there is a kit to fix this problem with your transmission. In the video I said the early transmission was a 1995, it was a 1997. I bought the TransGo SK 4L60E valve body repair kit. 90 percent of the time, it sets when the PCM detects a slip in the torque converter. if it is out for torque Some transmissions use both the P0741 and P1870. Remove the clip that holds the TCC Valve in place. Yes the kit and reamer would fix it as well, but not near I have a 2001 Silverado 1500 4. The PCM must recognize that a DTC P1870 has set in two consecutive key cycles to illuminate the MIL. GM uses code “P0742 TCC Stuck On” when the computer detects the TCC has not released. If you haven't had the code long enough for the sticking valve to wear out the clutches you can but a tool to fix the valve body and Fixes: P1870 Code and sloppy lockup condition. Common complaints are TCC slip or shudder, codes P1870 and P0894, harsh 1-2 shift, double bump shifts, 2-3 flare-up, burnt 3-4 clutch plates as well as inconsistent pressure boost problems. 50 New 4L60E Fitzall A74741Q TCC Valve P1870 Code Fix For Your 1996 Thru 2000* Transmission. Bought it with 126k on orig 4L60E and immediatly had the trans flushed even though the fluid looked fine. Documents: Instruction Sheet How to Replace the TCC Valve without Removing the Valve Body Diagnostic trouble code P1870 (Transmission Component Slippage) is a General Motors-specific code whose set parameters are determined by transmission type and engine size. Sep 11, 2023. However I will say thay in my experience if your slip rpm's are more than 600 and it has done this for quite some time the torque converter lining is probably glazed too bad for a 100% fix without replacement. Your transmission shop will have to buy a special drill bit/jig to perform this work, costs them about $100. BigBlue95; Jan 4, 2025; Transmissions; 2. it fixed my problem for a few months then the code showed up again. There are a LOT of different parts/etc. Common complaints on this transmission are TCC slip or shudder, code P1870 or P0894, harsh 1-2 shift, double bump shifts, 2-3 flare up, burnt 3-4 clutch plates as well as inconsistent About this item . We pulled over, read the codes and it was the infamous P1870. WARNING: California’s Proposition 65 . I show how to verify the failure, some electrical diagnostic 4L80E w/ P1870 code; 4L80E w/ P1870 code. I have parked the truck for now and need to know what I should do to fix it. This Is A Brand New Fitzall A74741CB is Made In USA. 4L60E 4L65E 1996-06 1870 P1870 Code Correction Update Kit With TransGo SK4L60E This Shift Correction Kit from TransGo will improve all 4L60E Transmissions from 1993-2006. 4L60e, 65e, 70e converter failure. P1870 is a TCC slip code and almost always is a result of a worn TCC regulator bore. Normal slip is supposed to be. The Importance of Resetting the P1870 Repair Code. I'm complaining a little because the videos I watch showing how to do the replacement didn't mention having Got a P1870 in your '96? The downside of that fix was that now the torque converter becomes pressurized with transmission line pressure, which can go as high as 250psi at times. getting code P1870. $167. M '97 National Dolphin MH on Chevy P30 4L80-E Problems. But We have seen a P1870 code from the band slipping also. posted 17 years ago. View Profile View Forum Posts Private Message Potential Tuner Long story short make sure to push the old valve out with a screwdriver as hard as you can while you pry the clip up. So, this code popped up a couple times over the last week. If your Blazer throws the P1870 code while you are driving, it is very important you pull over, allow the transmission to cool down, and use a scan tool to reset the code. • When the P1870 code is stored, the PCM will turn on the Service Engine Soon (SES), Check Engine Light (CEL), or Malfunction Indicator Lamp (MIL). if you drop the pan to replace 1 then do all 4. Show/hide shortcuts, shift, alt, z. Diagnostic ApproachActionYesNoAttempt to duplicate DTC P1870. Here is a list of P1870 related bulletins and the diagnostic from the 97 Service Manual. " - Sherlock9c1 Better Injectors for LT1s 4L60E Valvebody and Pump Rebuilding 4L60E Rebuild tips and recommendations Transmission rebuilds and mechanical restorations on a limited basis, based in north Alabama. uzjkcctuuuogsjefudmawenqilyacopdnfahgobrwyzxonyjytolpewwxjxxyqbcqrtoyzcfpw