rear window defroster does not work.

you have a damaged grid.they sell a repair kit. but its only for small repairs.replacing the glass is your only option

So with the key in the run position and you press the defroster button it doesnt light up?Have you tried unplugging the chime module and plugging it back in?

no but i pulled the fuse n the radio went out. the chime dont work with doors open n key in it or on

So unplug the chime module and plug it back in and see if everything works make sure the module is fully seated.Let me know if that fixes it.

so is it the orange box on the back side of the fuse box

Yes and theres a tab on the bottom of it holding it in push down on the tab and pull the module out.Make sure there is no corrossion on the modules tabs.Let me know what happens.

some youngerkids had it n changed stereo in it n messed with things in this area. wasnt sure what wires where hot at what time n where they all went to. book doesnt show much. i will try after work tomorrow. thanks

Alright try that and see if it works let me know and we will go from there.

pulling chime did nothing.the wiring in the plug for switck left to right is yellow pink light blue then to the right side is black white brown green brown. key off pink has power. key on pink is dim, white is dim, brown has full power. the brown to the far right is on with headlights. pushing on the switch n checking it doesnt change anything.

Check all these wires with the switch unplugged.Brown should have power with the key in the run position.The black wire should have 2 ohms or less to ground.With the switch plugged in and the key in the run position turning the switch on the light blue wire should have 2 ohms or less to ground.

meter set on 20k black wire was0.04. set on 20 k key on switch pushed light blue was 0.46. a different switch i have test light blue ohms was jumping around alot.rechecked the other switch must got little better ground seem to hold better.

Do you have a 200 ohm setting on your meter?Were looking for 2 ohms or less to ground.

01.7 on black n 08.0 light blue on 200

Try turning on the rear window defroster and see if you have power and ground to the rear grid.

with the wires that i have power at the switch, when i turn it on shouldnt i get power to another wire that will run the grid. using a test light n pushing the switch power does not change on other wires. if i turn it on i should have power to the one wire on the edge of the glass. dont they do some testing with foil on the probe n run it down the lines in the glass. how do u check the ground on it.

have you tested each line on the grid for power with the test light.

no because i dont think im getting power on all the right wires at the switch to turn it on.the first time i went to check it i thought i had power on more of the wires than i do right now n my wiring diagram is not real good. its just a haynes for s model saturns,but shows better diagram for older cars than a 97. so i would like to make sure on that. i sold a sl1 to a friend and i might get it and compare them to make sure if nobody knows what is hot at what time. pushing the switch does not change power in any of the wires. i thought it should put power to another wire to go to the window.

The switch sends a ground to the chime module when pressed.With the switch on at the grid the drivers side connector is power the passenger side connector is ground.

wasnt sure which side was power or ground at window. checked both sides, pushing switch several times n had nothing.the little yellow light at switch does not come on. so i if the chime dont work will that stop it from working because it doesnt work with doors open key on or lights on.

Yeah the chime module will take out the rear window defroster since it runs thru it.

need to go to junk yard this weekend weather permitting. junk yard in omaha ne. so i guess i should get a chime module or two n see if that will cure it. need to get parts for 00 grand prix gtp that i was asking info on here to. i do have extra switch but might grab another. is there anything else related to this that i should try to get while there just in case. i wished i had a better wireing diagram for this. some of the cheap books not real good. do they still make motorbrand repair manuals or is like a big chiltons worth a damn. thanks for info. i will get parts n let u no what happens. let me no if i should get other parts.

When there was no power to the rear window defroster grid its usually the switch or the chime module from all the ones i have seen.If your going to get a chime module make sure you get the same color one orange like yours.They have different colors for different cars.

thanks for the color info didnt no that one.pretty much looks easy to tell the module should be the problem with the wiring diagram u sent. my book does not show anything like that. would have to untape wires n trace them to figure that out. i will let u know what happens. thanks

Your welcome keep me posted.

grabbed three modules at the junk yard. first one i put in worked with key in and door open. with headlights on, so i hit the switch for rear defrost n light came on. left it on a little n felt the glass n it seem to be warmer in the strips. didnt check any further but im sure it will work. if i would of had the diagram like you gave me im sure i would have got it. mine isnt anything close to that. when u asked me to take it out n put back in i said it didnt work but i didnt know that had anything to do with it ,but we got it im sure. thanks for the help n i will double check to make sure it works. thanks

Your welcome thats what were here for.

does a 00 l200 work the same way.my parents car is not working. but it had tinted widows. hoping they didnt ruin the grid. thanks

With the defroster on see if there is power and ground to the grid?If so then you have a grid issue.

is drivers side still power. this car is 208 miles from me so dont no when i can lookat it . just wanted to know how it worked compared to the s. the light does come on at the switch. thanks

Not sure which side is power and ground one side should have ground one side should have power i havent seen many problems with those rear defrosters.

each row should light a testlight.ive seen them tape paper tags on the back window.then when they pull them off instant grid damage.