20 Most Recent 1999 GMC Jimmy Questions & Answers

When you cleaned the plugs, how did they look? Were they sooty and black or ahy and white? Could have a bad injector.

Does it crank or not? If no crank then look at the starter or ignition switch. If crank but no start then look at the ignition system. Check for spark at the plugs and also check the fuel pressure. If there is spark try spraying a little starting fluid into the intake. See if it starts and stays running. If it stays running reply back and I will explain why.

you dont

if air bled out correctly ---adjust rear brake shoes

Question moved to Model Category. Check out the videos in the link https://www.google.com/search?q=1999+GMC+Jimmy+and+I+can%27t+get+it+out+of+park ..

Listen for the fuel pump prime cycle.
Have someone listen back by the gas tank....turn the key after it has been off for at least 10 seconds to run position....you should hear a WHIRRRR for about a second or 2.
If it is silent....you may need a fuel pump.
Next give it a shot of starter fluid...if it starts on that...you indeed have a fuel problem.No start....no spark.
If no start and you did hear a pump cycle....then it's most likely a no spark problem.......a common cause is the crank sensor and/or ignition module.

Sounds like you are loosing fuel pressure overnight. Since it takes 70+ psi to start and run, if you have zero pressure in the morning, it would take a long time of cranking to get the pressure back up. If it is low or no pressure, the problem could be a faulty check valve in the fuel pump.

or no -put a socket and ratchet on crank and try moving should move ====timing chain is behind cover behind crankshaft pulley and accessories front middle of block ====dont know your skill level tools or condition of vehicle to most dropping oil pan without proper tools can be extremely difficult buy a repair manual or online search for repair videos pertaining to what you are trying to repair

look under the front of your blazer, just below the bumper, and you will see a little access door in the plastic guard. Open this door, and you will find your oil filter.

it sounds like a neutral safety switch try wiggling on the steering wheel or the gear shifter while trying to start it

Check the Distributor Cap and Rotor Button (If it Has One) they might be worn. I have to replace mine on my 99 Jimmy 4X4 once a year (give or take)

You are experiencing first stages of trans failure, and the 4l60 has a few

Try putting some fuel in. That should start your vehicle.

On my 01 Yukon it was the switch in the dash. I took it apart abd found several bad soldier Joints. I found the same problem in the rear AC controller module. You can buy a new module or take yours apart

Your blend door may be stuck,or the motor for it may be bad.

• A servo is a mechanism, usually a motor of some sort, that drives another mechanism. On a passenger aeroplane, for example, the control surfaces are too difficult for the pilot to operate because there is so much wind pressure against them, so they use hydraulic servos to move the elevator, flaps etc.
• On a car, the drive by wire throttle control is a servo, which is electronically controlled by the computer, depending on the throttle position under the driver's foot.
• In effect, the power steering ram on a car is also a servo, which is powered by the p/s pump, and controlled by the valves in the steering column.
• On a smaller scale, the air conditioner has servos that open and close the relevant air duct flaps when the dashboard controls are shifted to control the flow of air in the car. Please note that on older cars, and some new ones, these flaps are not controlled by servos but by cables.
• The remote controlled central locking on a car has servos in the doors that open and close the door locks when the remote button is pressed. On some cars these door lock servos are small electric motors, on others they use vacuum operated pistons, also called servos.
• Hope this answers your question!

- a servo is a small motor utilized to move a component electrically.

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This might apply .. but it for a 1999 Jimmy: Electronic Fuel Pump Computer Problem6 Cyl Four Wheel Drive Your symptoms could also be do to other issues ... not just the fuel pump relay. Read the embedded link within the 2carpros response. Good luck with your troubleshooting