Question about 2008 Chevrolet Impala LT
Defogger not working. Light on button works. Fuse Tested Good. Relay clicks when button is pressed. No voltage on right or left contacts for rear window defogger grid. Have continuity across contact though. Now I need to know where to go back between the grid and relay to look for problem.
I just fixed my car to the exact question above, it took 20 minutes total. yes I\'m good with a wrench, but this fix doesn\'t reqire you to be.
Problem: Rear defroster doesn\'t work, but the fuse is good and the little light comes on on the button.
Answer: Go to front passenger kick panel where the "other" fise box is and remove the pastic panel, it just pops straight up. Under the fuse block is a white plug that connects front wire harness to the rear harness. this is where the problem is. pull the connector off the body, my plugslide straight back. Now flip the whole connector over, there you\'ll see the burnt spot on the plug. losse, corroded connection causes melt down. this stuff happens. my car has a purple wire going into the plug and a black one coming out, this is the rear defroster wire. cut the purple wire aleast a half inch before the plug and cut the black one coming out of the plug the same, always leave a little wire incase you ever want to reuse that terminal, standard rule. now take two butt connectoers and a four inch piece of ten gauge and splice the purple and black wires back together. lots of current so DO NOT use 12-14 gauage wire, it will melt. and Wa-La, its fixed!! since you dont have to do the trouble shooting and chase down the wires like i did, should take you ten minutes to fix.
Now if this doesn\'t fix your car, then don\'t pay me!!
If this DOES fix your car, then take your wife out to dinner with the $150.00 i just saved you from having to take it to the dealer,
(they would sale you new connectors and harness)
Posted on Jul 06, 2013
Check for a broken or missing ground connection at the X2 terminal of the defogger grid. Then go back up the line from the grid to find where you are losing voltage. The black wire from the grid is spliced to a PPL wire and the PPL wire goes to the F1 terminal of the 40A BATT 3 fuse which you say checks good
Posted on Oct 30, 2012
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
SOURCE: 2002 Alero defogger
A common thing to fial on these- assumning the grid is ok, and wires are still attched to grid, is the rear def / antenna module. It is behind rt. rear quarter trim panel. The modules burn up, and also melt the connector. the module and connector would need to be replaced.
Posted on Jan 04, 2009
SOURCE: rear defogger not working
Easiest way to test it is with a test light, $5-$10 at auto parts store or hardware store. Attach ground clamp to good ground source then lightly/carefully, touch grid close to where connection to it is with point of test light. If it lights, you've got power there, and you need to look for breaks in lines. Might save a lot of looking for something that is o.k.
Posted on Mar 22, 2009
Did you check the defogger grid connectors to ground on the chassis, check both sides. So to do this disconnect the grid connectors and turn on the rear defogger, at one of the connectors to the grid you should have battery voltage. I am not sure which side the power comes in on so thart is why I said both, you must find a clean sheet metal chassis ground to connect the 12 volt test light ($4 at any parts store like Autozone) clip lead end to, use an ohm meter if you are not sure you have a good ground. Also make sure the engine is running when you do this test. Let me know what you find.
Posted on Sep 14, 2011
Tips for a great answer:
Nov 23, 2016 | 2011 Chevrolet Malibu
Oct 30, 2016 | Cars & Trucks
Oct 05, 2016 | 2000 Buick Park Avenue
Jan 05, 2016 | Suzuki Cars & Trucks
Dec 30, 2012 | Nissan Almera Cars & Trucks
Jul 13, 2017 | Chevrolet TrailBlazer Cars & Trucks
Feb 25, 2010 | 1998 Buick Park Avenue
Nov 08, 2009 | 2006 Chevrolet Impala
Dec 06, 2008 | 2003 Oldsmobile Alero
1,273 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: