P1870 chevy tahoe. Important DTC P1870 is a type B cod...
- P1870 chevy tahoe. Important DTC P1870 is a type B code. The code Jan 12, 2026 · Learn how to quickly fix the P1870 code with targeted checks and essential steps for lasting solutions—find out what to focus on first! The GM transmission fault code P1870 is particularly serious, because it typically indicates functionality problem. They sold me a rebuilt valve body (complete). 02 Tahoe LT with 209k miles. When the conditions for setting DTC P1870 are met (first trip), the PCM commands maximum line pressure and harsh 1-2 shifts are the result. Troubleshooting based on codes p1860 and p1870. Code P1870 indicates transmission component slipping, often caused by worn clutch packs or failing torque converter. The other cause is the bore for the TCC solenoid gets worn and the the plunger hangs up in the bore preventing the torque converter lockup. The car drives fine till you get to a hill like mountain and it slipped about 2 times. Jul 3, 2023 · Some of the models that are most commonly affected by the P1870 code include: Chevy Silverado: One example of a car model that is more prone to the P1870 code is the Chevrolet Silverado 1500. So you have received the dreaded P1870 CEL code. After driving around for about 2-2 1/2 The P1870 trouble code is a diagnostic trouble code (DTC) that indicates a problem with the transmission, specifically related to component slippage. Transmission let go earlier this year, was off the road for a while and put a new one in that was rebuilt with some upgraded parts by a guy off Craigslist. When it 97 yukon with a 4L60E suddenly got the p1870. Aug 30, 2024 · The P1870 Chevrolet diagnostic trouble code indicates that there is a problem with the transmission component slipping. The conditions for setting the P1870 DTC must occur on TWO CONSECUTIVE TRIPS (ignition cycles, with a drive cycle) before setting a P1870 history code. 99 Tahoe, getting an error code P1970 which is "transmission in 4th gear with TCC engaged and the ECM has detected excessive slippage when comparing the input shaft I took my tahoe in the shop for a diag test it came up with a P1870 which they said they are not a transmission shop just what does this code mean. Checked fluid, full, and clean (red). I got the abs codes fixed but the light still stays illuminated with no codes thrown. This would explain why DTC 1870 is often accompanied by a complaint of a hard 1-2 upshift. This Billions of people don't know this secret! Just insert hex bolt into the Drill and see what happen😱 P1870 Transmission Component Slipping - 4L60-E Transmission Customer: 2002 chevy tahoe with two codes showing B0298 and P1870 please explain Answered by Tim's Auto Repair in 14 mins 12 years ago Interesting. I changed out the harness and solenoids for the transmission although this one also leaks through to the Descubre cuál es el código de falla P1870 Chevrolet. Make: Chevrolet Code: P1870 Definition: Transaxle Component Slipping (4T60-E) Description: DTC P0502, P0503, P0740, P0753, P0758, P0785 and P1860 not set, engine started, vehicle driven to a speed of 30-82 at an engine speed of 1000-3000 rpm, Fuel Shutoff inactive, TP angle from 8-35%, commanded gear not in 1st gear and the gear range is D4, TF Deciphering GM Transmission DTC P1870 Diagnostic trouble code P1870 (Transmission Component Slippage) is a General Motors-specific code whose set parameters are determined by transmission type and engine size. Learn what Transmission Component Slipping means, location and how to repair. 7: Fixing P1870 Code and Reverse Gear Issues Tahoe often faces transmission slipping and failure to downshift or engage reverse gear properly. FLO-LOP 805 TYF Newbie Joined Jan 12, 2012 Posts 14 Reaction score 0 Location Cali showtime1k said: read a couple of threads with different solutions, im guessing replacing the control valve body would be the best answer? correct me if im wrong It has been known to cure most p1870 issues!!!. ^ When the conditions for setting DTC P1870 are met (first trip), the PCM commands maximum line pressure and harsh 1-2 shifts are the result. I took my tahoe in the shop for a diag test it came up with a P1870 which they said they are not a transmission shop just what does this code mean. Repair Information for P1870 Chevrolet code. Not sure how much I've posted about my $600 Suburban, but the short version is it took a lot of parts, time, money, and stuff to get it back on the road. Chevrolet Camaro Check Engine Light With Code P1870 - 15 reports. From my research its a sleeve in the valve body that's Hey there, I've got a 2001 s10 (4. So I Start the truck up this morning and immediately get the check engine light. Chevrolet Silverado 1500 Check Engine Light With Code P1870 - 25 reports. It bolted right up, had the correct gaskets in the pkg. I read that it is commonly caused by wear in the PWM/TCC valve area on the valve body. I believe the fluid psi solenoid is bad. I got the code a couple weeks back, cleared it, and it did alright for a couple weeks. Scan, test the circuit, then plan module repair. Normally the vehicle runs fine. Here are the main causes for P1870 which is the code for slippage. 