For 1990-2009 cars

# 3.8L V6 GOODWRENCH REPLACEMENT ENGINES

#### VEHICLES AFFECTED: 1979 Passenger Cars With V.I.N. Engine Code 2 and 1980-1984 Passenger Cars With V.I.N. Engine Code A

A GM Goodwrench engine (GM Part No. 25519459) is now available through WDDGM for some current and past-model vehicles equipped with 3.8L, V-6, 231 cu. in. engines. All GM Goodwrench engines are manufactured with new components.

#### Installation Benefits

These replacement engines will provide prompt service and customer satisfaction for owners of these vehicles. The applications for the GM Goodwrench 3.8L, V-6 engine are as follows; 1979, only engines with V.I.N. Code '2' and 1980-84 engines with V.I.N. Code 'A'.

Some 1979 and 1980 models will require use of original oil pan and oil pick-up pipe.

#### Includes

Cylinder block assembly, connecting rod and piston assemblies, crankshaft (which will accept an automatic or manual transmission), camshaft, cylinder head assemblies; including valve trains, camshaft and crankshaft sprockets with chain, timing gears and timing cover, oil pump and screen, oil pan, four (4) quarts factory fill oil, and an installation instruction sheet.

#### Does Not Include

Intake manifold and related plumbing, exhaust manifolds, alternator, distributor with its coil and wiring, torsional damper, flywheel, clutch housing, clutch and related parts, carburetor, fuel pump, water pump, spark plugs, pulleys and belts, (these parts are generally transferable from the engine that is being replaced).

When using this engine, the water pump, fuel pump, intake manifold gaskets and intake manifold end seals must be replaced.

The special instructions below should be followed when using this new assembly:

1979 Remove and discard oil pan and oil pump suction pipe and screen assembly from the new engine assembly. Take the same parts from replaced engine and install them on the new engine.

1980 If the oil dipstick is stamped with Part Number 1257413 (red handle), then follow the instructions above from 1979. If the oil dipstick is stamped with Part Number 2550547 (black handle), assembly can be used as supplied with this engine.

1981 No special instructions.

1982 thru Present Three (3) accessory drive mounting holes located front and rear of the cylinder heads must be tapped to M10 x 1.5 threads.

#### CAUTION:

Care should be taken when performing this operation as the 3/3-16 threads can be stripped if tap is started improperly. After tapping the holes, the metric attaching bolts from the replaced engine can be used.

#### Service Parts

GM Goodwrench 3.8L, V-6 engines use current model parts. When servicing vehicles with 3.8L engines, it will be necessary to determine if a GM Goodwrench 3.8L engine has been installed. Each GM Goodwrench 3.8L, V-6 engine will have a distinctive label on the left rocker arm cover making the engine readily identifiable for ordering service parts.

#### Warranty Information

Any warranty claims submitted for the installation of a GM Goodwrench 3.8L, V-6 engine will require Zone authorization.

Use the most applicable labour operation from the Canadian Labour Time Guide and claim the following times.

1979 - 1984 Models 7.0 (All Models)

Add: a. With A/C - 1.3 'A' Car - 0.3 All others b. With P/S - 0.2 'B,C,,E,,G' With A.I.R. - 0.2 'B,C,E,C' With Turbo - 1.2 'E' Car With Turbo - 1.6 'G' Car

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.