Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSGMC1999FORWARD CONTROL 4.3 W, STANDARDREPAIR AND DIAGNOSISENGINE MECHANICALSTARTERSTARTING SYSTEMCOMPONENT LOCATIONS
1999 GMC Forward Control 4.3 W, Standard
Component Locations
1999 GMC Forward Control 4.3 W, StandardSECTION Component Locations
COMPONENT LOCATIONS
| Component | Location | ||
|---|---|---|---|
| "C" & "K" Series | |||
| Clutch Pedal Position (CPP) Switch | Top Of Clutch Pedal | ||
| Instrument Panel Fuse Block | Lower Left Side Of Instrument Panel | ||
| Ignition Switch | Under Instrument Panel, On Steering Column | ||
| Remote Battery Stud | At Underhood Fuse-Relay Center | ||
| Starter Relay | In Underhood Fuse-Relay Center | ||
| Transmission Range Switch | Left Side Of Transmission | ||
| Underhood Fuse-Relay Center | Left Side Of Engine Compartment, Near Battery | ||
| "G" Series | |||
| Battery | Underhood, Left Side | ||
| Auxiliary Battery (If Equipped) | Left Frame Rail, Center Of Vehicle | ||
| Battery Junction Block | Right Side Of Engine Compartment, Near Radiator | ||
| Glow Plug Relay | Top Right Side Of Engine | ||
| Instrument Panel Fuse Block | Lower Left Kick Panel | ||
| Park Neutral Position (PNP) Switch | Left Side Of Transmission | ||
| Starter Relay | Underhood Fuse-Relay Center | ||
| Underhood Fuse-Relay Center | Above And Left Of Battery | ||
| "L" & "M" Series | |||
| Battery | Underhood, On Left Side | ||
| Ignition Switch | Upper Right Side Of Steering Column | ||
| Instrument Panel Fuse Block | Lower Left Side Of Dash, Next To Left Kick Panel | ||
| Park Neutral Position (PNP) Switch | Left Center Of Transmission | ||
| Starter Enable Relay | Underhood Fuse-Relay Center | ||
| Underhood Fuse-Relay Center | Near Battery | ||
| "P" Series | |||
| Battery Junction Block | Left Side Of Engine Bulkhead, Above Relay Bracket | ||
| Clutch Pedal Position Switch | Left Side of Brake Pedal Bracket | ||
| Crank Fuse | |||
| Commercial Van | In-Line Fuse, Right Side Of Steering Column | ||
| Motorhome | Auxillary Fuse Block | ||
| Park Neutral Position (PNP) Switch | Left Side Of Transmission Near Bellhousing | ||
| Starter Relay | |||
| Commercial Van | On Relay Bracket, Under Battery Junction Block | ||
| Motorhome | Engine Wiring Harness Junction Block | ||
| Fusible Links | Near Starter Solenoid & Engine Wiring Harness Junction Block | ||
| "S" & "T" Series | |||
| Clutch Pedal Position & Cruise Control Shutoff Switch | On Clutch Pedal Support Bracket | ||
| Instrument Panel Fuse Block | Left Side Of Instrument Panel | ||
| Park Neutral Position (PNP) Switch | Left Side Of Automatic Transmission | ||
| Starter Relay | Underhood Fuse-Relay Center | ||
| Underhood Fuse-Relay Center | Left Front Fenderwell | ||
| "U" Series | |||
| Fusible Link "A" & "Z" | Bolted To Starter Solenoid | ||
| Fuse Block | Right Side Of Instrument Panel, In Right Front Door Opening | ||
| Ignition Switch | Part Of Steering Column | ||
| Powertrain Control Module (PCM) | Engine Compartment, In Air Cleaner Assembly | ||
| Park Neutral Position (PNP) Switch | Left Rear Side Of Engine Compartment, On Transaxle | ||
| Underhood Electrical Center | Engine Compartment, Front Of Right Wheelhouse, Above Battery | ||
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.