Problem with my 2002 pontiac Grand Am
2.4
Why does my trac off light, service engine soon come on
Repairs done prior = transmission flush
tip/donation yes
GM tech = kk
question = When the trac off light comes on, it makes a thump when it
goes through the gears. It is in a shop right now, but the light is not
coming on and they don't know what it is.
KK:
If the service engine light is or was on, then there IS a trouble code stored in the
computer.
This is the key to finding out what system has a problem.
There are several engine light codes that can cause trans. Shifting problems.
A common one is a code for the
Intake Air Temp sensor(IAT). A problem with the sensor, the connector
unplugged, or the wires at the sensor connector will give a code,
and affect transmission shifting.
P0112 or P0113 are the codes for the IAT sensor.
Sometimes after an oil change, the
sensor may have been left unplugged.
Is sensor is plugged in, and you have either of the codes above, see this link for
Common Causes of P0113 or P0112.
2.4
Why does my trac off light, service engine soon come on
Repairs done prior = transmission flush
tip/donation yes
GM tech = kk
question = When the trac off light comes on, it makes a thump when it
goes through the gears. It is in a shop right now, but the light is not
coming on and they don't know what it is.
KK:
If the service engine light is or was on, then there IS a trouble code stored in the
computer.
This is the key to finding out what system has a problem.
There are several engine light codes that can cause trans. Shifting problems.
A common one is a code for the
Intake Air Temp sensor(IAT). A problem with the sensor, the connector
unplugged, or the wires at the sensor connector will give a code,
and affect transmission shifting.
P0112 or P0113 are the codes for the IAT sensor.
Sometimes after an oil change, the
sensor may have been left unplugged.
Is sensor is plugged in, and you have either of the codes above, see this link for
Common Causes of P0113 or P0112.
TRAC OFF light - service engine soon
Trac off / Service Traction control system
---------------------------------------------------------
This light or indicator on the dash or message center is usually related to
the ABS system, and sometimes to the check engine light.
When this is on, the traction system is disabled. A problem in the ABS
system is usually the cause, and would have to be scanned for codes.
Sometimes and engine problem that causes a check engine light will also
cause the TRAC OFF light to come on certain vehicles. In this case, the
PCM would have to be scanned for codes and repaired first. Then the
traction control system codes can be cleared.
---------------------------------------------------------
This light or indicator on the dash or message center is usually related to
the ABS system, and sometimes to the check engine light.
When this is on, the traction system is disabled. A problem in the ABS
system is usually the cause, and would have to be scanned for codes.
Sometimes and engine problem that causes a check engine light will also
cause the TRAC OFF light to come on certain vehicles. In this case, the
PCM would have to be scanned for codes and repaired first. Then the
traction control system codes can be cleared.
WARNING LIGHTS
