How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Dan Your Own Question

Dan
Dan, Auto Technician
Category: Chevy
Satisfied Customers: 3490
Experience:  GM Mark of Excellence/ Service Guild Participant with 13 years experience, ASE Master Certified
4976144
Type Your Chevy Question Here...
Dan is online now
A new question is answered every 9 seconds

Code p1870 what can i do to fix this

Customer Question

code p1870 what can i do to fix this
Submitted: 5 years ago.
Category: Chevy
Expert:  Dan replied 5 years ago.
HiCustomer Thank you for asking your question on JustAnswer. The other Experts and I are working on your answer. By the way, it would help us to know:
-What year is your Chevy?
-What model is your Chevy?
-How many miles are on your Chevy?
-What type of engine is in your Chevy?
-What have you already tried?

Thank you again for trusting us with your problem. Please reply as soon as possible so that we can finish answering your question.
Customer: replied 5 years ago.
2000 silverado 2500 80000miles 6.0 nothing yet
Expert:  Dan replied 5 years ago.

Here are a few bulletins from GM for that trouble code if nothing can be found.

 

#PIP3047A: 00-01 4L80-E Harsh TCC Apply/DTC P1870 or P0741 - kw 4L80E apply automatic converter DTC hard harsh shift TCC torque transmission - (Sep 16, 2004)

Subject:00-01 4L80-E Harsh TCC Apply/DTC P1870 or P0741

Models:.

 


The following diagnosis might be helpful if the vehicle exhibits the symptom described in the PI.

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 DTC P1870 or possible P0741.

Recommendation/Instructions:

Now that you have completed the service diagnostics in SI with no resolution, replace the torque converter to repair the concern.

.

Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance.

Models:

(00 - 01 Chevrolet Suburban) and (00 - 01 GMC Yukon XL) and (00 - 01 Chevrolet Silverado) and (00 - 01 GMC Sierra) and (00 - 01 Chevrolet Express Van) and (00 - 01 GMC Savana Van)

#02-07-30-001G: Diagnostic Information on Diagnostic Trouble Code (DTC) P0894 and P1870 - (Mar 19, 2008)

Subject:Diagnostic Information on Diagnostic Trouble Code (DTC) P0894 and P1870

Models:2000-2002 GM Passenger Cars and Light Duty Trucks
with 4L60-E, 4L65-E or 4L70-E Automatic Transmission (RPOs M30, M32 or M70)

 


This bulletin is being revised to provide information on the turbine shaft O-ring seal. Please discard Corporate Bulletin Number 02-07-30-001F (Section 07 -- Transmission/Transaxle).


 

Diagnostic trouble codes (DTC) P0894 and P1870, Transmission Component Slipping, may have different root causes. The following diagnostic tips are provided to assist in accurately repairing the condition.

Corporate Bulletin Number 01-07-30-023B is intended for 1996-1999 vehicles with more than 32,000 km (20,000 mi). This bulletin addresses wear in the valve body TCC isolator/regulator bore, which can cause DTC P1870. This wear condition is not the cause of DTC P0894 or P1870 on any 2000 model year vehicle built after January 15, 2000, or any 2001 or newer vehicles as the valve body used on these vehicles has been revised to prevent the wear condition.
Corporate Bulletin Number 99-07-30-005 or newer should be used to help with diagnosis of these DTCs. This bulletin will help to determine if the DTC is caused by the TCC system or by a slipping internal transmission component such as a clutch or band.
Slip speeds ranging from approximately 100 to 400 RPM at steady state light load driving are usually caused by the TCC not applying.
Slip speeds greater than about 400 RPM at steady state driving are usually caused by a slipping clutch or band. Inspect the oil pan for the presence of excess clutch debris.
A plugged or restricted TCC apply fluid orifice (238, located in the pump) may cause DTC P0894 or P1870, especially in low mileage vehicles with less than 8,000 km (5,000 mi).
A converter clutch valve (224, located in the pump), which does not have full travel of 13 mm (0.5 in) or is stuck in the off position may cause DTC P0894 or P1870. Inspect the valve for chips, debris, nicks or burrs. Also, inspect the springs (225 and 226) to make sure they are not limiting valve travel. A spring that is not fully wound may catch in the bore, limit valve travel and cause DTC P0894 or P1870.
A cut, damaged or missing turbine shaft O-ring seal (615) may cause these DTCs. When installing this O-ring to the turbine shaft make sure it is fully seated on the groove all the way around the turbine shaft and can be easily rotated with the thumb and forefinger. Failure to fully seat this O-ring may result in cutting when the torque converter is installed.
A cracked or leaking TCC solenoid (part of harness 66) may cause DTC P0894 or P1870. Use solenoid test kit J 44246 to test the operation of this solenoid.
A cracked or leaking TCC PWM solenoid (396) may also cause DTC P0894 or P1870.

