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4l60e wont shift into 2nd unless take foot off gas - 95 4l60e not shifting past 2nd. 1,230. Asked by Jeremiah Sep 24, 2017 at 05:4

Doublecheck by using the pressure gauge and watch for a big drop when t

Sep 19, 2008 · A road test and check out with the scanner should take about 1/2 hour. If the valve body needs to be inspected that should be about a 2 to 2 1/2 hour job, as the oil pan and filter need to be removed to access the valve body. Solenoids about the same or a little less. Going into would cause a bind-up if this is the case, Unless the sprag missing. 2)You could be dealing with a forward piston issue. Since these pistons are bonded, and it worked before, its unlikely, unless the sealing ring on the input shaft was cut, then over-run oil would charge both pistons in the second range.Jan 10, 2021 · A second common 4L60E transmission problem that you will find in some GM cars is the inability to shift into second gear or move into the reverse position. A broken drive shell typically causes this malfunctioning of the gearbox. The drive shell is part of the planetary gear system, working together with the ring gear to lower the drum and ... HUF Discussion starter · #4 · Mar 8, 2010. sven914 said: The 4L60E is electronically controlled. When you shift into Manual 2nd, the 2-3 shift solenoid engages, by ECM request. The symptoms of a bad shift solenoid are harsh down-shifts, delayed up-shifts, and "Neutral Driving" in 3rd or 2nd gear.Step 2 - Check for transmission codes. Turn the truck off and look at the instrument panel. Keep your OBD II code reader handy. If the O/D light is flashing, go to the O/D light diagnostic. If you're getting a trans fault error, pull codes with your reader to see what is wrong. If you have no lights, move on to step 2.Jan 24, 2011 · There is a simple way to check if its tune related or mechanically related. Log or watch "Current Gear" if you see it change from 1-2 or 2-3 etc and it doesnt shift then its mechanical. If you never see the computer command the shift then its tune related. Reply. Dec 6, 2017 · 4. 1-2 shift is delayed and harsh, may not shift into OD: TPS needs to be checked for smooth and linear electrical response over the entire range of motion. If not, this must be replaced. 5. Trans does not upshift out of first, speedometer reads zero at all times: Could be VSS failure. Rear of transmission needs to be fixed. If the PCM does not say "shift into 2nd" until you let off the gas ... something is wrong outside the transmission (TPS, Speed sensor, etc). Actually the speed sensor is inside the 4L60E, but you get the idea.The 4l60e transmission has two separate shift solenoids, one for 1-2 and the other for 2-3 shifts. These solenoids are responsible for controlling the flow of fluid through the transmission during upshifts and downshifts when commanded by the computer. When these components start to fail, they can cause a variety of issues such as slipping ...Sorry again. I have a 2001 camaro with A4 4L60E transmission. After installing my last tuning something went wrong with my trans!! it will smoothly shifts 1-2, 2-3 and 3-4 but it will not downshift 2-1/3-2. Manually it will but in D mode it wont. I re-installed the stock file but no changes happened.What would cause a 4L60E to not shift? If you're experiencing a 1-2 shift failure on your 4L60E transmission, it is likely due to a malfunctioning throttle position sensor (TPS). To test the sensor, you must check for a smooth and linear electrical response over its range of motion. However, if an accurate assessment cannot be made through this ...1. Remove tune and rewrite back to stock. 2. Use bluecats software for gear and tire change ( speed is reading correct in scanner) 3. Used scanner while engine off to control both 1-2 and 2-3 solenoids ( you can here both click so i assume wiring is good) Attached Files. 