Question about 2003 Chevrolet Suburban 1500
I just went through the wiring diagram looking for the relation between the two problems you have.
If you can see it in the diagram below it will show you that the wiper motor and the access light both share a common ground circuit. .
And the other wire in common goes between the wiper module and the body control computer liftgate ajar switch sensor wire. This one will prevent the activation of the wiper motor when the hatch is open.
I believe you will need to go through the diagram and test the circuits and find out which of the wires is causing the issue.
Is the ground circuit open, or is one of the latch switches shorted?
A multi meter, some time and patience will repair this if you are comfortable in tracing electrical problems. If you are not too comfortable doing electrical repairs this one may end up with you getting very frustrated...or worse ;)
I hope this helps you towards a good repair.
Happy New Year and thank you for using FixYa.
Posted on Jan 01, 2011
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Posted on Jan 02, 2017
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