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Eric
Eric, Automotive Repair Shop Manager
Category: Chevy
Satisfied Customers: 29950
Experience:  20+ yrs. experience as repair shop manager and technician.
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2004 Silverado Z71 crew cab, service 4w drive light on, new

Customer Question

2004 Silverado Z71 crew cab, service 4w drive light on, new switch, neutral light instant on then no lights, new actuator, cleaned ground wires, changed fuse, question module don't find?
Not showing code.
Any suggestions. Possible computer update?
Submitted: 1 year ago.
Category: Chevy
Customer: replied 1 year ago.
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Customer: replied 1 year ago.
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Jake
Expert:  Eric replied 1 year ago.
HI,
I am sorry that you have not been helped yet. I just came online and saw your question.
Have you had the control module scanned for stored fault codes yet? If so, what are they?
If not, this needs to be done, which saves time on guessing the issue and replacing parts needlessly.
There is a service bulletin out for fault code C0374 setting due to water intrusion into wiring harness at the transfer case speed sensors, but we need the fault code to see if this is applicable