Last post on Feb 12, 2012 at 1:46 PM
You are in the Chevrolet Blazer
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Chevrolet Blazer, GMC Jimmy, Auto Repair, SUV
#66 of 115 I NEED HELP!!!!!!
Feb 11, 2008 (9:41 pm)
Hi i recently bought a used 1994 GMC Jimmy and i have some problems with the 4-wheel drive switch. When i goo into 4-wheel high it will not let me i can feel the gears trying to switch but it doesnt work, but when i switch it into 4-wheel low it works perfectly i dont know if i should replace the switch or it has somethin to do with the transfer case itself can someone help me
#67 of 115 '99 Blazer 4x4 grinding
Feb 15, 2008 (7:53 am)
I have recently acquired a '99 Blazer w/ 3 button electronic 4WD. It has almost 190,000 miles on it and has already become a money pit. I've replaced the transmission and torque converter, intake manifold gasket and both upper and lower ball joints in a 2 month period. Now I'm concerned about the 4WD. When I got the truck the 4WD worked fine..shifted on the fly smoothly no grinding. After I got it back from the tranny/ torque converter work there was a nasty grinding when i put it into at 50mph and was told by the mechanic that did the transmission work that I should always be stopped and in Park or Neutral to put it in 4WD regardless of what the manual said. That seemed to be fine but last night (I live in Michigan with lots of snow right now) I put it in 4H just to get it into the driveway and when the tires started spinning there was a terrible grinding from underneath. I am still able to move it from 4H to 2H (haven't tried 4L) and it seems to drive fine in either with no grinding unless the tires spin. Any clues would be greatly appreciated. I have put almost $3500 into repairs on this truck (which is more than I paid for it in the first place last November).
#68 of 115 Re: '99 Blazer 4x4 grinding [jerseyj2]
Feb 18, 2008 (7:52 pm)
I have the same problem. Talked to mechanic, suggests there is a small motor that switches the 2wd and 4wd. I'm taking in my car in 1-2 weeks..I hope that fixes it.
#69 of 115 Re: 2002 4X4 stuck in 4L [posblazer]
Feb 23, 2008 (9:37 am)
Where is the "vacuum switch under the hood seal" located? I am not getting vacuum to my actuator located under the battery tray. I have checked all the vacuum hoses and all are o.k. Do you know where the vacuum source is located ? If I connect a vacuum source to the actuator I can get the 4WD to operate. I have what looks like a sensor that is located between the battery and the coolant reservoir and is mounted on the fender well. One end has an electrical connector and the other end has a vacuum hose on it. Is this the switch you are refering to? Thanks.
Feb 24, 2008 (1:09 am)
I have 1994 gmc jimmy 4wd when i push the 4 hi or 4 lo the light flashes an i hear what sound like a relay then the light goes out no 4wd any help thanks.
May 24, 2008 (8:35 am)
where is the fuel filter for a 1992 S10 blazer 4x4 located?
#72 of 115 Re: leitte [leitte]
May 24, 2008 (1:31 pm)
Isn't it in the frame rail under the drivers door?
#73 of 115 Transfer case vacuum switch?
Jul 01, 2008 (7:03 am)
1993 Jimmy 4WD
Which hose goes to what pole of the 3 pole switch?
#74 of 115 4WD - 2W
Jul 02, 2008 (11:28 am)
Can I remove the front driveshaft on my NP 233 and drive it 2WD? I mean will this work or cause problems?
#75 of 115 99 chevy s-10 blazer
Aug 01, 2008 (9:48 am)
4-wheel drive is locked in wont go back to 2 wheel drive 4-wheel low light flashes when i push it electronic push button 4-wheel drive can anyone tell me what the problem might be