20 Most Recent 2000 GMC Sierra - Page 5 Questions & Answers

pick up trucks are probably the easiest fuel tanks to replace because its already high enough to work on. first remove gas from tank then remove fill tube and vent tube from tank by loosening both hose clamps on each rubber hose (allows hose to move) spray a little wd-40 on hose ends and pry off when you start to drop tank in a few minutes next try to spray top of bolts that hold the straps in place by the rear-end then remove bolts (place a floor jack with a block of wood on it in center of tank to hold in place first) swivel straps out of the way. next lower tank a little bit pry hose off from earlier then disconnect the quick connectors that hold the fuel lines on unplug wire harness then lower jack and tank. You will probably have to pull jack out from under tank to get the tank on the ground is you can get it out from under the truck. hope this help and please rate my solution. THanx

Is the battery OK? Check your starter electrical circuit.

short in elc, from PMC to transmission

yes should be on driver side of tranny there is a little lever where cable was hooked to should be able to shift it by hand

If it has one, it should be on top of the intake near the firewall.

The 4WD transfer case encoder motor position sensor or the selector switch may fail causing the service 4WD message to be displayed. Fault code(s) stored in the transfer case control module will be of assistance in determining the exact fault causing the message to be displayed. I have found out that usually the two ground wires that are attached to the frame right under the front of the driver's door is the culprit that causes the 4wd selector switch in the dash to go bad. Chevy had the bright idea of applying the undercoating and/or not cleaning the point of contact of the ground wires before they bolted them to the frame therefore overtime moisture, dirt and corrosion affects the contacts of the threads of the bolts which are the only source of ground the two sets of wires have. There are 2 things you will need to do. First you will need to take the bolts out and use a wire brush to clean down to the metal of the frame as well as the bold threads and ends of the wire attachments and then reattach the ground wires to the frame (time to complete - less than 5 minutes). Second you will need to replace the 4wd selector switch in the dash. You can purchase this online from Amazon (Dorman 901-062 4-wheel drive switch for $31.15 - no tax or shipping and handling). To replace, gently pull the outer trim of the dash out by using just your fingers. You do not need to completely remove it, just pull it out far enough so that you can pull the old switch out of it slot. Then unplug the two plugins located in the back of the switch. Plug them into the new switch and push the switch back into the slot and then push the trim back into place (time to complete - less than 5 minutes). This should take care of your problem. Most often, people make the mistake of just switching out the dash switch and when that does not correct the problem they then replace the more expensive and time consuming actuator motor and location indicator on the transfer case that does not need to be replaced. I should point out that when the Service 4WD light comes on

Connect a manual oil pressure gauge to the port that the pressure sender is connected to. It's located behind the distributor on the top of the intake manifold.

Check the fuse and wiring