16-NA-171
Service Bulletin Details
Public Details for: 16-NA-171
This informational bulletin provides repair information on reconnection of rear window (defroster) contact or tab.
- 2016 - 2015 - 2014 - 2013 - 2012 -
Models from 2016
2016 CADILLAC ESCALADE |
2016 CADILLAC ESCALADE ESV |
2016 CHEVROLET SUBURBAN |
2016 CHEVROLET TAHOE |
2016 GMC YUKON |
2016 GMC YUKON XL |
Models from 2015
2015 CADILLAC ESCALADE |
2015 CADILLAC ESCALADE ESV |
2015 CHEVROLET SUBURBAN |
2015 CHEVROLET TAHOE |
2015 GMC YUKON |
2015 GMC YUKON XL |
Models from 2014
2014 CADILLAC ESCALADE |
2014 CADILLAC ESCALADE ESV |
2014 CHEVROLET SUBURBAN |
2014 CHEVROLET TAHOE |
2014 GMC YUKON |
2014 GMC YUKON XL |
Models from 2013
Models from 2012
File in Section: Service Bulletin - Bulletin No.: 16-NA-171 Date: May, 2016 TECHNICAL Subject: Repair Information for Reconnection of Rear Window (Defroster) Contact or Tab Engine: Transmission: 2016 All All 2012 2016 All All Tahoe Models 2012 2016 All All Yukon Models 2012 2016 All All Brand: Model: Cadillac Model Year: VIN: from to Escalade Models 2012 Chevrolet Suburban Models Chevrolet GMC from Additional Options (RPO) Equipped With Electric Rear Window Defroster (RPO C49) Involved Region or Country North America and NA Export to Repair Suggestions In many cases the terminal tab will still be in the connector when you examine the vehicle. For 2007-2014 Chevrolet Tahoe, Suburban, GMC Yukon and Cadillac Escalade vehicles (with moveable glass), always replace the defroster tab (GM P/N 25916031) and the defroster electrical power connector (P/N 12034110). For all other vehicles, reconnect the original defroster tab. The generic procedure below is not very time intensive, but does include minor preparation work to create a good bonding surface. Be sure to follow each of the steps, as combined they will produce the strongest bond possible. Please consider the following before attempting the repair: 1. If it is winter, bring the vehicle into the service garage and remove any snow from the back window area. Time must be allowed for the glass to warm to the temperature inside the building. Caution: Heating the glass excessively, or repeatedly without time to cool, may result in glass breakage. ALWAYS wear safety glasses when performing this repair! Important: Most rear glass has a black painted masking around the edge of the glass. When cleaning up the connection surface, be very careful not to damage the surface of the black shading or the surface of the glass. Copyright 2016 General Motors LLC. All Rights Reserved. 4522803 2. Mask off a small area around where the terminal was originally. Page 2 May, 2016 4499215 3. Prepare the surface of the used defroster tab and the defroster buss bar with fine grain (500 grit) sandpaper or Emery cloth. It is not necessary to remove all of the original solder, but it should be scuffed sufficiently so that no oxidation is present. Lightly sand the area to prep the defogger grid. The photo above shows a close up of a properly prepared surface. Important: Do not sand through the defroster grid. Bulletin No.: 16-NA-171 4499216 6. Apply a small drop of the Loctite 312 to the foot of the terminal. Note: Some defroster tabs have two feet. 4499217 2000238 4. Wipe the newly prepared contact areas with Kent Automotive* Acrysol™ (or equivalent) to remove any residual oil or dirt. 5. Spray the defroster grid and the terminal feet with the Loctite 736 Primer. 7. Press the terminal onto the defroster grid and hold for 1 minute. After releasing allow 5 minutes to form a secure bond. Note: If too much Loctite 312 adhesive was applied, the Loctite Primer 736 can be reapplied while holding the terminal in place. Important: Try to align the new contact so that it is positioned with the same orientation as the original contact Bulletin No.: 16-NA-171 May, 2016 4499218 8. Dispense equal parts of the tab bonding epoxy. Page 3 4499222 10. Apply the epoxy to completely cover the terminal foot/feet and the prepared area of the defroster grid. Smooth out the epoxy for a good contact between the terminal and defroster grid within the two minute work time. 4499220 9. Mix the epoxy thoroughly for 45 seconds. There is a 2 minute work time once the epoxy is mixed. 4499223 11. Remove the tape. Page 4 May, 2016 Bulletin No.: 16-NA-171 Allow the epoxy to cure for 24 hours at approximately 75°F (24 °C) or at the temperature inside the building, before reattaching the harness connector and returning the vehicle into service. Parts Information Description Part Number Qty Kent Automotive Acrysol™ Solvent (32 fl oz) 946 ml* P20005 1 Loctite 312 Adhesive Speedbonder Combination Pack (contains Loctite 312 adhesive and Loctite 736 Primer) 03333 1 2000 Tab Bonding Kit Epoxy Kit ** 1 *or equivalent product **Available from Planned Products LLC, www.frostfighter.com or by phone: (303) 682-0274 4499224 12. Apply light heat between 100-150° F (38-65° C) not to exceed 150° F (65° C). Note: Placing the opposite hand under the glass at the terminal while heating the terminal will prevent overheating the epoxy. Once the glass becomes hot to the touch, remove the heat. 13. Recheck the epoxy in 10 minutes to verify the epoxy has firmed up. If the epoxy remains soft reapply heat while touching the opposite side of the glass. The second application of heat only needs to be brief enough to reach 100°F (38 °C). Version Warranty Information Labor Operation Description Labor Time 2080668* Reconnection of Rear Window Defroster Tab 0.6 hr *This is a unique Labor Operation for Bulletin use only. 1 Modified GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information. WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION