Re: Replaced frayed wire - now no start
You should cut the wires off behind the nylon balun and install the fusible link wire on both just as the factory did.
GM made a bunch of changes about where those wires ran on every year so you should look in the GM wiring diagrams for your year truck to be sure.
The exact fusible link wire gauge will be in the wiring diagrams.
Don't put a larger gauge wire in to replace it.
Don't use a Maxi-fuse or a circuit breaker either because they don't have the same characteristics as the fusible link wire.
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1959 M35A2 LDT465-1D SOLD
1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8
RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.
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