What causes the GM trouble code p1870 to set?
When this code sets, it could have any number of causes, ranging from the sump running low of fluid to a malfunctioning torque converter. Take a GM 4L60-E transmission, for example. When it’s in Overdrive, the forward clutch and the 3-4 clutches are applied, as well as the 2-4 band. Now add the converter clutch.
What’s the history code for DTC p1870?
……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.
What does PCM code p1870 stand for?
Once the vehicle has made it to a cruise state, the PCM then begins to monitor the vehicle’s cruise ratio. 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.
What is the diagnostic code for transmission slippage?
Diagnostic trouble code P1870 (Transmission Component Slippage) is a General Motors-specific code whose set parameters are determined by transmission type and engine size. The PCM monitors and compares engine speed to vehicle speed after the converter clutch has been commanded ON in either high gear or Overdrive.
When this code sets, it could have any number of causes, ranging from the sump running low of fluid to a malfunctioning torque converter. Take a GM 4L60-E transmission, for example. When it’s in Overdrive, the forward clutch and the 3-4 clutches are applied, as well as the 2-4 band. Now add the converter clutch.
What is the diagnostic code for GM transmission slippage?
Diagnostic trouble code P1870 (Transmission Component Slippage) is a General Motors-specific code whose set parameters are determined by transmission type and engine size.
……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.
Once the vehicle has made it to a cruise state, the PCM then begins to monitor the vehicle’s cruise ratio. 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.
What is the diagnostic code for a GM transmission?
An appreciation of how it works will help you understand why if something goes wrong. Diagnostic trouble code P1870 (Transmission Component Slippage) is a General Motors-specific code whose set parameters are determined by transmission type and engine size.
Where is the trouble code on a GMC?
When retrieving GMC trouble codes with an OBD II scan tool, proceed as follows: 1. Connect scan tool to the 16-pin data link connector (DLC) located underneath the steering column. The connector may have a removable cover. 2. Turn the ignition on.
What does the p1870 Chevrolet engine code mean?
Start by checking the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. What does this mean? The cost to diagnose the P1870 CHEVROLET code is 1.0 hour of labor.
How do I read computer codes on a 1997 Chevy truck?
Reading the engine codes on a 1997 Chevy truck was standardized with the implementation of on-board diagnostics 2 (OBD-II) in 1996. This allowed repair stations and dealership service centers to use the same equipment and the engine codes for most all vehicles.
An appreciation of how it works will help you understand why if something goes wrong. Diagnostic trouble code P1870 (Transmission Component Slippage) is a General Motors-specific code whose set parameters are determined by transmission type and engine size.
When retrieving GMC trouble codes with an OBD II scan tool, proceed as follows: 1. Connect scan tool to the 16-pin data link connector (DLC) located underneath the steering column. The connector may have a removable cover. 2. Turn the ignition on.
What does DTC p1870 mean on a transmission?
Transmission operation is normal before transmission reaches operating temperature, or before DTC P1870 is set (no slips, flares, or missing gears). The transmission fluid pan contains no abnormal debris (clutch material, bronze, brass, or metal fragments). Error Code P1870 is a type B code.
What’s the trouble code on a GM 4L80?
With GM’s 4L80-E transmission, this code has usually been the result of a cracked converter clutch piston.