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Prev Professional Automotive Repair Technical Discussions for November 7, 2007
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Open Help Requests for GM
Help Request Answers
2000 Buick Regal GS 3.8L Cuts out, Stall, MIL Lamp on VIN: 2G4WF5515Y
Car cuts out or dies intermittenly cough, spits, sputter, black smoke have replaced the mass air flow sensor and the throttle position sensore due to the codes it is setting but this has not help the problem and if raise the rpms to 2000 the car will die out c...
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1997 Cadillac Catera 3.0L Timing Tensioners? VIN: W06VR52R1V
A good friend of mine has a 97 Cad. Catera that was running great and she ran into a store came out 10 minutes later and car has a horrendous noise coming from right front valve cover or timing belt area...I only had it running a few seconds and it was dark ou...
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1982 Chevrolet Corvette 5.7L No Start VIN: 1G1AY8782C
we got this corvette today for a no start.the car does have spark but has no injector pulse.we have power going to the injectors but no signal to fire.further checking also lead us to notice we do not have a check engine light,following a flow chart we back pr...
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1991 Chevrolet V1500 Suburban Scottsdale 5.7L Misfire VIN: 1GNEV16K1M
Hello techs, any ideas?? Feels just like secondary ignition missfire, all components have been rechecked. When missfire occurs with timing light hooked up, timing seems to momentarily advance,in sync with miss. Have had at two other shops, but they cant seem t...
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1993 Chevrolet K1500 Cheyenne 5.0L Poor Fuel Economy, Lack of Power VIN: 2GCEK19H6P
Customer complaint is that it has no power and poor fuel mileage. The main problem that we have is that the knock retard PID shows 20 degrees even with the engine not running. With engine running at all RPMs it reads 26 degrees. We can't get anymore than 21 de...
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1995 Chevrolet Caprice Classic 5.7L Oil leak, front cover area VIN: 1G1GL52P45
Vehicle has had small leak at front of engine for some time. Got worse in last week, removed water pump and dist to replace seals. Discovered water pump bearings were out, replaced pump and seals. Still leaks at pump drive seal, any special tricks or tools to ...
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1997 Chevrolet K1500 Cheyenne 5.7L abs VIN: 2GCEK19R4V
When coming to a stop the ABS kicks in. Has new pads, rotors and sensors with clean mounting surface. ABS ring looks good with no damage. Tires good with proper air pres.
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2001 Chevrolet Blazer LS 4.3L fuel guage fluctuates VIN: 1GNDT13W81
thanks for any help we have a 2001 chevy blazer that the gas guage fluctuates excessively from half tank to empty or quarter of tank to empty and low fuel light will come on after you stop and put vehicle in park wont do this stopping at light and leaving in g...
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2004 Chevrolet Suburban 1500 Z71 5.3L No Start, MIL Lamp on VIN: 1GNFK16ZX4
this vehicle had a no start problem in march. we tracked it to a fuel pump and replaced the same. now it has a intermittant no start and the code is constant. i can not find if the code will cause the no start or not. i would not think but not sure. i can not ... Trouble codes: P179
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2005 Chevrolet Avalanche 1500 LT 5.3L Rear lift gate VIN: 3GNEK12Z65
Help G.M. techs or anyone else replacing or trying to replace rear lift gate (tail gate) handle.. It looks to me all these plastic peices are glued together..Or mabee this top piese comes off i dont know. One of you guy,s has had to replace one of these handle...
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1996 Saturn SL2 1.9L master cylinder VIN: 1G8ZK5274T
well, after fixing cars profesionaly for ten years, i did not think a simple brake system could stump me, but i have spent too much time on this, so i need some help! i had this saturn come in with what felt like rear shoes out of adjustment. when i pulled the...
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Fixes & Summaries for GM
Fix/Summary Answers
2000 Chevrolet Impala 3.4L Cuts out VIN: 2G1WF52E1Y
Thanks for the many ideas and replies. Customer has picked the car up to see if he can live with it as he has too many kids to haul around for now anyhow. This thing like I said is more like a rev limiter than a fuel supply problem. Fuel pressure pops right up... Trouble codes: P0300, P0301.
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2001 Chevrolet Suburban 1500 5.3L long crank VIN: 3GNFK16T91
Group, Pressure held for a few hours, truck starts great, pressures good for now, and most importantly, customer is happy. I of course informed them that some day it will need a pump, but not today. FPR did not leak externally, but let the rail bleed down an... Trouble codes: U1301.
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2001 Chevrolet Express 3500 5.7L Misfire, MIL Lamp on VIN: 1GBJG31R51
The problem was fix after replacing the engine harness. i did not have time to open the loom and find the short, but shure enough that took care of the problem. Trouble codes: P0300.