11-16 no shift.hpl (203.7 KB, 11 views)HUF Discussion starter · #4 · Mar 8, 2010. sven914 said: The 4L60E is electronically controlled. When you shift into Manual 2nd, the 2-3 shift solenoid engages, by ECM request. The symptoms of a bad shift solenoid are harsh down-shifts, delayed up-shifts, and "Neutral Driving" in 3rd or 2nd gear.Either the 4L60E is getting the command to shift, but it doesn't (i.e. -something is wrong inside the 4L60E like a shift solenoid), or the PCM is not telling the 4L60E it needs to shift, which can happen if the PCM is getting bad data from the TPS or speed sensor.... wont shift until about 3000 rpm or at 2500 if i let off the gas, but when it shifts it jumps to third and dogs down, and when i try to get after it, it will tryNov 30, 2008 · Transmission wont shift into 3rd gear. I have a 1999 GMC Suburban 1500 with the 2wd and the 4l60 E transmission never seems to shift into 3rd gear. In drive it doesnt want to shift into 2nd and just slips out of gear at about 30mph. If I place the gearshift selector manually into 2 it drives without slipping but maxs out at about 40mph. Chevy transmission won’t go into 3rd or 4th gear – This indicates that 3 or 4 gear clutches are worn. Transmission grinding noise – sun shells (planetary gears) may be damaged. Chevy will drive in 1st, and 3rd only but not 2nd or 4th gear – Sunshell may be damaged, or splines are sheared off, servo seals may be worked out, and bands …12-20-2016 #1 blue86 Potential Tuner Join Date Dec 2016 Posts 5 4l60E reverse, 1-3 only and only shifts when let off gas.No new codes have set since I cleared them yesterday. When driving at around 30 mph with the trans in second, when I floor it and it downshifts to first, it will actually throw you back into the seat. :) It accelerates strong all the way to about 5000 rpm with a nice clean shift to second. I can even chirp the tires on take off.107 satisfied customers. Chevrolet Tahoe Z71: I have a 2003 Chevy Tahoe Z71, 5.3L, 4WD. I have a 2003 Chevy Tahoe Z71, 5.3L, 4WD 150K- Mods include K&N cold Air Induction, Air Raid Throttle body spacer. My issue (I believe) is with ….Truck : Silverado MY 2003 4WD 5.3 V8 90 000 Miles Here is my problem, The truck don't want to shift into 2nd unless I go up to 4000 rpm in first and let off the gas pedal, ... -In Drive, 1st engaged, no sleeping, at full throttle engine hit the rev limit and transmission won't shift, shifts only when let off the gas. Same thing in 4HI or 4LO.May 1, 2010 · dodgetech2875. 4,490 satisfied customers. 1995 Dodge Dakota: wont start..park..neutral..automatic transmission. 1995 Dodge Dakota extended cab 3.9L sometimes hard to start, sometimes won't start in park only neutral, worse when warm out and once running … read more. Need some help .have 4x4 tahoe 1996 transmisson wont shift to 2nd unless i have it right at 3ooo rpm and let off gas.also have no overdrive isnt sliping in any gears and pulls just fine .i have been reading up on this site about the 4l60e trans troubleshooting a few guys said to change the 1-2 shift sensor did that afew guys said to change t.p.s did that has fresh fluid and filter in it all ...Today my 2004 serria wont shift into 3rd or overdrive. ... 1994 Chevy blazer k10 transmission get hung in 1st gear have to let off gas and coach into second then runs great.changed ... Transmission problem. check engine light came on suddenly seamed to not shift into 2nd. instead rev up to 3500rpm then 3rd. at the shop I got a 753a code shift ...By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you ... My 4L60e transmission won't shift into 2nd gear ... and two days ago while leaving a stop light the transmission went into neutral while shifting from 1st to 2nd i let off the gas and it shifted into second ...T. Transmech · #3 · Sep 20, 2017. Taking off in 3rd gear, with no shifts either up or down, can sometimes be traced back to NO POWER getting to the trans. For simplicity, unplug the transmission connector. Turn ignition to "RUN" position. Now probe the power feed wire in the electrical connector and verify you are getting 12 volts.SOURCE: 4L60E Shifts fine in 1st, 2nd, & 3rd but will not shift into OD The EMC detected and problem so it's in limp mode, As long as it's in limp mode the 4th and OD will not activate. Take care not to burn up the transmission by running it hard while your in the limp mode. Your going to have to get the truck scanned to clear any codes and why there are …As the world continues to shift towards cleaner and more sustainable energy sources, electric vehicles (EVs) have become increasingly popular. With this rise in popularity, the demand for electric charging points has also grown.When your electronic throttle body (ETB) has a worn or broken dial, communications may be disrupted between the electronic throttle body and transmission control module (TCM), causing a missed shift, no shift at all, or skipping gears (e.g. 2nd to 4th without hitting 3rd). Faulty transmission control module (TCM).Turn off your vehicle’s engine and wait for 5 to 10 seconds. Start the engine and let it idle for a few seconds. Turn off the ignition and wait for another 30 to 40 seconds. To reset your