GMLAN Wire Repair

If a wire is damaged, repair the wire by splicing in a new section of wire of the same gage size (0.5 mm, 0.8 mm, 1.0 mm, etc.). Use the DuraSeal splice sleeves and splice crimping tool from the J-38125  . See Special Tools . Use the following wiring repair procedures in order to ensure the integrity of the sealed splice.

Splice Sleeve Color	Crimp Tool Nest Color	Wire Gage mm2 / (AWG)
Salmon (Yellow-Pink) 12089189	Red (1)	0.035-0.8/(18-20)
Blue 12089190	Blue (2)	1.0-2.0/(14-16)
Yellow 12089191	Yellow (3)	3.0-5.0/(10-12)
Green 88988379	Red (1)	0.22-0.35/(22-26)

NOTE: You must perform the following procedures in the listed order. Repeat the procedure if any wire strands are damaged. You must obtain a clean strip with all of the wire strands intact.
1. Open the harness by removing any tape:
   • Use a sewing seam ripper, available from sewing supply stores, in order to cut open the harness in order to avoid wire insulation damage.
   • Use the DuraSeal splice sleeves on all types of insulation except tefzel and coaxial.
   • Do not use the crimp and DuraSeal splice sleeve to form a splice with more than 2 wires coming together.
2. Cut as little wire off the harness as possible. You may need the extra length of wire in order to change the location of a splice.

   Adjust splice locations so that each splice is at least 40 mm (1.5 in) away from the other splices, harness branches, or connectors.

3. Strip the insulation:
   • When adding a length of wire to the existing harness, use the same size wire as the original wire.
   • Perform one of the following items in order to find the correct wire size:
     • Find the wire on the schematic and convert the metric size to the equivalent American wire gage (AWG) size.
     • Use an AWG wire gage.
     • If you are unsure of the wire size, begin with the largest opening in the wire stripper and work down until achieving a clean strip of the insulation.
   • Strip approximately 7.5 mm (0.313 in) of insulation from each wire to be spliced.
   • Do not nick or cut any of the strands. Inspect the stripped wire for nicks or cut strands.
   • If the wire is damaged, repeat this procedure after removing the damaged section.
4. Select the proper DuraSeal splice sleeve according to the wire size. Refer to the above table at the beginning of the repair procedure for the color coding of the DuraSeal splice sleeves and the crimp tool nests.
Fig 1: Identifying Splice Crimp Tool Nests Terminal Identification
Courtesy of GENERAL MOTORS CORP.
5. Use the Splice Crimp Tool from the J-38125  in order to position the DuraSeal splice sleeve in the proper color nest of the Splice Crimp Tool. See Special Tools . The crimp tool has three nests, 1 is for the salmon and green splice sleeve, 2 is for the blue splice sleeve, and 3 is for the yellow splice sleeve.
Fig 2: Identifying Duraseal Splice Sleeve
Courtesy of GENERAL MOTORS CORP.
6. Place the DuraSeal splice sleeve in the nest. Ensure that the crimp falls midway between the end of the barrel and the stop. The sleeve has a stop (3) in the middle of the barrel (2) in order to prevent the wire (1) from going further. Close the hand crimper handles slightly in order to firmly hold the DuraSeal splice sleeve in the proper nest.
Fig 3: Identifying Crimped Duraseal Splice Sleeve
Courtesy of GENERAL MOTORS CORP.
7. Insert the wire into the splice sleeve barrel until the wire hits the barrel stop.
8. Tightly close the handles of the crimp tool until the crimper handles open when released.

   The crimper handles will not open until you apply the proper amount of pressure to the splice sleeve. Repeat steps 4 and 5 for the opposite end of the splice.

Fig 4: Identifying Heated Splice Sleeve
Courtesy of GENERAL MOTORS CORP.
9. Using the heat torch, apply heat to the crimped area of the barrel.
10. Start in the middle and gradually move the heat barrel to the open ends of the tubing:
    • The tubing will shrink completely as the heat is moved along the insulation.
    • A small amount of sealant will come out of the end of the tubing when sufficient shrinkage is achieved.