- #2 of 76
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Re: 2001 Chevrolet Blazer 4WD [wally1937]
by repairdog
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Apr 10, 2007 (11:14 am)
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Replying to: wally1937 (Apr 10, 2007 8:28 am)
ABS sensors are contained in the new hubs so whoever installed them probably ripped one of the senor wires or didn't plug the connector in all the way - get them to fix it. Without looking at the wiring diagram I'd say the ABS (brakes) has to be working due to the cruise is kicked off by the brake being applied so computer assumes brake on or problems so deactivates the cruise.
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- #3 of 76
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trupp@hutz.co.za
by hangwaiter
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Apr 18, 2007 (4:08 am)
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most automatic vehicles tend to move(in DRIVE) immediately once you release the brake.
However, my 2001 blazer just stands still even when the engine is cold (and idles faster). On pushing the accelerator slowly, the engine revs up to 1500 - 1600 rpm and only then +- half a second later you feel the torque convertrer doing its job and the car starts moving.
does this indicate a problem or is it normal for blazers?
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- #4 of 76
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Re: trupp@hutz.co.za [hangwaiter]
by repairdog
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Apr 18, 2007 (8:59 am)
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Replying to: hangwaiter (Apr 18, 2007 4:08 am)
This is a problem. Should go immediately, unless the rear calipers are locking up or if pulling a heavy trailer. Check the trans fluid level and fill if required - engine idling and note the hot and cold lines on the stick. If full get the filter changed next.
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- #6 of 76
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2003 Chevy Blazer recurring 4wd problem
by johnnyd69
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Dec 08, 2006 (8:36 am)
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I have a 2003 2dr. Chevy Blazer and the 4wd just went for the third time (once a year for the past three years). Since I'm leasing it, it is being fixed free of charge, but my lease is running out in March and I have to decide whether or not to keep it (and won't if this is a chronic problem with the 4wd). Has anyone heard of this being a chronic problem (i.e. bad units being produced)?
Thanks!
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- #7 of 76
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Re: 2003 Chevy Blazer recurring 4wd problem [johnnyd69]
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Dec 09, 2006 (3:49 am)
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Replying to: johnnyd69 (Dec 08, 2006 8:36 am)
All newer 4wd systems seem to have some quirks due to the move to shift on the fly smart systems. You never said what problems you had but if you read the posts most are small things that the owner can easily fix. Search other forums and see if your "next" vehicle has any problems. If not, then turn it in. The ZR 2dr was pretty good off road but not the best on road and the back seat is terrible so if any family now or planned dump it.
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- #8 of 76
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Re: 2003 Chevy Blazer recurring 4wd problem []
by johnnyd69
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Dec 09, 2006 (9:18 am)
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Replying to: unknown (Dec 09, 2006 3:49 am)
Thanks! The problem I have had three times so far is: when I clicked the button to shift into 4WD from 2WD it made a grinding noise and then went dead (i.e. it was in 4WD high and I was unable to shift back into 2WD). Each time they've replaced the the unit and once the dashboard switch (although that has gone once as well). I was just wondering if anyone's heard of these 4WD units being defective. I love the truck otherwise and have not had one problem in 4 years other than this, but since I need the 4WD, if it is I'll dump it for something else.
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- #9 of 76
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Re: 2003 Chevy Blazer recurring 4wd problem [johnnyd69]
by repairdog
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Dec 10, 2006 (2:03 am)
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Replying to: johnnyd69 (Dec 09, 2006 9:18 am)
Which part the encoder motor? Is this a 3 button dash switch? Problem depends on case type and exact area and did a GM dealer work on it?
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- #10 of 76
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Re: 2003 Chevy Blazer recurring 4wd problem [repairdog]
by johnnyd69
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Dec 10, 2006 (9:02 am)
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Replying to: repairdog (Dec 10, 2006 2:03 am)
It is a 3-button dash switch, and each time a GM dealer has worked on it; they've replaced the unit each time.
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- #11 of 76
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Re: 2003 Chevy Blazer recurring 4wd problem [johnnyd69]
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Dec 10, 2006 (12:13 pm)
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Replying to: johnnyd69 (Dec 10, 2006 9:02 am)
If they are just changing the dash switch thats why it keeps craping on you - there is a vac line to the transfer case 3 port switch that the encoder motor for 4HI directs vac to the front actuator and engages the front driveshaft. Sensors tell the TCCM (4wd computer) status and allows all to occur. 4Lo then has the encoder motor further engage the low gear. Someone isn't finishing the complete fix.
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