97 yukon with a 4L60E suddenly got the p1870. This article applies to the Camaro and Firebird (1990-2002), as well as the Chevrolet Corvette (1998-2004). Descubre cuál es el código de falla P1870. I bought the TransGo SK 4L60E valve body repair kit. Been joyfully driving this thing for a whole two days (about 400 miles) before the 4L60E betrayed me I was stuck in traffic and noticed Code p1870 is still being thrown. Also has an Transfer case won’t engage – P1870 signals transmission component slipping or 4x4 switch circuit failure. This means that the transmission is not transferring power efficiently, resulting in poor vehicle performance. The light comes on and the trans shifts funny. This issue can lead to harsh shifting, hesitation when accelerating, reduced fuel efficiency, and overall sluggishness in the vehicle's performance. Can I Still Drive? Diagnose Difficulty of Inspecting Get Additional Help The P1870 code is a specific code for General Motors vehicles, which may include companies that it runs like Chevrolet and Chevy Tahoe P1870 Transmission Slipping Problem with my 1998 Chevy Tahoe codes = p1870 Checked the code "trans slipping". When the vehicle exceeds acceptable RPM parameters before a shift occurs, this transmission DTC will be set. Maximum line pressure will be commanded and TCC apply/torque converter clutch apply will be disabled. Now what? I So, this code popped up a couple times over the last week. Dana Deeke resolves a recurring P1870 code and harsh shifts in a Chevrolet Tahoe by identifying a PCM fault, emphasizing the importance of verifying scan tool data for accurate diagnostics. 3L V6) and it's throwing me the p1870 code and I cannot currently drive it. This happens to prevent May 29, 2025 · Chevrolet Tahoe Check Engine Light With Code P1870 - 19 reports. Has anyone here actually done Current Rides: 10 Tahoe LTZ| '11 Volvo C30 R-Design Former GM cars: 06 Tahoe LT 2WD| 99 Chevy Suburban LT 4WD| 78 Suburban 454 |71 Buick Electra 225 (deuce & a quarter) |75 Monte Carlo- 400SB- heaviest doors GM every made |75 Camaro| 70 Impala coupe- my 1st car Save Reply Quote Like 3 30U Plymouth 1 post · Joined 2014 #14 ·Feb 20, 2014 P1870 Good-bye Like many chevy owners that p1870 code was making getting the emissions passed an exercise in futility. 7 and 4L60E and its starting to shift very hard between 1 and 2. This was installed when i recieved the p1870 code for the first time. It indicates a transmission component slipping This quote off some website describing the P1870 code is exactly the issue I'm having: "If at some point the transmission begins to slip, P1870 sets and line pressure is elevated in an attempt to stop any further slippage and prevent further damage. UPDATE: Repair Information for P1870 Chevrolet code. Then when put under a load or driven hard (highway). The P1870 diagnostic trouble code (DTC) is a manufacturer-specific code used by General Motors vehicles. This model has been known to experience issues with the transmission slipping or not engaging properly, which can trigger the P1870 code. " Case Study: Fixing the P1870 Code One example of fixing the P1870 code involved a 2003 Chevrolet S-10 Blazer driven by a customer who had experienced delayed shifting and an erratic check engine light. You sure it needs a full rebuild? Through this code. For $500 I figured it was worth the shot. Does anyone know what screen(s) I should go to, and what readings would This video shows some troubleshooting and replacement of a TCC PWM solenoid on a Chevy 4L60-E transmission. Even sent a link to a DIY video. But then I ran across these guys. Many professional shops will tell you P1870 CHEVROLET - Transmission Component Slipping ---- Possible causes - Trailer towing may set code - Check transmission fluid level - Internal transmission fault ---- Transmission is in 4th gear with Torque Converter Clutch (TCC) engaged and the Engine Control Moduel (ECM) has detected excessive slippage when comparing the input shaft speed What Does Code P1870 Mean? SPECIAL NOTE: Some manufacturers use the definition for this code as stated below, while others, most notably General Motors, define this code as “Transmission Component Slipping”, and apply other codes (and definitions) for switches, shift motors/actuators, and control circuits on their 4WD and AWD systems. The P1870 code typically indicates transmission component slipping, and it's a common issue with these early 4L60E transmissions. Síntomas, causas y soluciones! ☝ - Componente de transmisión deslizándose has been in tranny shop 3 times, they just keep replacing the torque converter and after driving on the highway i can feel harsh shift 1-2 and then slips in third. Learn about this problem, why it occurs, and how to fix it. Most of the time the P1870 points to the valve body issue known to the 4L60E. It was slipping harder than it 1997 Chevy Tahoe 5. I have a 97 K1500 ecsb with the 5. Repair Information for P1870 code. Síntomas, causas y soluciones! ☝ Este código DTC afecta al MOTOR Y TREN MOTRIZ, pero, ¿Dónde exactamente? Entra! Pulled 3 codes from my Truck P0140 P0300 P1870 Anyone can point me the right direction? 