Possible Electric Issue 2003 Silverado LS Z71 Extended Cab

I don't know if this is to late, but I have had the same problem with my 2003 HD Crew Cab. Bose radio system. First radio problem, no audio output, display is fine. Two days later, truck won't start but radio plays. Towed to dealership. Diagnosis "shorted resistor in blower control circuit GM part #89018597" part replaced under warranty. One year later while on vacation out of state, radio quits, go to local dealer he looks up history on his computer,orders in same part on my request. Next day battery dead, towed in. Replaced part charged battery on my way.

I have seen on other forums where people with the same problem have payed big bucks to change out the radio, and/or the battery and alternator.

Good Luck JJ

Resistor in blower control circuit? That's a new one to me. I guess vehicles electronics are so interrelated these days that it's possible.

Have you has anymore problems JJ?

I haven't had a problem since, but it's only been a little over 2 months. I intend to spend a lot of time at the dealership asking questions. At this point i'm just collecting evidence to support my claim. I want to know IF there is a link between the AMP circuit and the blower control circuit. For all I know they may just be pulling answers out of thin air and it was a lucky guess. FYI the control circuit is located in the blower housing under the glove compartment. JJ

Sometimes these things run through a model year, bad subcontractor on a component, etc. I'd be interested in seeing if other people from this year (+/- 1 year) have a similar issue.

Keep us updated.

gm had a problem with the bose system atleast in my 03 the radio would display but no sound the fix was to replace the external amp hope this helps
black03silverado
8)

It hasn't happened since I started this string, but I do carry a jumper at all times.

On my truck all I have is the standard stock Radio/CD not a Bose, but I would guess most of the supporting components are the same, but I and taking notes in case it happens again.

Well I don't have any radio issues but I am having problems with the heater blower resistor.
Mine burned up and I replaced it but i still can't get the blower to work.