Thanks- not sure how I missed themI saw blackname plates in the list... didn't look for the catback though.
ah thanks I must have overlooked that page.. still couldn’t find the black nameplates for the Yukon but I prob missed those too!Catback is on page 58.
"LPO, Cat-Back Performance Exhaust, increased horsepower and torque, decreased backpressure (dealer-installed) 1 - Not available with (VQZ) polished exhaust tip, LPO or (VTA) Black exhaust tip, LPO. 2 - Not available with (LM2) Duramax 3.0L TurboDiesel I6 engine, (VQZ) polished exhaust tip, LPO or (VTA) Black exhaust tip, LPO. 3 - Not available with (LM2) Duramax 3.0L TurboDiesel I6 engine. "