Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2010 GMC Savana 3500 V8-6.0LFACTORY OEM SERVICE PROCEDURE
Kostal Connectors (Glow Plug Control Module)
Kostal Connectors (Glow Plug Control Module)
Special Tools
J-38125 Terminal Repair Kit
Removal Procedure
View of typical connector.
View of connector in released position.
1. Locate the assist lever at the back of the connector. Move the assist lever to the rear position.
2. Disconnect the connector from the component.
3. Use a small flat-blade tool to remove the dress cover.
4. Slide the dress cover forward and off of the connector.
5. The terminal positive assurance (TPA) is located in the front and rear of the connector.
Note: The front TPA cannot be removed from the connector. Only move it to the preset position.
6. Use a small flat-blade tool to move the front TPA to the preset position, outboard approximately 0.125 in. (3 mm).
7. Use a small flat-blade tool to completely remove the rear TPA from the connector.
8. Use the J 38125-24 or the J 38125-560 tool to release the terminals by inserting the tool into the terminal release cavity. See the release tool cross reference in the Reference Guide of the J-38125 to ensure that the correct release tool is used.
9. While holding the removal tool in place, gently pull the wire out of the back of the connector. Always remember never use force when pulling a terminal out of a connector.
Repair Procedure
Use the appropriate terminal and follow the instructions in the J-38125.
Location of the terminal in the repair tray and the proper crimp tool can be found in the appropriate connector end view.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.