When attempting to diagnose a DTC P0894 or P1870, it is important to also refer to the appropriate Service Information (SI) document for further possible causes of this condition.

#01-07-30-023B: Harsh 1-2 Upshift, SES, MIL, or CEL Illuminated, DTC P1870 Set (Replace Valve Body) - (Mar 22, 2002)

Subject:Harsh 1-2 Upshift, SES, MIL, or CEL Illuminated, DTC P1870 Set (Replace Valve Body)

Models:1996 Buick Roadmaster
1996 Cadillac Fleetwood
1999-2000 Cadillac Escalade
1996-2000 Chevrolet Camaro, Corvette
1996-2000 Pontiac Firebird
1996-2000 Chevrolet and GMC Light Duty Truck Models
1996-2000 Oldsmobile Bravada
with 4L60-E Automatic Transmission (RPO M30)
Built Prior to January 15, 2000 (Julian Date 0015)

 


This bulletin is being revised to update VIN Breakpoint Date information and revise the Parts Information table. Please discard Corporate Bulletin Number 01-07-30-023A (Section 07 -- Transmission/Transaxle).


Condition

 

Some customers may comment on a harsh 1-2 upshift and the Check Engine Light or Service Engine Soon indicator is illuminated.

Diagnosis

 

Typically, these vehicles will have been driven more than 32,000 km (20,000 mi) before this condition occurs.

The scan tool may show a DTC P1870 set as a history code.

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).

Cause

 

The condition may be due to wear in the control valve body. This wear occurs in the bore that contains the TCC isolator and regulator valves, and results in poor, or no, TCC apply.

Important:

DTC P1870 is a type B code. 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.
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.
This may result in a harsh 1-2 shift with no history code if the conditions for setting the DTC required for the second trip are not met, on two consecutive trips (Ignition cycles, with a drive cycle).
When the conditions for setting the DTC are met, on the second consecutive trip, a DTC P1870 is stored as a history 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).

 

Correction

 

Install a control valve body with the revised TCC regulator and isolator valves. Refer to the Parts Information table below. These valves are used in all transmissions produced after January 15, 2000 (Julian Date 0015), and all of the service parts currently available through GMSPO contain revised TCC regulator and isolator valves.

Important: If all of the following conditions are true, it is not necessary to rebuild the transmission or to replace additional transmission components beyond the control valve body.

Transmission operation is normal before the transmission reaches operating temperature, or before DTC P1870 is set (no slips, flares, or missing gears).
The torque converter is not blue or overheated.
The transmission fluid is not burned or has no burned odor.
The transmission fluid pan contains no abnormal debris (clutch material, bronze, brass, or metal fragments).

 

Parts Information

Model Year

Vehicle Platform

Engine (RPO)

Transmission (RPO)

Transmission Broadcast Code

P/N

1996

S Truck

2.2L

(LN2)

4L60-E

(M30)

SAD

24217855

1996

C Truck

(Mexico)

5.7L

(LO5)

4L60-E

(M30)

CPD

24217856

1996

C/K Truck

G Van

5.0L

(L30)

4L60-E

(M30)

CCD, CFD, KBD, WAD, WBD

24217856

1996

C/K Truck

G Van

5.7L

(L31)

4L60-E

(M30)

CHD, CJD, KCD, CMD, CUD, KPD, YDD, FFD, WCD, WHD

24217857

1996

F Car

Y Car

5.7L

(LT1)

4L60-E

(M30)

FFD, YDD

24217857

1996

D Car

5.7L

(L31)

4L60-E

(M30)

AHD

24217857

1996

S/T Truck

M/L Van

4.3L

(L35)

4L60-E

(M30)

TBD,TAD, MSD, MDD

24217860

1996

C/K Truck

G Van

4.3L

(L35)

4L60-E

(M30)

CAD, CBD, KAD

24217861

1996

S/T Truck

4.3L

(LF6)

4L60-E

(M30)

SHD, TLD

24217862

1996

B Car

4.3L

(L99)

4L60-E

(M30)

BBD, BCD

24217863

1996

B Car

(Includes Police Pkg.)