vehicle’s transmission control module, repeat these steps 2 to 3 times.PSDForever Discussion starter · #11 · Sep 21, 2007. Mark, I did not try shifting from 2nd to "D" since once I got it engaged in 2nd by letting off the fuel pedal, it then shifted correctly from 2nd to 3rd and into overdrive ok. Shifting from 1st to 2nd gear manually on the column had no effect. The tranny stays in 1st gear till I reved the ...The car will not shift gears while accelerating -- it will reach very very high RPM's -- until I remove my foot from the accelerator. The only exception to this is that the car does switch from 1-2 (i.e. the first two gears when accelerating) while my foot is on the accelerator; however, even this shift is coming late, and the revs are getting ...Try checking out the video I recently made. I'm having the problem where my transmission will not shift at WOT 1-2 and I go through the possible solutions. I cover the different years of each car, what controls the shifting, tuning and pressure as well as shift kits. And give a great link in the description to the top 30 problems with the 4L60E.I have a 2005 chevy truck 1500 4x4 with a 5.3 auto the tranny will not shift out of first gear unless you let of the gas pedle and then it will shift in to second and every other gear okay. it shifts … read moreWon't shift out of 2 up or down. Starts off in 2 and stays in 2. Manually put in L1 stays in 2. The speedometer doesn't work. Transfer case output VSS has been …Feb 7, 2017 · The 1-2 shift failure on the 4L60E is often due to a faulty throttle position sensor (TPS). Test the sensor (there should be a smooth, linear electrical response over the range of motion) or substitute a known good unit. A more serious cause of 1-2 shift failure on the 4L60E is a leak in the 2nd gear apply circuit (servo assembly or 1-2 ... i have a 1994 trans am with a 4l60e turbo hydra-matic tranny, the problem im having is it wont shift from 1st to 2nd unless i romp on it, in other words after i take off, i get up to about 45 before it will shift, or unless i romp on it then it will shift into 2nd then again i have to wind it way out there before it will shift again.1995 Trans Am 4L60E shifting problem. Hello, I just started having a problem with my automatic 4 speed in my 95 Trans Am. It works perfectly fine under normal or even slightly heavy acceleration but once I hit WOT, it wont shift into 2nd gear. The rev limiter kicks in. If I ease off the gas just a hair, it will shift no problem.Shift Solenoids – Transmission solenoids are valves that control the flow of fluid throughout your transmission. A faulty shift solenoid can cause a delay of engagement into any gear. Over time the shift solenoid’s tiny plungers may fail or the electromagnetic coils fail due to constant heat and vibration. If the coils fail, the solenoid is ... BurnBlue said: This trans has a 1-2 shift solenoid that would be a cheap, quick, and easy way to start diagnosing the trans problem. Replace the solenoid first and check the harness that you will find when you remove the trans pan. If you find alot of burnt/black fluid or metal shaving inside the pan you know you have a mechanical issue.4L60E Shift Issue. Built 4l60e trans won't shift into 3rd gear at full throttle after 3.9 ratio diff change . Will change normally at part and medium throttle. Changed diff ratio and rescaled as usual, reduced shift speed and changed rpm points and still the same . Speedo is reading correct .Refuses to Go Into Gear. Check Engine Light. Transmission Noisy in Neutral. Gears Slipping. Dragging Clutch. OBD2 Trouble Codes. Get the Problem Diagnosed. Your car's transmission is a complex mechanical system that controls the application of power from the engine to the driveshaft. It experiences more wear and tear over time than most other ...97 Chevy K 1500 for will drive 5.7 L. V8 I believe it has 4L 60 E. transmission will not shift out of first. gear into second gear unless RPMs. are high and I let my foot off the gas. let it shift and then step on the gas. again and I go through all the other. gears just fine Please help I know. taking it to a shop can be costly.The 1-2 shift is harsh and delayed. Not only do 4L60E transmission owners experience a delay or harshness in 1-2 shift, but there have also been reports of an inability to shift into overdrive. The 3-4 Clutches Are Not Working and Quickly Worn Out. The 3-4 clutches are reportedly quick to wear out.Hook scanner up. Go to trans data. Turn key on, run gear shifter through all positions verifying that all gear positions are registering in scanner. This test is checking the neutral safety switch. If that tests good, then start the vehicle up, and put the shifter into the D4 …1997 chevy blazer(s-10)4l60e tranmission. shifts 1 to 2 stay in 2,coast down hill shift to 4 can downshift all gears.Minute hit gas back to 2 gear.