Buy 2019 Chevrolet Express 3500 LT Standard Passenger Van 4.3L Vortec V6 A/T Exhaust Manifold Heat LITER, Right, Wagon - OEM Chevrolet Part # 12578031

Shield. Heat. Exhaust Manifold Spark Plug (High Tension). Insulator.
A Heat reflective barrier to prevent items from coming in contact with the hot Exhaust Manifold.

Exhaust Manifold Heat Shield

Fits CTS

5.7 & 6.0 LITER. 6.2 LITER. Coupe, 6.2 LITER. Wagon, 6.2 LITER.
Exhaust Manifold Heat Shield - Repair or Replace
A tinny ticking, buzzing, or rattling noise that sounds like it's coming from under your 2019 Chevrolet Express 3500 may be a bent or rusted exhaust heat shield.