A more durable ignition wire service kit with a high temperature core wire is available for spark plug wire and coil wire replacment.
The new kit, P/N 12058480 (704C), replaces both the 1983 service kit, P/N 12043712 (604R) and the 1984-86 service kit, P/N 12043814 (604U).
The new kit, P/N 12058480 (704c), consists of a coil wire, four (4) spark plug wires and two (2) spark plug wire clips. The ignition wires in this kit can also be serviced individually with the following part numbers:
New P/N Description Replaces P/N's -------- ----------- 1983 1984-86 ---- ------- 12058490(321M) 14" Coil Wire 12036900(312A) 12036972(316B) 12058485(321E) #1 Spark Plug Wire 24" 12036948(314M) 12036993(317D) 12058484(321D) #2 Spark Plug Wire 22" 12036947(314J) 12036992(317C) 12058482(321B) #3 Spark Plug Wire 18" 12036945(314H) 12036990(317A) 12058481(321A) #4 Spark Plug Wire 16" 12036944(314G) 12036989(316Y)
NOTICE- Ignition wires are covered under the 5 year/50,000 mile emission warranty.
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those 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 a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.