GMC Vandura

remove the arm rest cover , you can see the bolt

follow the upper rad hose from the radiator to the engine, it should be in the part that the upper hose connects to and bolted to the engine (if memory serves), this based on a g2500 with a 5.7

Is the "Security light" on the dash active when it wont start?

5 liter is the engine size. In non-metric its 305cid

On the back of the motor next to the transmition.

Starcraft supplied a complete wire diagram for what they installed..I have one for my '88..

What about it?

My thought is that 8 lugs indicate that you have 3/4 ton or possibly 1 ton wheels and axles while 5 lugs indicates that the wheels and axles are 1/2 ton variety.

At the rear of the engine block, drivers side, near the distributer..not easy to see.

The unit is over the back door, The pipes/tubes for both A/C and heat run from the front of the van along the underside of the body on the frame . The A/C evaporator for the rear unit is located at the rear of the back drivers side wheel . If it's a conversion Van there will be a simple piece of carpet over it.

Under the Drivers Seat.

To replace the serpentine belt on a 1991 GMC van, first, ensure the engine is off and cool. Locate the serpentine belt routing diagram, usually found on a sticker under the hood. Use a wrench or ratchet to loosen the tensioner pulley, then slide the old belt off the pulleys. Install the new belt according to the routing diagram, ensuring it is properly seated on all pulleys, and then release the tensioner to secure the belt in place.

To charge the AC on a 1995 GMC 2500 Vandura, first locate the low-pressure service port, typically found on the larger diameter line between the compressor and the evaporator. Attach a refrigerant gauge with a can of the appropriate refrigerant (usually R-134a) and follow the instructions on the can. Start the engine and the AC system, then slowly add refrigerant while monitoring the pressure gauge to ensure it stays within the recommended range. Be cautious not to overcharge, as this can damage the system.

The coolant capacity of a 1981 GMC Vandura typically ranges from about 12 to 16 quarts, depending on the specific engine configuration and whether the vehicle is equipped with a heater. It's advisable to check the owner's manual or a service manual for the exact specifications for your particular model.

The brake light wires on a 1992 GMC Vandura are typically color-coded as follows: the positive wire is usually light green, while the negative wire is often black. However, it's always best to consult a specific wiring diagram for your vehicle, as colors can sometimes vary based on the vehicle's configuration or modifications.

In a 1994 GMC Vandura, the transmission relay is typically located in the under-hood fuse box. This fuse box is usually found near the battery on the driver's side of the engine compartment. You may need to consult the owner's manual or a service manual for specific details on the relay's position and identification.

The weight of a 1989 GMC Vandura mini bus varies depending on the specific model and configuration, but it typically ranges from about 4,300 to 6,000 pounds (1,950 to 2,700 kg). The weight can be influenced by factors such as engine size, seating capacity, and any additional equipment or modifications. For precise specifications, it's best to consult the owner's manual or manufacturer details.

The bolt pattern for a 1990 GMC 2500 Vandura is typically 8x6.5 inches (also known as 8x165.1 mm). This means there are eight bolt holes, and the diameter of the circle formed by the centers of these holes is 6.5 inches. It's always a good idea to verify the specifications for your specific vehicle configuration, as they can vary based on the model and options.

The recommended spark plug gap for a 1993 GMC Vandura 3500 is typically between 0.035 and 0.045 inches. It's essential to refer to the owner's manual or a repair guide for the precise specification, as it can vary slightly based on the engine type or specific models. Always ensure the spark plugs are properly gapped before installation for optimal engine performance.

The fuel pressure on a GMC G3500 Vandura typically ranges from 9 to 13 psi for the fuel injection system. However, it's essential to refer to the specific year and engine type, as variations may exist. Always consult the vehicle's service manual for the most accurate specifications.

To remove the rear axle on a 1988 GMC Vandura 2500, first ensure the vehicle is securely lifted and supported on jack stands. Disconnect the brake lines and any wiring connected to the axle, then remove the differential cover and drain the fluid. Next, unbolt the axle from the leaf springs, and finally, remove the axle shafts and differential assembly by unbolting them from the housing. Carefully slide the rear axle out of the vehicle.

The recommended tire pressure for a GMC Vandura 2500 typically ranges between 50 to 70 PSI, depending on the specific model year and load conditions. It's essential to check the owner's manual or the tire information placard located on the driver's side door jamb for the exact specifications. Maintaining the correct tire pressure ensures optimal performance, fuel efficiency, and safety.