Very common problem on GM vehicles. GM has issued a service bulletin to fix the issue with moisture in the connector. See this post
http://ricksfreeautorepairadvice.com/check-engine-light-and-reduced-engine-power/
Check engine light and reduced engine power Ricks...
Diagnose and fix check engine light...
P1125 ????
DTC P1125: Accelerator Pedal Position (APP) System
Circuit/System Description
The throttle actuator control (TAC) system uses two accelerator pedal position (APP) sensors to monitor the accelerator pedal position. The APP sensors 1 and 2 are located within the pedal assembly. Each sensor has the following circuits:
• A 5-volt reference circuit
• A low reference circuit
• A signal circuit
SOURCE: How many gallons can a 2008 grand prix pontiac hold?
hi
According to GM and www.feuleconomy.gov, the 2008 Pontiac Grand Prix has a 17 gallon gas tank.
hope this helps.
riz.
SOURCE: 2002 Pontiac Grand Prix Thermostat
as you face the engine the thermostat bell is on the right (drivers side) Follow the radiatoe hose. Remove the two bolts and raise the bell still attatched to the hose. the thermostat is there with the rubber seal. You can gently pry the thermostat out with a screwdriver or something similar. Put in new thermostat be sure it is the same as the old one, and then replace or change the seal (be sure it is the smae size and thickness as the old one as I got the wrong size from Napa) Then replace the bell, and tighten, but not over tighten. I hope this helps!
SOURCE: 2008 Pontiac Gran Prix,Radio MP3 line-in/aux-in
The upscale model is the only that i know of that has one. What model do you have?
SOURCE: 2005 pontiac grand prix, code p0641 came on. What
DTC P0641 The powertrain control module (PCM) provides a 5-volt reference to the
following sensors:
The throttle position (TP) sensor 1
The accelerator pedal position (APP) sensor 2
The engine cooling fan speed sensor
The AC pressure sensor
The fuel tank pressure (FTP) sensor
The oil pressure sensor (OPS)
The PCM monitors voltage on the 5-volt reference circuit. If the voltage
is higher or lower than required, DTC P0641 will set.
Conditions for Setting the DTC
The PCM detects a voltage that is higher or lower than required on the
5-volt reference circuit. The above condition is present for 1 second. Action Taken When the DTC Sets The control module illuminates the malfunction indicator lamp (MIL) when
the diagnostic runs and fails. The control module records the operating conditions at the time the
diagnostic fails. The control module stores this information in the
Freeze Frame/Failure Records.
Conditions for Clearing the MIL/DTC The control module turns OFF the malfunction indicator lamp (MIL) after 3
consecutive ignition cycles that the diagnostic runs and does not fail.
A current DTC, Last Test Failed, clears when the diagnostic runs and
passes. A history DTC clears after 40 consecutive warm-up cycles, if no failures
are reported by this or any other emission related diagnostic. Clear the MIL and the DTC with a scan tool.
Yes i can be dangerous, depending which issues mentioned above has triggered the code such as a faulty gas peddle position sensor. the code can also cause a reduced engine power to activate.
Thank you for using Fixya and best advice is to have the dealer address these issues. A tech 2 scanner would be needed to address the P0641 DTC code.
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SOURCE: 2008 Pontiac Grand Prix Factory stereo color codes
attach both power and illumination wires to constant on car wires.... only way to have switched power is connecting the switched/ignition wire to a fuse
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