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Dave Nova
Dave Nova, Cadillac Technician
Category: Cadillac
Satisfied Customers: 1522
Experience:  ASE Master Certification. GM World Class Certification
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2004 Cadillac CTS window issues. Can roll all windows up or

Customer Question

2004 Cadillac CTS window issues. Can roll all windows up or down from driver seat control panel. But from rear seat switches I can only roll up not down. Suggestions?
Submitted: 2 months ago.
Category: Cadillac
Expert:  Mechanic01 replied 2 months ago.

Hello my name is ***** ***** I will be assisting you with all of your vehicle questions today. Give me one moment while I review your question and come back with a answer. Please be aware I do not know your skill level or abilities so I will be asking a lot of questions and in a lot of cases we will respond to each other quite a lot before we find a solution. As far as phone calls are concerned that is the system prompting you, not me, and they do cost more money, I prefer text but in some cases a phone call is required.

Expert:  Mechanic01 replied 2 months ago.

SO each door has a module and they all talk together, there must be a data line issue or a ground problem in one of the modules, its pretty complicated little system, Are you getting any codes?

Customer: replied 2 months ago.
Not seeing any codes. I did try the module reset thing on each switch by hold down button for 3 seconds after it was down and same for up.
Expert:  Mechanic01 replied 2 months ago.

I would try a whole system reset, undo the battery cables and hold them together for 30 mins, re connect and reprogram windows to see if they relearn,

Customer: replied 2 months ago.
Hold battery cable together for 30 seconds or minutes?
Expert:  Mechanic01 replied 2 months ago.

minutes

Expert:  Mechanic01 replied 2 months ago.

that will allow the system to power down and expel any voltage

Customer: replied 2 months ago.
Ok. Will try and get back to you
Expert:  Mechanic01 replied 2 months ago.

no worries ill be around

Customer: replied 2 months ago.
Does it matter if I reconnect ground (black) wire to battery first or last?
Customer: replied 2 months ago.
Reconnected everything. Reprogrammed module with 3 second hold. Problem not fixed. Still can't put rear windows down using rear switches. Same as before.
Expert:  Mechanic01 replied 2 months ago.

next is to get a scan and see if there are any codes coming up, you can get a scan at the local auto parts store for free

Customer: replied 2 months ago.
Local auto zone did scan. No codes came up. Next step?
Expert:  Mechanic01 replied 2 months ago.

Ill have to dig up the ground locations and I wont be in tomorrow is Thursday or Friday ok ?

Customer: replied 2 months ago.
Ok.
Expert:  Mechanic01 replied 2 months ago.

ok here are all the ground locations for that, if these check out and you reset computer and still nothing we will need a scanner to get into the module and see if the module is seeing everything and diagnose from there