(code p1870) help!! thanks … read more Tim's Auto RepairThere are also engine codes that mess with the transmission also. No shift past 2nd could be 3-4 clutch pack, but also torque converter, oil pump, valve body faults, Input housing faults including the 3-4 clutch, vss. Save. cahall Premium Member · #3 · Nov 17, 2012.If the TCC solenoid is not functioning properly, overdrive will not occur. * not actually a "shift". The torque converter locks up which causes engine RPM to decrease. If you have the GU6 rear axle with 3.42:1 axle ratio, at 70MPH in overdrive, engine RPM should be 2K. If it's above 2K, the converter is not locking up.Here's a list of most of the parts I replaced from my rebuild thread. Some of the parts I'm replacing include. -Sonnax Smart Shell. -New reverse input drum. -Rebuild kit from trutechtrans (includes band, pistons, seals, frictions, bushings, etc) -Sonnax second and fourth servos. -Transgo separator plate.Oct 12, 2009 · Need some help .have 4x4 tahoe 1996 transmisson wont shift to 2nd unless i have it right at 3ooo rpm and let off gas.also have no overdrive isnt sliping in any gears and pulls just fine .i have been reading up on this site about the 4l60e trans troubleshooting a few guys said to change the 1-2 shift sensor did that afew guys said to change t.p ... 1998 chevy k1500 4x4 4 speed auto.transmission wont shift out of 2nd gear. shifts fine from 1st to 2nd first and reverse is fine wont shift out of first, shift servos have been replaced. Had a similar problem with same model pickup but would shift into third only after reaching high RPM in second @5000. There was TSB that came out about this a ...While the 1-2 shift failure on the 4L60E transmission can have a variety of causes, it is most commonly attributed to a faulty throttle position sensor (TPS). In order to determine if the TPS is indeed malfunctioning, it should be tested using an ohmmeter. During this test, there should be a smooth and linear electrical response over its entire ...So iv got a 2000 chevy blazer 4x4 with a 4.3 and 4l60e that wont shift into 2nd or 4th gear. you can rev it up in 1st, let off the gas and it will go into 3. i checked the 2-4 servo, no problems there. the band is not broken, checked it out and it tightens up on the drum when i push on it. i had...Mike Butler. 6674 Answers. SOURCE: the engine dies when i put into gear 1st time but not after. Sounds like idle speed motor may need cleaning, or replace. Doesn't cost more than $5-$10 for a can of throttle body cleaner, and some time, to pull it off & clean & retry before spending too much on other areas.Either the 4L60E is getting the command to shift, but it doesn't (i.e. -something is wrong inside the 4L60E like a shift solenoid), or the PCM is not telling the 4L60E it needs to shift, which can happen if the PCM is getting bad data from the TPS or speed sensor.Apr 26, 2015 · 1NastyTransAm said: Whats up everyone I was wondering I'm having problems with my 4L60E in my 98 trans am when step on the gas peddle more then half or most of the way it will shift no problem but then when I'm punching it all the way down 1-2 shifts great then when it goes to shifting 2-3 it redlines and won't shift sometimes I let off the gas ... you should get 3 shifts - 1-2; 2-3; 3-4 - by the time you get to about 50. if you go to about 3500 rpm then let off, you can kinda force a shift. as far as what could have jarred loose: I'm assuming you have about 180K miles on it. it could be that there has been some sort of deposits over the years that got knocked loose and clogged a channel in …Wont shift out of second I have a 95 tohoe with a 4l60e trans 4x4 the seal between the trans and transfer went out tranny ran low on fluid and lost 3rd and od i didnt drive it long at all when i lost the gaers just to get off the road the trans was rebuilt about 1 3/4 yaer ago i reaplaced the seal changed the fluid and filter still dont have ...E. emar1 Discussion starter · Mar 25, 2019. 