[Harley03joe]

Originally Posted by FirstOwner69

Your lug nuts are either 1/2" (drum brakes before 1971) or 9/16" (disc brakes 1971 and later). The correct nuts are commonly called dual thread lug nuts and are available on eBay as well as other sources.

9/16"
http://www.ebay.com/itm/32-LUG-NUTS-...9WD1vm&vxp=mtr

1/2"
http://www.ebay.com/itm/32-LUG-NUTS-...VWD11e&vxp=mtr

Here Is A List I Found On Line
So First Owner 9/16 Your So Right
Thanks Again Bro
Joe

CHEVROLET/GMC TRUCK/VAN/SUV -
1/2 TON BLAZER, JIMMY, SUB FULL 71-91 5X127.0 1/2-RH NUT 78.1
1/2 TON BLAZER, JIMMY, SUB FULL 71-91 6X139.7 7/16-RH NUT 108
1/2 TON BLAZER, JIMMY, SUBURBAN 92-on 6X139.7 14mmX1.5 NUT 78.3
TAHOE, YUKON 2X4 92-99 5X127.0 14mmX1.5 NUT
1/2 TON BLAZER, JIMMY, SUBURBAN 00-on 6X139.7 14mmX1.5 NUT 78.3
1/2 TON TRUCK ALL MODELS 2X4 67-87 5X127.0 1/2-RH NUT 78.3
1/2 TON TRUCK ALL MODELS 2X4 88-98 5X127.0 14mmX1.5 NUT 78.3
1/2 TON TRUCK ALL MODELS 4X4 67-87 6X139.7 7/16-RH NUT 108
1/2 TON TRUCK ALL MODELS 4X4 88-98 6X139.7 14mmX1.5 NUT 78.3
1/2 TON TRUCKS 2X4 & 4X4 99-on 6X139.7 14mmX1.5 NUT 78.3
3/4 TON TRUCK 2X4 & 4X4 67-on 6X139.7 1/2 or 14mm NUT 100.7
3/4 & 1 TON C20, C30, K20, K30 65-87 8X165 9/16" NUT
C2500-K3500 1 TON & HD 2X4 & 4X4 88-04 8X165 14X1.5 NUT
ASTRO/SAFARI 5-Mar 6X139.7 14mmX1.5 NUT 78.3
AVALANCHE 1500, 2WD, 4WD 6-Feb 6X139.7 14mmX1.5 NUT 78.3
AVALANCHE 2500, 4WD 02-on 8X165 14mmX1.5 NUT 125
COLORADO, CANYON 04-on 6X139.7 12mmX1.5 NUT 100.7
COLORADO 15-on 6X120 14mmX1.5 NUT 66.9
CYCLONE, TYPHOON ALL 5X120.7 12mmX1.5 NUT 70.3
EL CAMINO, CABALLERO 64-81 5X120.7 7/16-RH NUT 70.3
EL CAMINO, CABALLERO 82-87 5X120.7 12mmX1.5 NUT 70.3
ENVOY 02-on 6X127 12mmX1.5 NUT 78.3
EQUINOX 2005-2009 5X115 12mmX1.5 NUT 70.3
EQUINOX 10-on 5X120 14mmX1.5 NUT 66.6
LUMINA APV 90-96 5X115 12mmX1.5 NUT 70.3
S-10, S-15 BLAZER, JIMMY, SONOMA 82-on 5X120.7 12mmX1.5 NUT -
S-10, S-15 BLAZER, JIMMY, SONOMA 83-on 5X120.7 12mmX1.5 NUT -
SAVANA 1500 01-on 5X127.0 14mmX1.5 NUT -
SSR 04-on 6X127 12mmX1.5 NUT 78.3
TRACKER 98-on 5X139.7 12mmX1.25 NUT -
TRAILBLAZER 02-on 6X127 12mmX1.5 NUT 78.3
TRAVERSE 09-on 6X132 14mmX1.5 NUT 74
UPLANDER 2005 5X115 12mmX1.5 NUT 70.3
UPLANDER 06-on 6x115 12mmX1.5 NUT 70.3
VAN G-SERIES 1/2 TON 71-96 5X127.0 1/2-RH NUT -
VAN G-SERIES, 3/4 TON 96-97 6X139.7 14mmX1.5 NUT -
VAN EXPRESS 1500 97-02 5X127 14mmX1.5 NUT 78.3
VAN EXPRESS 1500, SAVANA 03-on 6X139.7 14mmX1.5 NUT 78.3
VAN EXPRESS, SAVANA 2500, 3500, 97-on 8X165 14mm1.5 NUT 117
VENTURE 97- 5X115 12mmX1.5 NUT 70.3
SUBURBAN 2X4 & 4X4 65-87 8X165 9/16" NUT