The 2020 Chevrolet Low Cab Forward 4500 has 2 recalls, both affecting Crew Cab models with the 6.6L gasoline engine, and both carrying a risk of fire or a no-start condition due to electrical wiring problems.
In the first, the positive battery cable runs too close to the right-side exhaust pipe, and exhaust heat can break down the cable's insulation over time, exposing bare wire that can short and ignite. In the second, the chassis wiring harness can chafe against the coolant return hose running from the radiator to the reservoir; if the hose wears through, leaking coolant can damage the harness and cause an electrical short, an engine stall, or a fire.
At a glance
What can fail
The chassis wiring harness and coolant return hose may rub against each other. Over time, chafing can puncture the hose, leaking coolant, or damage the harness, causing an electrical short.
What the fix does
Dealers will adjust the positive cable to prevent chafing between the harness and hose. The repair is free of charge.
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Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The positive battery cable connecting to the starter may be too long and routed too close to the right-side exhaust pipe, creating a potential failure point.
What the fix does
The positive battery cable will be adjusted to correct routing and length away from the exhaust pipe.
Summarized — see the official notice for exact wording, dates, and contacts.
