Front and Rear Light Bulbs may Fail Prematurely on Cadillac CTS

The front and rear light bulbs are prone to premature failure. Our technicians tell us that the front bulbs can be very difficult to replace.

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Average mileage: 87,719 (50,000–178,000)
8 model years affected: 2003, 2004, 2005, 2006, more2007, 2008, 2009, 2012
26 people reported this problem
10 people shared problem details
2005 Cadillac CTS50,000
the front right turn signal will fail for a week work the next week then fail again for god knows how long.
2006 Cadillac CTS73,000
changed out LH brake light 3 times and RH brk lt 2 tms in 4 yrs. Possible wiring issue?
DRL failed. Cost nearly $100 in labor to replace due to design -- front bumper has to be be partially removed.
2006 Cadillac CTS178,000
neither brake lights or headlights work, car is in repair now cost over $500
Had to replace mine. I went to a auto parts store and bought mine, and had them replaced for about $400-$500 for both. At the dealer one headlight bulb is $500 each. To replace them the front bumper has to come off no other way to get to the front headlights.
2005 Cadillac CTS105,768
Replaced rear passenger bulb. No big deal. Looked like socket had been hot. Works fine now.
One of the front headlights is very weak.
2004 Cadillac CTS102,000
Driver's side rear light melted into light socket. Picked up a replacement at AutoZone for $34. Now passenger turn signal light has gone out. The top of each head light cover is discolored, it looks like a heat related effect on the top of each sealed plastic cover.
2005 Cadillac CTS60,000
Rear driver side brake light has gone out approximately 4 times in 2 1/2 years.
rear bulbs have gone a few times and only had the car for 1 year.
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