1994 GMC Suburban Owner's Manual - Page 70

Auwmatic Transmission: Move your shift lever to "P" (Park) or "N" (Neutral). Your engine won't start in any other position - that's a safety feature. To restart when you're already moving, use " N ' (Neutral) only. NOTICE: Don't try to shift "P" (Park) if your vehicle moving. If you to is do, you could damage the transmission. Shift to "P" (Park) only when your vehicle is stopped. Manual Transmission: Hold the clutch pedal to the floor, then shift your gear selector to neutral while starting the engine. Your vehicle won't start if the clutch pedal is not all the way down - that's a safety feature. To start your 5.7 Liter (Cock K ) or 7.4 Liter (Code N ) V8 engine: 1. Without pushing the accelerator pedal, turn your ignition key to START. When the engine starts, let go of the key. The idle speed will go down as your engine gets warm. NOTICE: Holding your key in "Start" for longer than seconds at a time 15 will cause your battery to be drained much sooner. And the excessive heat can damage your starter motor. 2. If it doesn't start right away, hold your key in START. If it doesn't start in three seconds, push the accelerator pedal about one-quarter of the way down for 12 more seconds, oruntil it starts. 3. If your engine still won't start (or starts but then stops), it could be flooded with too much gasoline. Try this: Wait 15 seconds to let the starter motor cool down. Then push your accelerator pedal all the way to the floor. Hold it there. Then hold the key in "Start" for no more than ten seconds. Thisclears the extra gasoline from the engine. If the engine still doesn't start, wait another 1 5 seconds and do Step 3 again. Hot Engine Restart (VehiclesWith 5.7L LO5 Engine and Over 8500 lbs. GVWR): If your engine is already hot and then stalls, turn your ignition key to OFF. Then, turn your key to ON, and wait about 20 seconds before you restart your engine. When the engine starts,let go of the key and the accelerator pedal. 2- 14