2000 GMC Safari - Answered Questions & Fixed issues

Do you hear fuel pump coming on ?

Is the engine turning over and not firing? Check the schrader valve on the fuel rail for pressure. Remove the air filter and spray starting fluid into the intake tube. Have a second person turn the engine over till it fires. If you have adequate spark to the cylinder and starting fluid reaching the cylinder, it will fire. Don’t over spray the cylinder.

Does the van have remote keyless entry (RKE) system ? Interior Lighting System Description Vehicles with the optional remote keyless entry (RKE) system have interior lighting controlled by the body control module (BCM). This vehicle uses a delayed interior lighting system. The system functions as follows: • The dome lamps will illuminate when any door is opened. • The dome lamps will remain on for 20 seconds after the last door is closed. • The delay is canceled and the dome lamps will go out when the ignition switch is turned to the ON position. • The illuminated entry function will not operate when the dome lamp defeat switch is in the OFF position. • The interior lighting system is protected from battery rundown by the retained accessory power (RAP) system. The RAP system functions by shutting down interior lights after 10 minutes (when ignition is OFF). Interior Lights Circuit Description When the interior lamps circuits are closed/enabled, the courtesy lamp relay is activated by the two following coil circuits: • CKT 690 (GRY/BLK) which is the courtesy lamp enable output of the body control module (BCM) driving the coil side of the relay. • CKT 1732 (ORN) which is the coil output side of the relay going to the potential grounding switches/sources. When the courtesy lamp relay is enabled, CKT 156 (WHT) (courtesy lamp output) is enabled by the closed contact at the relay and then grounded by CKT 750 (BLK) at G110. Some of these circuits can also be activated with the headlamp and panel dimmer switch. When this happens, the coil output side of the inadvertent power relay is grounded to the body control module (BCM) via CKT 1393 (DK BLU) CKT 40 (ORN) from the courtesy fuse drives both input sides of the inadvertent power relay. When the contact is pulled closed, CKT 1732 (ORN) is supplied power, thus driving any lamps/circuits attached that circuit and providing ground. The body control module (BCM) also monitors the following four door inputs: • CKT 49 (DK BLU) -- LH door jamb switch input • CKT 54 (ORN) -- RH door jamb switch input • CKT 775 (PNK) -- Side door jamb switch input • CKT 656 (YEL) -- Rear door jamb switch input/liftgate strut switch input (depending on option content) When the doors are closed, the body control module (BCM) is in a floating state of 0-2 volts. When the doors are opened, the courtesy lamp relay is activated, sending power to the courtesy lamps. The headlamp and panel dimmer switch also activates the following interior courtesy lamps when the switch is placed in the PARK or HEADLAMP ON positions: • RF power window switch • RH power door lock switch • LH power window switch • LH power door lock switch • LH outside rearview mirror control switch • Rear radio control head The dome lamps can be disabled by closing the dome lamp defeat switch located on the headlamp and panel dimmer switch. -------------------------------------------------------------------------------- Courtesy or Dome Lamps Inoperative Step Action Value(s) Yes No Important: Verify functional bulbs before beginning diagnostic procedure. 1 Did you perform the Lighting Diagnostic System Check? -- YES - Go to Step 2 NO - Go to Diagnostic System Check - Lighting Systems 2 Are all of the courtesy/dome lamps inoperative? -- YES - Go to Step 6 NO - Go to Step 3 3 Activate courtesy/dome lamps With DMM, check for battery voltage from inoperative lamp CKT 1732 (ORN) to ground Is battery voltage present? B+ YES - Go to Step 4 NO - Go to Step 5 4 Repair open in CKT 156 (WHT) between inoperative lamp assemply and S214. Is the repair complete? -- NO - Go to Step 10 -- 5 Repair open in CKT 1732 (ORN) between inoperative lamp assemply and one of the following splices: • S258 • S301 Is the repair complete? -- Go to Step 10 -- 6 Turn the courtesy lamp switch to the ON position Check for battery voltage at BCM C2 cavity B12. Is battery voltage present? B+ Go to Step 7 Go to Diagnostic System Check - Body Control System in Body Control Systems 7 Verify continuity of the following three circuits with DMM: • CKT 1732 (ORN) between courtesy lamp relay and body control module • CKT 156 (WHT) between courtesy lamp relay and S214 • CKT 750 (BLK) between courtesy lamp relay and S206 Are all of the circuits functional? -- Go to Step 8 Go to Step 9 8 Replace courtesy lamp relay. Is repair complete? -- Go to Step 10 -- 9 Repair the inoperative circuit. Is the repair complete? -- Go to Step 10 -- 10 Operate the system in order to verify the repair. Did you correct the condition? -- System OK Go to Step 2

you need the service and repair manual in which you will find the part number and also how to fix the part with diagram you can get the manual from the given link http://toolsnyou.com/

is the truck moving while all of this is going on?

What have you done to try and correct this? Has the brake light switch been tested? Are the fuses OK?

is this a 4.3l

there are typically 3 to 4 lag screws or bolts on them. If you are leaking that bad it is shot, no question there, getting a replacement will show you where they are located on the tank. save yourself a headache and make sure it has the pump and ant level sensors already installed, then when you unplug the connectors clean them with BLACK sandpaper and treat with dielectric grease (the small "buck a pack" ) convenience packs at the counter of the local auto parts store will suffice. If you bought a used tank make sure you clean the connectors on it as well. When you are done, take apart the old tank, save the pump(s) and any sensors as spares. AND if you are really handy with a high wattage soldering iron with a broad head or a wood burner, you MAY be able to melt the broken tank back together, or fill in missing plastic with donor plastic from a heavy food grade plastic bottle. And let me tell you, This (plastic welding) is a majorly useful skill, and is actually the principle that hot glue works under.

Check bulbs. If ok, check fuse. If ok. check brake light switch on brake pedal. If ok, the brake light circuit goes through the signal light switch and it may be defective

Body Control Module (BCM) Inside the dash, above the radio

Someone would need to disconnect all of the circuits including the alternator then reconnect one by one. It could be anything from a stuck relay to a light on.

1.2.3.4.5.6...rear or right side is 1.3.5... front or left side is 2.4.6...

G105 In the thermostat housing G107 In the left rear of the engine block next to the knock sensor

Probably are not any screws--may be held in place with plastic push in connectors. Use flashlight to see from bottom and needle nose pliers (small) or special trim panel tool to pry panel outward.

Don't know the model but this would't be unusual on van / minivan designs.

you can disconnect it by unplugging it when you find the location. all the lights will work normally.

To check is to turn on fan and go thru all selections,vent,floor,defrost,if not blowing thru them right then blend door is not working,here's a replacement. SAVE 20 GET 10 GIFT CARD ON ONLINE SHIP TO HOME ORDERS OVER 100

Make sure the heater control valve is switching when dial is moved to heat. It is located under the evaporator box on the right side of the engine compartment.

Under dash near brake pedal hope it helps

try auto zone