2001 f 250 7.3L 145,000 k miles. Having problems with shifting while accelerating from 1st to 2nd or 2nd to third. If I take foot off the gas it will do a hard shift into gear. The od light is blinking. The trans fluid is not smelling burnt, is still pinkish, and is the appropriate fluid level.Try checking out the video I recently made. I'm having the problem where my transmission will not shift at WOT 1-2 and I go through the possible solutions. I cover the different years of each car, what controls the shifting, tuning and pressure as well as shift kits. And give a great link in the description to the top 30 problems with the 4L60E.PSDForever Discussion starter · #11 · Sep 21, 2007. Mark, I did not try shifting from 2nd to "D" since once I got it engaged in 2nd by letting off the fuel pedal, it then shifted correctly from 2nd to 3rd and into overdrive ok. Shifting from 1st to 2nd gear manually on the column had no effect. The tranny stays in 1st gear till I reved the ...From my experience a shift after letting off the throttle is an indication of poor or low engine vacuum whether actual or via a faulty sensor. Transmission shifting is based on 3 major factors: 1- vehicle speed 2- engine vacuum 3- throttle position However there are other factors that also play into it but probably wont cause issues as bad as ...To shift into second gear, lift your foot from the gas pedal then disengage the clutch by pressing the clutch pedal to the floor. The action should be firm but not rushed. The RPM will drop and the car will slow, but only a bit. While the clutch is disengaged, move the gear stick from 1st to 2nd gear.Whatwould make a 4l60e transmission not want to shift untill you let up on it/ - Answered by a verified Chevy Mechanic ... tranny is having problems and won't shift from 1st to 2nd without going to 30+mph unless you let off the gas. ... and two days ago while leaving a stop light the transmission went into neutral while shifting from 1st to 2nd ...A 2006 Chevrolet Suburban C1500 equipped with a 5.3L V-8 gas engine and a 4L60-E transmission was brought to a transmission shop. The customer complaint was "slipping in reverse.". The vehicle had 128,967 miles on the odometer, so the customer was sold a complete rebuild, including a rebuilt torque converter.did you do the rebuild or did a shop do it? it sounds like the clutches werernt done properly. if the reverse is out the other gears will go out too if driven too far in that condition, Posted on Jan 19, 2009 Anonymous 98 Answers SOURCE: 95 chevy caprice wont shift.1. 4L60E Transmission Third Gear Problem. The most common gear issue for a 4L60E transmission is a loss of third gear. This problem typically occurs out of the blue. …2. 1-2 shift does not happen at WOT until you let off the gas: Best case: try replacing the TPS. Middle case: leak in the 2nd gear apply circuit (servo assembly or 1-2 accumulator). Doublecheck by using the pressure gauge and watch for a big drop when the PCM commands 2nd gear. Worst case: poor line pressure rise (see below).4L60E won't shift. I know this is more of a mechanical question then a tuning question, but maybe some can point me in the right direction. My 99 Z/28 with auto trans …The 1-2 shift failure on the 4L60E is often due to a faulty throttle position sensor (TPS). Test the sensor (there should be a smooth, linear electrical response over the range of motion) or substitute a known good unit. A more serious cause of 1-2 shift failure on the 4L60E is a leak in the 2nd gear apply circuit (servo assembly or 1-2 ...The 1-2 shift is harsh and delayed. Not only do 4L60E transmission owners experience a delay or harshness in 1-2 shift, but there have also been reports of an inability to shift into overdrive. The 3-4 Clutches Are Not Working and Quickly Worn Out. The 3-4 clutches are reportedly quick to wear out.The torque converter lockup helps improve the vehicle's efficiency by helping to improve gas mileage, reduce trans temps and stress, and just make for an overall better driving experience. When 4l60e converter lockup fails, there are usually a few causes, such as: Worn torque converter clutch. Bad converter seal. Bad TCC solenoid.To shift into second gear, lift your foot from the gas pedal then disengage the clutch by pressing the clutch pedal to the floor. The action should be firm but not rushed. The RPM will drop and the car will slow, but only a bit. While the clutch is disengaged, move the gear stick from 1st to 2nd gear.Mileage ? Any recent rebuild or repair , replacement? Does this trans ever upshift to 3rd gear .. then 4th gear? Explain how you have checked the solenoids.... Solenoids can check out correct for electrical operation , yet not function hydraulically. If the v-body was replaced and the same problem continues , IMHO the problem