20 Most Recent 2005 Pontiac Bonneville - Page 5 Questions & Answers

sounds like the sensor is becoming questionable or a hi resistance ground in this part of the blower sensor circuit

First thing to check is whether the gas cap is on tightly. If it is, the next would be to replace the gas cap. That solves 90% of these problems.

P0440 is a generic code for Evaporative Emission Control System Malfunction... pretty much for all makes. It takes 1 malfunction to create a pending DTC... at 2 consecutive malfunctions the MIL(Malfunction Indicator Light,Check Engine Light, etc.} Ok, after you fix it, it should take 3 trips to turn off the light, then 40 more to Remove the code from the computers memory

possible bad ground
possible fusible link ?
crimped wire during process start with a test light and work your way back with the ignition switched to the on position

There is a problem in the ABS circuit and will have to be taken to an actual GM dealership.

If it has the northstar, skip it or get a good warranty with it. They are expensive when they break, and it usually starts having problems around 70K.

No special tools, however the hard part will be getting the plug wires off without pulling the inner contact apart. Rotate the boots on the plugs before trying to remove the wires.

depending on what motor it's not hard

Get a caliper tool and screw it back in.

you have a switch that is shorting out , try tapping each switch while sitting still with power on to determine which switch it is.

do your have injector pulse (will need to puchase noid lite to check)

remove the caliper bolt, swivel the caliper up and slide off the rod. To push the caliper piston in to accommodate the new pads, you must get the tool to TWIST the piston in while slightly pressing the piston. Check with your local Murrays, Auto Zone for the tool loaner program. Gm W-Body rear caliper tool. Good luck

If it is just clear water it is the drain tube that might be plugged, u can see the tube from underneath the car, it may have dirt in it. if it is sticky or orange or green it is coolant and that would indicate a heater core leak. The heater core is is what allows you to have cabin heat. If it is coolant the 1st thing i would try is a tube of powdered alumaseal, you can get it at any auto part store. DO NOT USE BARS LEAK OR ANY OTHER PELLET STOP LEAK, as they very rarely help and more often than not they clog up other areas in the cooling system, the Alumaseal is a silver powder made from aluminum and adhesives that works amazingly well.

turn steering to right and left hard while trying to get it.

no tcm its part of the pcm https://www.2carpros.com/questions/tcm-45767027

If you have the 3.8L First check the basics . Do you have spark ? Fuel Injector pulse ? My guess is that the ground connections under the coil assembly .are not tight . Very common problem that occurs during a water pump repair . Good luck

It is #3 in the picture. You should be able to get at it in the engine compartment.

With a monitor scan for the knock sensor defect or no signal from PCM should have around 5volts. Check Ignition key on engine off. With a piece of metal hit near the knock sensor and the voltage have to change normally. Also, the EGR valve not working or clog. For the hot engine Radiator cap defect or Electrical fan not working when hot. The radiator flush can be done if restrictions. hope it helps.

Check for a bad fuse

this sounds like 1 of 2 possible problems.
a bad headgasket or a clogged catalytic convertor. i would lean more towards the convertor