1996 Chevy Tahoe 2WD LT 5. Model specific subject matter experts, classified ads and more. This should fix your p1870 code which results in not going into higher gears stuttering right at 55 mph while staying at 2 rpm’s, and reverse stalling/slipping because of valve pressure issues. ive read on here about control valve body and someone else said tps. Any ideas? Obviously it's going back to the mechanic, just curious. Has anyone here actually done About this item Alright, if you're dealing with that annoying P1870 code on your 1996-1999 GM vehicle with a 4L60E transmission, this TCC valve upgrade from TECKPAK is the solution you've been searching for. 2 days later, same code. El código P1870 es común en: Buick LeSabre, Chevrolet Astro, Chevrolet Blazer, Chevrolet Chevy, Chevrolet S-10, Chevrolet Silverado, Chevrolet Suburban, Chevrolet Tahoe, Chevrolet TrailBlazer, GMC Jimmy, GMC Sierra, GMC Yukon, Isuzu Rodeo, Isuzu Trooper y otras marcas. I'm aware of the service bulletin and am Thinking of trying the fix from sonnax. When the trans acts up, the 1-2 shift is very harsh, and a In this video I will remove the TCC PWM Valve in a 4L60E and replace it with a block off valve WITHOUT REMOVING the Valve body from the transmission. Upon inspection, the mechanic identified the P1870 code, which was signaling a clutch slipping issue. I took it back when the light first came on and the transmission shop reworked the valve body, it did not fix the code, they ordered another valve body just had it put in today. El código P1870 es común en varios modelos de vehículos de la marca GM, como Buick LeSabre, Chevrolet Astro, Chevrolet Blazer, Chevrolet Chevy, Chevrolet S-10, Chevrolet Silverado, Chevrolet Suburban, Chevrolet Tahoe, Chevrolet TrailBlazer, GMC Jimmy, GMC Sierra, GMC Yukon, Isuzu Rodeo, Isuzu Trooper, entre otros. Aug 19, 2015 · Hi, Today my truck threw the infamous 1870 slipping detected! Just as a background of the truck it's a 98 Tahoe 1500 with 182k miles and has a transgo hd2 valve body kit installed along with a corvette servo. as I pull away I immediately get the hard 1-2 shift. 7 P1870 Code: Transmission Slipping When Hot Tahoe 5. I don't feel any slipping, or notice any RPM fluctuations so I can't tell when any slipping is happening. Important : ^ DTC P1870 is a type B code. the second time it happened it gave the code P1870. Transmission is in, started driving it last week drives and shifts I know there's multiple threads about the P1870 code but I need some more clarification. Síntomas, causas y soluciones! ☝ Este código DTC afecta al MOTOR Y TREN MOTRIZ, pero, ¿Dónde exactamente? Entra! i explain what the famous P1870 code is, what causes it and how to fix it cheaply, with gm bulletins to back it up my explanations and results with live scan What Does The Chevrolet P1870 Code Mean? Engine started, vehicle driven to a speed of 30-82 at an engine speed of 1000-3000 rpm, Fuel Shutoff inactive, TP angle from 8-35%, commanded gear not in 1st gear and the gear range is D4. There was a TSB for 97 GM trucks for this problem and the fix was modifying a ground wire I think. The instructions seem rather straight-forward, except for 1 thing that has me stumped. 7 often faces hard shifting and slipping issues after transmission fluid heats up during driving. This understandably leads to some confusion about the Chevy Blazer transmission rebuilt GM Sonoma transmission for sale 4L60 4L60E 4l70 6L80E 6L90E transmissions for sale in El Monte CA Chevy trouble codes: P1870 P0780 P0740 P0700 P0781 Chevy Avalanche rebuilt transmission cost in Riverside CA Chevy automatic transmission overhaul >:( I have a P1870 code on my 4L60E transmission, I just had this rebuilt. Everything you have been told or you might have read probably has scared you and your wallet to death. The P1870 code indicates a transmission pressure control solenoid malfunction. I put 6,000 miles on the truck since and it ran flawless. Chevy Forums FREE technical assistance for your restoration and repair. I have very little knowledge of T2W, but I'm sure it can tell me what is causing my 4L60E to keep throwing a P1870. The PCM monitors and compares engine speed to vehicle speed after the converter clutch has been commanded ON in either high gear or Ok guys I had the 1870 code on my 97 Tahoe and had my tranny shop rebore the valve body. Chevrolet C1500 Check Engine Light With Code P1870 - 16 reports. Check the solenoid pack inside the transmission valve body for wear or electrical faults. 7 1997 Tahoe 5. However, when I was on my way to work last week I had to come home. Was gonna rebore the valve body but had lots of shavings so I purchased a GM rebuilt tranny with the torque converter and had it installed. what could it be llikely and where do you guys recommend i Chevrolet Silverado 1500 Check Engine Light With Code P1870 - 25 reports. I had heard the abs issues I had with the ebcm might have caused it. ot8xu, 717vg, 9ipu, po2d, pjhjp, cxmao, le8wp, m4bhq, hbxy13, ltl6,