is not in the v-body.Mar 28, 2016 · The 4l60e operates off given information from VSS, TPS, MAF, etc. Similarly a 700r4, TH400 and TH350 uses a governor which by the means of swing weights is the signal used for estimating vehicle speed and the engine vacuum or throttle position indicates engine load. The answer is the 3-4 clutch pack comes into play. If your car is not hitting 3rd gear, then the 3-4 clutch pack is not applying. Either the 3-4 apply piston is not getting line pressure, or the 3-4 clutch pack is toast. Since the 4L60E (and 700R4's) are famous for 3-4 clutch pack failure, that would be my first guess.Just had my 4l60e rebuilt, 1999, sp0eedometer now off 10mph @ 50mph and above. Does it have one or 2 VSS and where is input sensor. ... 1996 blazer 4x4 with 4l60e automatic. Will not shift into 3rd gear. shifts fine in reverse, first and into 2nd and when it goes to 3rd it revs like its in neutral. no check engine light, ...The answer is the 3-4 clutch pack comes into play. If your car is not hitting 3rd gear, then the 3-4 clutch pack is not applying. Either the 3-4 apply piston is not getting line pressure, or the 3-4 clutch pack is toast. Since the 4L60E (and 700R4's) are famous for 3-4 clutch pack failure, that would be my first guess.Sep 12, 2016 · Most of the time this is caused by an internal transmission issue. If the engine is running fine and is producing the correct sensor signals then the transmission is the problem. Also, one thing that will cause this is the vehicle speed sensor. If this fails then this will occur. If you want to have this repaired, consider YourMechanic, as a ... Here is a more detailed list of why your transmission won't shift into 3rd gear: 1. Contaminated Transmission Fluid. Transmission fluid is needed to lubricate the gears and moving parts located inside. It operates much like motor oil, except it's designed specifically for the transmission.Transmission never shifted right always had to pedal into 2nd slipping. Then it progressed to can not use... in this thread in this sub-forum in the entire site. Advanced Search Cancel Login / Join. What's New; Forum Listing; ... 4L60E wont shift out of 1st dead already? 2239 Views 16 Replies 6 Participants Last post by pickupman, Jun 30, 2016.Make sure to use the drill bit per the instructions that will be the easiest way to verify the correct pin travel. This will control your 2nd and 4th gear, If you mess up you will definitely know because the gears will either slip or they will lock up. 1997 Mitsubishi Eclipse GSX. AWD · Automatic. Street Build.885. Asked by Devin Jul 28, 2008 at 01:27 AM about the 1994 GMC Sierra 1500 C1500 SLE Extended Cab SB. Question type: Maintenance & Repair. 4L60E trans. Motor wants to stall while in gear (but doesn't do it out of gear once over 1000 rpm it dosent) seem to stall and it is only from a dead stop. Fuel filter has been replaced and TBI was rebuilt ...The parts will cost you between $50 and $100 on average. The labor costs will be anywhere between $150 and $300, depending on the hourly rate of the mechanics and the amount of work it takes to access the throttle position sensor. In total, you can expect to pay between $250 and $400 for a throttle position sensor replacement.The car can also stall. Once it's bad enough, the vehicle won't move at all. Sadly, re, There are also engine codes that mess with the transmission also. No shift past 2nd could be 3-4 clutch pack, Ok I just got home from swapping out transmissions today in my tru, 95 4l60e not shifting past 2nd. 1,230. Asked by Jeremiah Sep 24, 2017 at 05:45 PM about the 1995 GMC Sierra 1, Harvey N Tawatao. 3854 Answers. SOURCE: 4l60e slips i, Step 4. Disconnect the can tool from the vehicle and start the engine. Ver, Denis Houle. cruise at steady speed no fuel pedal movement, downshift from D4 to D3 you should feel RPM raise .., Earthquakes are caused by energy released from tectonic plates s, If the computer says "shift into 2nd" and the car stay, 1994 Silverado 1500 4x4 - Shifting Problem 1st to 2nd. I have a 94, 4L60E Not Shifting into 4th Gear. Hello all. 2007 Silverado 1500 L, Hi! I have a 1994 Firebird V6. After i drove in a hole , I just ran into this problem on my 99 Tahoe with a freshly rebuil, On the dashboard, locate the tachometer, the gauge that , Ensure the e-brake is engaged and/or brake is pressed, the shift, The 1-2 shift is harsh and delayed. Not only do 4L60E transmission ow, A road test and check out with the scanner should take, redly focus on that 2-4 servo. looking at these 2 flui.