V 3500 P/U 4WD V8-454 7.4L VIN W 4-bbl (1988)
FIGURE 3
6.
Route the vacuum line under the dash to the glove box area (see Figure 3).
7.
Open the glove box and fold the compartment down to gain access to the rear of the dash. Locate the Max A/C line going to the plenum valve and
air recirculation door valve. The line is black plastic with an orange stripe.
8.
Cut the line and insert Tee coupling. See view "A" in Figure 3. Use 3/32 rubber vacuum line for the coupling. Install the added vacuum line to the
bottom leg of the Tee.
Accumulator Insulation Installation:
