Last post on Jul 16, 2013 at 4:58 PM
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Chevrolet Blazer, GMC Jimmy, SUV
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#2106 of 3676 1997 GMC Jimmy - Multiple failures with ABS
Apr 04, 2006 (4:18 am)
For the third time in 6 years, the ABS in my 1997 GMC Jimmy has failed! Past symptoms: The system activates itself & the car starts braking while I'm accelerating. The speedometer goes to zero & the transmission goes into neutral. Past repairs: ABS Chip & Sensors (2003) & Ignition Switch (2005). Today, it will have be towed to the dealership because I can't get it out of park unless I switch to 4WD. The problem started at 45,000 miles & has 82,000 miles on it right now. Has anyone else had this many problems in such a short time? Any solutions or am I driving a ?
#2107 of 3676 Re: 2000 Jimmy: Jumping Gas Gage, Won't Start, Bad power window [repairdog]
Apr 04, 2006 (5:54 am)
Thanks for the advice.
The pump does run. Fuel pressure is about 51 psi. Probably just low enough to give intermitent start. I want to say it starts better in warmer weather. Fuel filter was pretty clogged, but we replaced it and still have the problem. Mechanic did not think the pump relay was a problem because the vehicle will start at times. Looks like replacing the pump is the best direction at this point.
Will a new fuel pump fix the jumping gas gage?
On the Window - I need to check through your list, but yeah the pin / bushings are worn badly. Good chance that is the problem.
Thanks for your help!
#2108 of 3676 Re: 1997 GMC Jimmy - Multiple failures with ABS [kimm1]
Apr 04, 2006 (5:55 am)
Blazers do have their own personality!
There are ABS sensors in the front hubs that have had a few problems and there is a bulletin out on "ABS activation at low speed (Clean wheel speed sensor mounting surface) for 95-03 Blazers #02-05-25-006 that I looked at - maybe your problem. Also there are vehicle speed sensors (VSS)on the transfer case for the rear wheels that can also go bad. Under vehicle rusting surfaces and wear are catching up with you, sorry - its age as well as mileage on these.
#2109 of 3676 Re: 2000 Jimmy: Jumping Gas Gage, Won't Start, Bad power window [il203]
Apr 04, 2006 (5:58 am)
Yes, the sender is part of the new pump assembly from GM so you get a 2 for 1 fix!
As for the pins/bushings, another known defect and many posts online on how to replace -parts are cheap but GM charges over $100 per door to do.
#2110 of 3676 real bad engine idle (and rough overall performance) on 93 S15 Jimmy
Apr 04, 2006 (6:34 am)
I have a 93 s15 jimmy (4.3 w/ CPI)that has had a problem with rough idle and now has gotten much worse. Barely stays running (stalls alot) and I want to know if the TPS (throttle position sensor) or MAP sensor (Manifold vaccumme sensor)is bad causing the computer to dump in more fuel than required. (check engine lite on as well ... no surprise) I got this for my kid and did a complete tune up on it with plugs/cap/rotor and intake manifold gaskets and it did not run too bad but it always had a rough idle. (I checked the compression and all cylinders are at 130)
He stomped down on it yesterday and did some hard acceleration and when he backed off then is when the real problems started .... real bad idle and barely stays running. I have a 94 S15 and it has been a good truck. I swapped out the computer and put it in the kids truck and ... no difference. If you pull the vaccumme hose off the power brakes the truck ups in speed (like there is too much fuel and when it gets more air it increases in speed .... burning the extra fuel). Catalytic converter gets real hot too (too much fuel going into it??) I read up on it some and decided that it could be the TPS or MAP sensors and possibly a bad O2 .. (but I don't believe it is the O2 because it runs soooo bad) any way I can determine if the sensors are bad? Oh yea ... has a mass airflow sensor as well .. but I do not think it is the problem either. Can a clogged EGR cause this ...don't think so
Any suggestions ... please
Apr 04, 2006 (8:30 am)
I know I'm being lazy, but can you tell me where the fuel filter is on my '01 4dr/4wd Blazer. Is it going to be under pressure?
#2112 of 3676 Re: real bad engine idle (and rough overall performance) on 93 S15 Jimmy [bchi1]
Apr 04, 2006 (8:30 am)
Did you replace the fuel pressure regulator and nut kit (lines) under the upper intake. Thats a problem area and if you pull the upper cover you should see washed areas if they are the problem. Lots of info and pics when you do a full search online. Some auto stores also list the ways to test each sensor and a Chiltons will for $17. If you have codes read them out and they should be of some help. If you get stuck I'll list the sensor tests.
#2113 of 3676 Re: Fuel Filter [blaze4x4]
Apr 04, 2006 (8:37 am)
Underside of Blazer (almost beneath the drivers seat area) inside of the frame rail in a plastic bracket. Yes under pressure but if you just crack the input line a tad it shouln't be much coming out but it always drips on you no matter what. One end requires 2 wrenches and the other is a pinch the tabs together to release. You will usually have to take the bracket off (think 13mm) to get the filter out of it. Wear safety glasses!
#2114 of 3676 Re: 99 blazer fuel problems [zaay]
Apr 04, 2006 (9:30 am)
well, you're not alone. My 99 Blazer's fuel guage went out last year. I've been using the trip computer's estimate of fuel used- which is fairly accurate.
But- now I'm ready to sell the car, so I may need to fix it. Mechanic says it will be close to $1K for the job. OUCH!- but on the flip side, my Blazer has been trouble free for nearly 7 years.
#2115 of 3676 Re: Noise in Front End [hoochjk15]
Apr 04, 2006 (11:27 am)
My 2002 has recently started squeaking in the front end also.
I just had new tires put on it and they are not the same as the rear.
I have 235 75 15 on front and 235 70 15 on rear. I am buying 2 more new ones to match the front size. I was told that the 75 is for 4wd vehicles and the 70 is for 2wd.. Mine is a 2wd.. I wonder if I get the other 2 to match, will the squeak stop?
I mean it is sounds like the other poster mentioned..bed springs.