Last post on Nov 28, 2013 at 5:49 PM
You are in the Chevrolet Suburban & Tahoe
What is this discussion about?
Chevrolet Suburban, GMC Suburban, SUV
#926 of 1043 1996 Tahoe Starting and Running Problems (Crankshaft Position Sensor)
Aug 27, 2009 (2:29 pm)
My 1996 Tahoe was having terrible problems starting and running correctly. The initial diagnosis was the crankshaft position switch was malfunctioning. After almost $2000 dollars of replacing the sensor, engine tune-up, fuel filter and fuel pump I was still having the same problems, but not all the time. I had a local mechanic due the work and he said take it to Chevy and have them diagnose the problem, which they determined was still the crankshaft position switch was malfunctioning. Since my mechanic had done the original work I took the Tahoe back to him with the Chevy diagnosis problem. He crawled under the truck with it running and saw the sensor moving around while it was running. He took the sensor out and discovered that one of the mounting bolts screws into a brass fitting inside the plastic timing chain cover. The brass fitting was loose and just needed a screw driver inserted into it to spread it to increase the tension on the plastic cover. My mechanic put it back together and it resolved all my problems, meaning most of the $2000 dollars I had spent trying to fix a problem that ended up being caused by maybe a 25 cent brass fitting in a plastic cover. Live and Learn. By the way my 1996 Tahoe has almost 154000 miles on it with the original engine and transmission.
#927 of 1043 Re: 97 Suburban ABS Brakes [wildwilly1]
Aug 30, 2009 (9:53 am)
My 99 Gmc Suburban does exactly the same thing yours does. Have you been able to come up with a fix?
#928 of 1043 Re: 97 Suburban ABS Brakes [guya60]
Aug 30, 2009 (11:13 am)
That post is from 2005
#929 of 1043 big problems
Sep 03, 2009 (2:49 pm)
i have a 98 gmc suburban with a vortec 350 and i am haveing problems with it. when u start it up and go to drive away with it it gets to 3000 rpms and it just stumbble on it face. i had checked coil, put in a brand new distributor, had the ignition module checked at the part store and put new plugs and wires, and fuel injectorand it is still doing it
#930 of 1043 Re: big problems [jbl2001]
Sep 03, 2009 (4:31 pm)
any error codes in the computer?
check for leaking intake manifold
#931 of 1043 Re: big problems [kiawah]
Sep 05, 2009 (8:26 pm)
nope no lights and the intake manifold is not leaking i had had this truck for 3 years and i don't want toget ride of it u know what i need to check the fuel pressere
#932 of 1043 Re: big problems [jbl2001]
Sep 05, 2009 (8:35 pm)
I reread your problem symptom, and may have mis-interpreted what you were saying. Explain the 3K rpms statement. Are you saying that you are in park and starting it and rev it to 3K and it stumbles (no load condition).....or does it run okay at low rpm and low load?
Or is the situation that you are really trying to accelerate fast (at say 30-40 mph and the car isn't able to accelerate (high load situation).
If it is the later, you could have a bad fuel pump, very common.
#933 of 1043 Re: big problems [kiawah]
Sep 12, 2009 (5:03 pm)
just to let u know what was going on with my suburban it was the fuel pump
#934 of 1043 fuel pressure regulator
Sep 14, 2009 (1:13 pm)
my mechanic has diagnosed my very-hard-to-start 1999 gmc suburban problem as bad fuel pressure regulator. He has quoted 7 hours and $1100 for the job (r&r upper intake, associated gaskets, nipples, oil change, etc). Labor rates can vary, but is the amount of hours about right? i've seen posts that this job should take much much less, but I think those engines have the FPR mounted outside the engine. Been doing business with these guys for 5+ years and never did me wrong, but appreciate your impressions on this.
#935 of 1043 2002 Suburban Dome lights/ door lights not working
Sep 22, 2009 (6:58 am)
2002 Suburban Dome lights/ door lights not working. I have checked the fuse and replaced the headlight switch and the lights still do not work. I took one of the dome lights down and put 12 volts on it and all the lights worked. I suspect there is a bad relay somewhere but I can not find it. Thanks, Bob