One or More Rear Lights May Not Work on GMC Savana 1500

The tail light wiring harness in the cargo area is not protected very well. As a result it may become damaged due to normal wear a tear. This damage can causing some or all of the rear lights to stop working.

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Average mileage: 132,157 (15,000–312,000)
15 model years affected: 1996, 1997, 1998, 1999, more2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
40 people reported this problem
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problem details
2000 GMC Savana 1500 235,000 mi,
ALL rear brake lights quit except center lamp at roof. Bulbs are O.K. blinker also do not work
My 2003 gmc envoy tail lights does not work ,I replace the fuses and they still don't work ,,I don't know if there is a relay for tail light ,,can someone please help
1999 GMC Savana 1500 100,000 mi,
brake lights on two lower lights no longer work
2006 GMC Savana 1500 312,000 mi,
Rear tail lights and brake lights not working. Turn signal works on outside but not on the inside. Bulbs replaced and it still didn't fix the problem. Still checking into the Tail Light Wiring Harness. This has been a wonderful vehicle and engine still runs great. Sorry to think that an electrical problem could take us out of commission when it still runs so good!
2006 GMC Savana 1500 127,000 mi,
Turn signals and stop light intermittent operation still have not determined the problem
2000 GMC Savana 1500 150,000 mi,
The right backup light stopped working. I disassembled the light fixture and found the socket and bulb had rusted together. The GMC parts man told me it was a common problem and I had to replace the whole wiring harness. I bought a new wiring harness and replaced the old one. Not a simple job but not complicated either.
1996 GMC Savana 1500 180,676 mi,
My left rear blinker bulb quit. The yellow wire leading to it from around the ceiling has abraded and grounded it out.
2001 GMC Savana 1500 102,369 mi,
The driver side rear brake light bulb has to be changed a couple of months. Water gets into the lens compartment and droplets form inside. I can't seem to get the assembly to seal.
My Left Brake Light was Very Dim (Compared to the Right) And wasn't working sometimes. It would go out. Had the Wiring Harness for Left Brake Light Replaced...Now Works Perfectly.
1999 GMC Savana 1500 45,000 mi,
Still not fixed. Have you seen what a harness costs. Ridiculous
1997 GMC Savana 1500 110,000 mi,
Right taillight failed. Replaced and problem solved, but problem recurred at 175,000 and had to be replaced again.
1999 GMC Savana 1500 238,000 mi,
tail lights
when i go on reverse my fuse for my rev. n my signal pop
2000 GMC Savana 1500 151,000 mi,
coroded socket,backlight stopped working
2001 GMC Savana 1500 134,792 mi,
my tail lights work but any of the vehicles brake light are functional