GM Service Manual Online
For 1990-2009 cars only

Info - Elimination of Exhaust Hanger

Subject:Elimination of Exhaust Hanger

Models:1999 Chevrolet and GMC S/T 4 Door Utility Models
1999 Oldsmobile Bravada



Built on or after the following VIN Breakpoints:

Make

Plant

VIN Breakpoint

Chevrolet

Linden

XK146516

GMC

Linden

XK506710

Chevrolet

Moraine

X2146868

GMC

Moraine

X2517257

GMC

(Envoy)

Moraine

X2951040

Oldsmobile

(Bravada)

Moraine

X2708149

This bulletin is to inform dealers that S/T vehicles built on or after the above VIN breakpoints will not have an exhaust hanger bracket and isolator at the rear of the catalytic converter (Inboard side).

Do not install an exhaust hanger on the S/T vehicles built on or after the VIN breakpoints shown above. The exhaust hanger was eliminated in production and is no longer needed as a result of design changes made to the exhaust system.