Last post on Dec 02, 2013 at 7:15 PM
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GMC Jimmy, SUV
#295 of 313 Re: 1997 GMC Jimmy 4x4 no vacuum to actuator. [zorad1000]
Dec 12, 2011 (5:13 pm)
I checked the front axle switch, it seems ok. although there is 12 volts at the switch conector. I was expecting 5 volts... I took the new vacuum switch out of the transfer case again and pushed the ball in by hand and rotated the front drive shaft with the engine running and the front wheels turned, so the actuater, cable and axle are ok. I removed the transfer case shift motor and shifted the shaft by hand. The part that pushes the switch up moved as I turned the shaft. I then installed the vacuum switch with the case in 4lo and turned the front driveshaft by hand with the engine running. The front wheels did not turn. My conclusion is that the new switch is defective or wrong. I will get annother switch tomorrow this time from the GMC dealer.
#296 of 313 Re: 1997 GMC Jimmy 4x4 no vacuum to actuator. [zorad1000]
Dec 13, 2011 (5:27 pm)
I fixed mine by changing the encoder motor on the transfer case. It sounded like it was going in but it didnt work sometimes, Hope you get yours fixed soon four wheel drive season is upon us
#297 of 313 Re: 1997 GMC Jimmy 4x4 no vacuum to actuator. [zorad1000]
Dec 15, 2011 (4:22 pm)
I was right. The new switch that I put in saturday was either defective or wrong. I just put in a new OEM switch and the 4wd works perfectly now. Apparently there are two different transfer cases mine is a 233-c I don't know the number of the other case. The part no. for the OEM switch is 89059420 . I will return the defective switch tomorrow for a refund. I hope that my experience with this has helped someone. Lesson learned, use high quality parts the first time. I don't know if the two different cases use two different switches or not, I'll find out tomorrow.
#298 of 313 Re: 2001 GMC Jimmy 4x4 will not shift into 4hi [abbyteed]
Jan 05, 2012 (9:35 am)
Check vacuum line coming off the PVC going to in front of the fire wall drivers side for leaks!
#299 of 313 Re: 1997 GMC Jimmy 4x4 no vacuum to actuator. [zorad1000]
May 02, 2012 (6:57 pm)
Well the actuator has failed again because of trans fluid getting in it . I guess I should have blown out the lines the first time. However I have found a manual cable shift kit for the front axle. I will install this manual shifter cable soon. the kit is available at Summit. costs about $160.
May 03, 2012 (11:40 am)
I recently had some tires swapped over from winter to summer and upon getting a front end alignment I was told 2 bolts were rounded. One on each side and one front and one rear. Is this a hadr fix? Sould I just change the nuts rounded or just change all 4 bolts. How hard is it and what do I need. Thanks Mike
#301 of 313 Re: 1997 GMC Jimmy 4x4 no vacuum to actuator. [zorad1000]
May 05, 2012 (3:47 pm)
my friend trans fluid is getting in because transfercase seal is leaking into your transmission I had to fix mine hope this helps
#303 of 313 99 SLT front differential not engaging
Jun 29, 2012 (3:45 pm)
The auto 4wd, the 4wd hi and the 4wd lo lights just blink until 2wd button is pushed. The drive shaft from the transfer case turns but the front differential wont engage. Have checked fuses and replaced actuator. The battery was disconnected for a good 45 mins while I played around with the actuator. The fluid level in the differential is good. Have tried to trace the vacuum line but I keep getting lost.
#304 of 313 Re: 2000 GMC Jimmy Hub Bearings [jej0426]
Nov 23, 2012 (6:45 pm)
I have had the same problem. I just had both front wheel hubs replaced at 107K miles for $750. I had to have mine replaced because to anti-lock
brake sensor failed in the left hub and the right one was noisy. I don't think there is a solution for this problems. Just like there seems to be no solution for leaking intake manifold gaskets or the flaky fuel gauges or the failing fuel pump. The is a nice "little" SUV, when it runs!