5.7L

(LT1)

4L60-E

(M30)

BFD, BWD, BKD

24217864

1996

F Car

3.8L

(L36)

4L60-E

(M30)

FCD, FBD

24217865

1997

S Truck

2.2L

(LN2)

4L60-E

(M30)

SAD

24217866

1997

C/K Truck

G Van

4.3L

(L35)

4L60-E

(M30)

CAD, CBD, KAD

24217867

1997

S/T Truck

M/L Van

4.3L

(L35)

4.3L

(LF6)

4L60-E

(M30)

SHD, TLD, TBD, TAD, MSD, MDD

24217868

1997

C Truck

(Mexico)

5.7L

(L31)

4L60-E

(M30)

CPD

24217869

1997

C/K Truck

G Van

5.0L

(L30)

4L60-E

(M30)

CCD, CFD, KBD

24217869

1997

C/K Truck

G Van

5.7L

(L31)

4L60-E

(M30)

CJD, CHD, KCD

24217870

1997

F Car

Y Car

5.7L

(LS1)

4L60-E

(M30)

FFD, YDD

24217870

1997

F Car

3.8L

(L36)

4L60-E

(M30)

CFD, FBD

24217871

1998

C/K Truck

G Van

5.7L

(L31) 5.0L (L30)

4L60-E

(M30)

ADD, AFD, AJD, ALD, AWD, CCD, CFD, KBD, CHD, CJD, KCD

24221155

1998-2000

C/K Truck

G Van

S/T Truck

M/L Van

4.3L

(L35) 4.3L (LF6)

4L60-E

(M30)

TAD, MSD, CAD, CBD, KAD, WBD, SHD

24221154

1998-2000

S Truck

2.2L

(LN2) 2.2L (L43)

4L60-E

(M30)

SAD

24221153

1998-2000

F Car

3.8L

(L36)

4L60-E

(M30)

FBD, FCD

24221159

1998-2000

F Car

Y Car

5.7L

(LS1)

4L60-E

(M30)

FFD, YDD

24221158

1998-2000

C/K Truck

(Includes Police Pkg.) G Van

5.7L

(L31) 5.0L (L30)

4L60-E

(M30)

LHD, LSD, LUD, LPD, KXD, CPD

24221161

1999-2000

C/K Truck

4.8L

(LR4)

4L60-E

(M30)

CCD, CFD, KBD

24221162

1999-2000

C/K Truck

5.3L

(LM7)

4L60-E

(M30)

CJD, CHD, KCD

24221162

Parts are currently available from GMSPO.

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money. Todd L Rochester NY
< Last | Next >
  • I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money. Todd L Rochester NY
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • Tim's Auto Repair

    mechanic

    Satisfied Customers:

    7641
    Have owned a repair shop for 25 yrs.
< Last | Next >
  • http://ww2.justanswer.com/uploads/TI/tim37857/2011-10-28_23053_S6301814.64x64.JPG Tim's Auto Repair's Avatar

    Tim's Auto Repair

    mechanic

    Satisfied Customers:

    7641
    Have owned a repair shop for 25 yrs.
  • http://ww2.justanswer.com/uploads/DT/dt69nova/2012-6-15_234154_pic1.64x64.jpg Dave Nova's Avatar

    Dave Nova

    Chevrolet Technician

    Satisfied Customers:

    6870
    ASE Master Certification. GM World Class Certification
  • http://ww2.justanswer.com/uploads/ggrote1/2009-06-27_031011_me.jpg Gary's Avatar

    Gary

    Chevy Technician

    Satisfied Customers:

    5404
    15 years GM master tech
  • http://ww2.justanswer.com/uploads/testedtuff/2009-09-26_170108_pictures.jpg John's Avatar

    John

    Master A.S.E Automotive technician

    Satisfied Customers:

    4071
    A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician
  • http://ww2.justanswer.com/uploads/RO/rodcuda/2011-7-25_224114_Donhoff1.64x64.JPG Neal's Avatar

    Neal

    Chevy Mechanic

    Satisfied Customers:

    2306
    Shop Owner and Mechanic on multiple makes.
  • http://ww2.justanswer.com/uploads/goodwrench9124/2008-11-09_220838_dscf0007.jpg goodwrench9124's Avatar

    goodwrench9124

    ASE Certified Technician

    Satisfied Customers:

    2041
    Ase Master Certified, GM Master Certified Tech. Awarded GM Top performer, Hybrid certified
  • http://ww2.justanswer.com/uploads/DR/drivefast1971/2012-1-12_172422_0009051tQKh.64x64.jpg Ron Z.'s Avatar

    Ron Z.

    - Chevy Tech -

    Satisfied Customers:

    1912
    18+yrs experience. State Inspector and Chevy Diagnostics