Top 10 1999 GMC Jimmy Questions & Answers

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heater blower motor sometimes works

I have a 1999 GMC Jimmy sometimes the heater blower motor works and sometimes it doesn't. It comes on sometimes when you are driving it .

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Answer

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where is the motor as i think its burnt out.

Posted on Sep 28, 2009

Question

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what is the check gauges light

what is the check gauges light

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Answer

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CHECK GAGES light (1) indicates a potential engine failure(low oil pressure, low coolant, coolant overheating) has occurred.
· Check gages and shut down engine. Gages should read as follows: Oil pressure 5 to 10 psi (34 to 69 kPa) at idle; Water Temp gage below 230 degrees (110 C).
· Check engine oil level (Para 2-11) if OIL PRESS gage indicates low reading. Check coolant level (Para 2-11) if Water Temp gage indicates high reading. Notify Unit Maintenance if levels are low.

If CHECK ENGINE light (2) is on, check engine oil pressure gage (3) and water temperature gage (4). If both indicate normal, proceed with mission and then notify Unit Maintenance. If either one does not indicate normal, stop engine immediately and notify Unit Maintenance


Posted on Oct 16, 2009

Question

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1999 GMC Jimmy Running Hot w/ Engine coolant reservoir empty

We have had our Jimmy into a local repair place twice for the same problem. Today it happened again for the third time. The engine begins to run hot and the coolant reservoir is found to be empty.
The first time they replaced the thermostat and water pump. Refilled the coolant system with proper mix of antifreeze. Within one week of being home the Jimmy did the same thing overheating and the reservoir was found to be empty again. Second repair trip they replaced the radiator, fan clutch, and the thermostat for a second time. Within three days of short drives (less than 5 miles each day) the Jimmy started overheating and the reservoir was found empty again.

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Answer

  • Most Helpful of 2 Answers

I guess the burning question is , where is the coolant going.
Is this a 4.3 engine? How many miles does the vehicle have?
Has the intake gasket been changed?
I'm guessing a can of "Bars Leak" may cure your problem.
Let me know.
Regards,

Posted on Apr 03, 2009

Question

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is it ok to go from 235 70 r15 tires to 235 75 r15

is it ok to go from 235 70 r15 tires to 235 75 r15 on a 1999 gmc jimmy

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Answer

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Yes its ok, the 75 tires are a little taller. your speedometer will not read correct speed, you will actually be going faster than what it reads.

Posted on Sep 18, 2009

Question

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02 GMC Sierra 4.3 V6 P1345

I just bought this truck about 2 months ago. Just recently the SES light came on. Had it read. Turns out to be a P1345 code. I have replaced both the cam and crank sensors. Since then when first accelerating at very low rpm's I can feel the misfire. Or at high speeds(70-75) around 2000rpms the same misfire happens. I got off the highway when this happened. Had the truck scanned again. Same code P1345 and a misfire code. I have recently(past 2weeks) changed the plugs wires cap and rotor(same time as the cam sensor).

With the recent plugs wires cap rotor and cam sensor the truck ran fine for a couple of days then the P1345 came back. The truck ran fine. Had the scan tool hooked up and it cycled and no misfires. About 4 days later the light came back on again(each time it was cleared). Scanned again and it was not cycling. Changed the crank sensor. Now cycled a random misfire after the truck had been running about 20min, but then the computer cleared the misfire(no code thrown). Drove the truck around and about 3 hours later when I started the truck the SES came back on. Drove it around and could feel it misfiring again but only at low speeds(didnt want to push it on the highway).

I need help because this is starting to **** me off.

I did read online that when I replaced the cap rotor and cam sensor that the distributor possibly might be off a bit and could cause this.

I did get all of the repair reciepts when I bought the truck and one of them was the distributor was replaced through a recall.

Any help?

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Answer

  • Most Helpful of 5 Answers

Well that sounds like a tough one , But here is a site worth checking out . Several mechanics use this it to help out people like your self that are frustrated and are getting P #$%$# off ! Good luck

http://www.obd-codes.com/forums/search.php?search_id=active_topics

Posted on Mar 09, 2009

Question

  • 1,779 People Helped

how to change my front differential seal and

How to change my front differential seal and bearing ? passenger side.
I bought a new wheel bearing because of a humming sound on passenger side and doing so saw leaking seal and maybe the humming was commng from differential inside bearing ?

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Answer

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if ure changing passenger side a washer will drop behind the 4x4 shift fork in the diff as soon as u pull the cv axle out and u will have to drop the axle tube to reinstall this

Posted on Mar 01, 2010

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  • 1,684 People Helped

reverse is gone on 1995 chevy blazer s10-goes forward just fine

1995 chevrolet blazer LS 4.3L Model:S10506-my reverse went out, what do I do? All the forward gears work fine, I just took a 10 hour trip with it. Before the reverse went out it always acted a little funny(in reverse). It would kinda shudder when gas was applied during reverse and then one day reverse was gone. Please help!

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Answer

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reverse clutch went out rebuild transmission

Posted on Feb 21, 2009

Question

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transfer case control module

Where is the transfer case control module located in a 1999 jimmy.I was told there was a panel on the passenger side where this is but I do not have a panel. There are some plug ins behind the glove box but I am not sure what this part looks like.Any help would be appreciated.Thank you

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Answer

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Its behind the kick panal on the pssengers side.

Posted on Nov 25, 2008

Question

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1999 GMC Jimmy won't start.

My Jimmy starts one day then won't start other days.

I cannot hear the Fuel Pump charge the system when I turn the key.

I have found the Fuel Pump fuse but I cannot find out how to check it if it is good or bad.

The next step would be to check the Fuel Pump Relay.

Is there a way that I could check and change my Fuel Pump Relay easily without going to the garage?

Please help!!

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Answer

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firstly where is fuel pump relay as i have never seen a GMC jimmy sorry about that but have you ever seen a foden ?? well the first thing is to check the fuse,if fuse is ok which can be checked by looking at it as its transparent or a piece of wire with a light bulb .across the battery.to find the relay is easy if you dont know where it is,When this piece of americana decides to work just turn ignition on and listen for the click of relay ,then when it doesnt start listen for click again or rather an absence of a click,sounds more like a dodgy pump in the tank or the connections going to it.when it wont start try thumping the fuel tank with the ignition on and if it is a sticky pump you might hear it start then at least you will know where the fault is.Another fault that i have come across with relays is that where the relay is passing a heavy load then its possibe for the contacts to burn inside the relay.When this happens then if it is possible to seperate the relay cover and clean the contacts with a points file (remember them ) or a piece of fine emery paper if the cover breaks taking it apart then use a bit of black insulating tape to repair the cover.Thats assuming the pump is in the tank and not bolted to the chassis near the fuel tank but that design with external pump i havent seen on a europeon car for nearly 20yrs .

Posted on Nov 05, 2008

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abs light comes on while driving

abs light comes on while driving

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Answer

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Hi there,

In the event of the ABS light coming on whilst driving, means the ABS computer has detected either a malfunction, or one of the sensors is not operating as it should.

When the ABS light comes on, the computer will de-activate the ABS function of your braking, and your vehicle will now be operating under normal brakes (i.e. no anti-locking ability) and will now be susceptible to wheel lock-up under extreme emergency braking.

I would highly recommend you have the ABS computer scanned for 'trouble codes'. This will tell you "where" in the ABS system, the fault lies.

It could be anything from a simple wheel sensor needing adjustment, to a faulty pump.

As with all modern vehicles, your respective onboard vehicle computer will 'tell you' where the problem lies.


Regards,

Posted on Oct 11, 2009

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1999 gmc jimmy will start in below zero

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