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2002 Chevrolet Trailblazer LS 4.2L Hesitation, Cuts out, Tip In Stumble VIN: 1GNDS13S22
Thank you to all who have responded. David from New York put us on the right track. He mention to check the cam sensor with a lab scope for correct output. With out his response I would have never had thought to look at the cam sensor because it had no trou...
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2003 Chevrolet Tahoe LS 5.3L service 4wd light VIN: 1GNEK13T63
THANKS FOR ALL REPLIES FOUND OUT AFTER THAT THIS CONCERN HAS HAPPENED ONLY TWICE IN THE PAST YEAR, CLEANED GROUNDS AS SUGGESTED LOOKED FOR HARNESS DAMAGE OR WATER INTRUSION FROM WINDSHIED AS WELL AS ENCODER HARNESS ADVISED CUSTOMER CLEARED CODES WILL WAIT FOR ...
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2004 Chevrolet Astro 4.3L Differential VIN: 1GNEL19X74
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2004 Chevrolet Impala LS 3.8L ps pump VIN: 2G1WH55K74
I INSTALLED ANOTHER POWER STEERING PUMP AND LET THE CUSTOMER USE IT FOR SEVERAL WEEKS AND FINALLY ALL TJHE AIR PURGED OUT AND ALL IS WELL.
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2005 Chevrolet Impala 3.8L low fuel message VIN: 2G1WF55K45
After following wiring diagrams and rechecking all the connections, everything thing looked good. had no broken wires. The problem was the connector at the transmission and the power plug on the left upper side are the exact same plug. the two plugs were in...
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1996 Geo Metro 1.0L Rear wheel bearings VIN: 2C1MR2264T
I just want to say thanks for all your help, this is the first posting for help ive done and the resonses were great. Turns out when I had one of my technicians replace the wheel bearings originaly either there was not a bearing spacer or he missed it. I have...
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2001 GMC Yukon XL 1500 SLT 5.3L Suspension VIN: 3GKFK16T61
We could not fix this one as we couldn't scan the system for fault codes. I have been told a dealer only tool is needed. Everything mechanical was hooked up and there weren't any obvious faults we could see. Thanks for the replies.
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1996 Oldsmobile Cutlass Ciera 3.1L No Start VIN: 1G3AJ55M7T
“It's Fixed” First of all let me say Thank You IATN Techs for all your help. Everyone confirmed what I already knew; however I just didn't look far enough. I checked the crank sensor at the sensor it's self and it was new. I looked at the wire and you can ...
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1997 Oldsmobile Aurora 4.0L Poor Idle Quality, Misfire VIN: 1G3GR62C6V
Dale from California hit the nail on the head. The intake cam on the front or left bank was off 1 tooth. It was one of those vehicles that wakes you up in the middle of the night and gets you thinking. The engine vacuum was at about 16 inches. I read another m... Trouble codes: P0300 (random misfire detected).
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1995 Pontiac Grand Prix GTP 3.4L timing belt or accessory belt VIN: 1G2WJ12X9S
I checked the timing belt on this vehicle because I couldn't find anything wrong with the other pulleys.thought the acccessory belt was putting extra tension on the timing belt. as Istated the noise started going away when i sprayed the belt with dressing.I'm ...
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1999 Saturn SC1 1.9L Misfire, MIL Lamp on VIN: 1G82P1286X
Thanks for all the help guys.. The culprit was the ECM -- The #1 Fuel Injector driver must have gone bad-- installed new ECM-- good as new... Thanks Again Trouble codes: P0301.
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2000 Saturn LS1 2.2L odometer and sppedometer VIN: 1G8JU52F3Y
OK ITS FIXED AND DOWN THE ROAD THANKS IATN ESPECIALLY ERNIE FOR ALL UR HELP I INSTALLED NEW BCM AND RESET SECURITY, WAS A LITTLE CONCERNED CAUSE ODOMETER WENT TO ALL ZEROS AND WAS WORRIED ABOUT DRIVING IT TO DEALER AND REGISTERING MILES BUT WHEN THEY REFLASHE...
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2000 Saturn LS2 3.0L No Start, Cuts out, Stall, MIL Lamp on VIN: 1G8JW52R5Y
Well, chalk another one up to the Tech Guru's at IATN! The Automotive ghost finally gave up, and allowed me to see what was really going on, when it gave out. It finally got to a point where the CRANK sensor finally thew a code...P0335. And, after reading what... Trouble codes: P0727 (Engine Speed Imput Circuit - no signal), P1780 (Park/Neutral Position PNP Switch Circuit).
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