20 Most Recent 2004 Pontiac Bonneville - Page 3 Questions & Answers

Dash Switch Assembly's are 90 % the cause of this Problem since they are Made of all Plastic Parts but every once in a while You get a bad heater control Module.

This is actuated by vacuum and you have a line off the actuator that moves the position of the flaps.

this is it , look around drive axel

more than 30 lbs.

If the right side works it's not your flasher, Its your left side bulb, either front turn signal or rear tail light bulb.

I would check your relays first. Usually your problem is the relay. You may have a Service Engine Soon light on also. This can indicate that your coolant temperature sensor isn't working therefore the sensor isn't telling the computer to turn the fans on. Another quick easy test is to start the car and while it's idling either turn on the a/c full blast or the heater defroster. This should cause the fans to kick on for a length of time. (The length of time can very) If they do come on it would lead me to believe that you have a coolant temp sender problem. If they still don't come on after a few mins, I would definitely look into the relay.

check for wheel bearing problems .

The cluster stores it's own codes that require a professional scan tool to access. The bidirectional scan tool can also test functions in the cluster.

Try going through wheel well. Car will be jacked up tire removed. ,might have better access....

Since there is no voltage applied with the ignition off, if the gauge is not dropping down all the way, it is the gauge that has failed.
Temperature sensors are frequent failures but they are not active when the car isn't powered up. They can be intermittant, high, low but with no power, the gauge itself should go to the minimum.  

The defector shield is held by pushpins, pull the center of the pin out and the whole pin will come out. You will have to raise the car or climb under and remove the pins only on the side you are working on, twist the bulb out, remove and replace. Push defector shield back and put the pins back in

Check the latch

what are we talking about?

hav a data stream run on car--its numbrs pinpointing the issue--partsplaces cant doit--need shop that has expensive diagnostics-not just code readers----always try reprogrammin a computer 1st-its called flashing and evn if u buy a new one-u need it done

it has a compressor in the back, you can not manually add air unless you bypass the compressor and put in an after market line kit.