1992 - 2002 GM OBS Trucks Vans 6.5L Diesel V8 Glow Plugs & Wiring Repair & Replacement (Chevy & GMC)

This video goes over approaches for removing, evaluating, repairing, testing and replacing GM 6.5L diesel engine glow plugs, and their wiring harness connectors. Glow plugs are a maintenance wear item for 6.5L diesel engines that require periodic attention, to insure good cold weather performance. Often neglected, the glow plug wiring harness connectors also should be inspected and tested. We cover all that, and more, in an epic level of detail.

The vehicle shown is a 1999 Chevrolet Suburban, old body style (OBS), with the 6.5L Turbo Diesel engine option. However, the glow plug procedures and steps shown are applicable to ALL 6.5L turbo and non-turbo diesel engines across Chevrolet, GMC, and Holden trucks and vans for all OBS model years in the video title. Some of this material is also applicable to the earlier 6.2L diesel engines as well.

Applicable to 94 95 96 97 98 99 and carry over model year 2000, 2001 and 2002 old body style (OBS) trucks and vans from Chevrolet, GMC , and Holden such as the Suburban Tahoe Yukon Silverado Cheyenne Sierra and Express.

The eBay and Amazon search links below are paid links, for which I may be compensated and earn a commission, if you choose to buy the parts and tools shown in this video thru them:

If you are looking for the ACDelco 60G glow plugs GM 12563554: https://ebay.us/Q9MCnP or https://amzn.to/3xUmGHA

For the Aptiv (formally Delphi) series 56 terminals 2965141 (steel), 2962447 (brass), or the PA66 based gray connectors 8905615: https://ebay.us/mc5LRk or https://amzn.to/3Dq0W7J

The Aptiv 12094430 series 56 connector removal tool you can find at: https://ebay.us/s3afQi or https://amzn.to/3lv2VRZ

For those H3 style ceramic connector blocks here's a link to the product you can salvage those from: https://ebay.us/IaKfFo or https://amzn.to/3Gchdie

You can get pre-built replacement glow plug harness sections for the drivers side including the fusible link and series 56 terminal ends: https://ebay.us/C27iBA

For the ACDelco glow plug wiring harness for the passenger side cylinder #4 and #6 GM 15320904 (also Dorman 635-519 or Alliant AP0067): https://ebay.us/BWmDmZ or https://amzn.to/3Gg0zOC

For the orange teflon passenger side wiring harness pigtail connector to the cylinder #4 or #6 wiring harness section ACDelco PT2905 or GM 13587166: https://ebay.us/SJIEnP or https://amzn.to/2ZTlM1o

For a Bolt Buster inductive heating tool like I used on the heat shield nuts: https://ebay.us/p0GgRQ or https://amzn.to/3lzcsaF

For passenger side glow plug heat shields GM 10183999 (there's also an aftermarket one PT Wiring Solutions https://ptwiringsolutions.com/product...) , or the shield nuts GM 11514597: https://ebay.us/XyHLh6

The MSD 3506 jaws for series 56 terminals at: https://ebay.us/I1qZvR or https://amzn.to/3zc872V

Replace the upper control arm dust shields GM 15569497 (K1500 LH), GM 15686091 (K2500/3500 LH), GM 15990539 (all RH) and 15553977 (all RH bumper side), or their fasteners GM 332364, with: https://ebay.us/ikYCRZ

For a stuck glow plug in your 6.5L, this one at ‪@leroydiesel5647‬ is the best removal tool: https://leroydiesel.com/products/lero...

You can search for a GM factory service manual here: https://ebay.us/qRiDcB

And if I've saved you some $$ here, consider some coins for the coffee tip-jar! https://ko-fi.com/drshock

1994 1995 1996 1997 1998 1999 2000 2001 2002

Chapters:
0:00 - Procedure overview
0:50 - Connector tension testing & identification
2:25 - Glow plug harness conductivity test
4:14 - LH side glow plug removal & resistance test
7:30 - Glow plug corrosion inspections
8:30 - Deprecated tests
9:14 - ACDelco Glow plug technical information
11:17 - Diagnosing and repairing harness terminals
19:30 - Access technique for cylinder #5 & #7
20:22 - RH side approach and plug access
23:28 - Heat shield removal and tension testing
30:30 - Access technique for cylinder #6
32:01 - Access technique for cylinder #8
47:36 - Example of failed glow plug test
48:52 - Closing thoughts and plug #8 install

#drshock #65diesel #dieselsuburban

Disclaimer: DrShock, the alias for the human content creator for this YouTube channel, is not responsible for any damages, injuries, losses, or liabilities associated with any repairs, upgrades, or maintenance performed on yours, or any other, vehicle whatsoever. No warranty, express or implied, is made as to the accuracy or completeness of any information provided within this channel. Viewing and using the “as-is" information of this channel is totally at your own risk. Always wear personal protection equipment and follow appropriate vehicle manufacturer service manual guidelines with original manufacturer parts only when performing any repairs, upgrades, or maintenance upon any vehicle.