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Prev Professional Automotive Repair Technical Discussions for May 26, 2009
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Open Help Requests for GM
Help Request Answers
1992 Buick Regal Custom 3.8L No Start VIN: 2G4WB54LXN
hi hate to bother everyone out there but this thing has me just puzzled. ok first veh was towed in no start. fuel psi good. i have no spark at all. pulse 2 flashes at time then fades. no codes. no rpm signal, replaced crank and cam sensors with new, then with ...
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2000 Buick LeSabre Custom 3.8L Radio VIN: 1G4HR54KX5
I have been working on this 2000 Buick off and on for a week now and I'm at my wits end. The customer brought it to me saying that the radio wouldn't work first thing in the morning, but after driving a ways it would. They thought it had something to do with b...
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2003 Buick Century Custom 3.1L Misfire, MIL Lamp on VIN: 2G4WS52J13
Car came in running fine for the first 10 minutes cold after that repeated miss on acceleration. Replaced front crank sensor "A" same problem. Replaced crank sensor "B". Same problem but problem much better. Only misses every once in a while and only once or t... Trouble codes: P0336 (Crank Sensor)
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1994 Cadillac Eldorado Touring 4.6L Poor Idle Quality, Surge, Misfire VIN: 1G6ET1299R
Customer brought this car in and asked for a tune-up. We had recommended a fuel pressure regulator (under the plenum)on this car a while back. It also had a code 31 in history. We replaced the fuel pressure regulator, MAP sensor, Spark Plugs and Wires. The car... Trouble codes: 31 (MAP Sensor Open/Short)
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1999 Cadillac DeVille 4.6L steering position sensor VIN: 1G6KD54Y4X
Here is a wierd one. went to install a new steering wheel position sensor and when i go to put it on the shaft it will not go straight into the bucket it sits in without pulling the pin and moving it. looks about 25 degrees off. switching from high to low is e...
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1999 Chevrolet Tahoe LS 5.7L Misfire, MIL Lamp on VIN: 1GNEK13R1X
hello friends, having trouble with misfire on cylinder #6. only happens on a long grade uphill. if you accelerate hard from a stop or accelerate hard on freeway at high speed unable to duplicate fault. but a long uphill climb cylinder starts to misfire, can se... Trouble codes: P0306
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2000 Chevrolet Express 3500 6.5L Stall VIN: 1GCHG39F8Y
Van will quit after driving for a while, customer says he lets the van sit for 5-10 mins and it will start back up and away he goes for a few more miles then it will quit again. There is no codes, and I am not familiar at all with these 6.5L engines. Any help ...
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2003 Chevrolet Venture LS 3.4L front seats VIN: 1GNDX03E03
Hi Techs Have customer that just recently bought this vehicle and are very unhappy with the front bucket style seats - The seats have curtain air bags. They would like the Chev uplander style or similar seats put in. QUESTION What adverse effect would there be...
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2005 Chevrolet Malibu LS 3.5L Poor Idle Quality VIN: 1G1ZT52865
Vehicle runs great at cruise. Decent at no load idle, but a little rough at curb idle in drive after it warms up. long term fuel trim is -10 bank 1 and -13 bank 2.o2 sensors test good. fuel pressure is 60 psi. My question is thisshould i have a strong vacuum c...
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2003 GMC Sierra 3500 SLE 6.6L No Start, hot no start VIN: 1GTJC33153
the problem has been gradually getting worse cold the truck starts fine it will run all day no problems but if you shut it off even 4 5 minuts it will not restart untill it gets cold if i give it a quick shot of eaither it will fire right back up parts cost to... Trouble codes: P1093
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2004 GMC Yukon XL 1500 SLE 5.3L Fuel Filling VIN: 1GNEK13R64
When filling with fuel it backs up. Cannot fill quickly. To dispense fuel you have to trickle the fuel in very slowly. Could it be a faulty vent solenoid? Thanks.. Arne
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2005 Saturn Ion-2 2.2L Hesitation, MIL Lamp on, LOSS OF POWER VIN: 1G8AJ54F15
customer brought vehicle into our shop for ses and reduced engine power light,loss of power and a chime when this occurs.coded computer and the above codes where retrieved. she stated that this only happens on left turns,however we were able to duplicate it 1 ... Trouble codes: P0651, P2135 (app sig 1), P2138 (app sig 2)
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Fixes & Summaries for GM
Fix/Summary Answers
1999 Cadillac DeVille 4.6L cluster VIN: 1G6KD54Y5X
THANKS TO ALL THAT REPLIED IT WAS A BAD GROUND IN DRIVERS KICK PANEL. THE LUG BROKE RIGHT FROM THE EYELET. REPLACE NEW END AND PROBLEM SOLVED. THANKS AGAIN FOR ALL THE HELP TOM DBASS.
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1986 Chevrolet Corvette 5.7L Horn VIN: 1G1YY0782G
Thank you to everyone who replied. The "convenience center" is located behind a panel in the center of the dash as many people noted. We found a fuse in this "convenience center" identified as "security" that had failed. The horn relay is also located in this ...
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1999 Chevrolet Astro 4.3L Misfire, MIL Lamp on VIN: 1GNDM19W8X
Hey Guy's, I am sorry that it has taken me this [...] to respond to the fix of this vehicle, but I really wanted the customer to drive this van around for a while to make sure that the check engine light would stay off. To Clarify things I did do compression te... Trouble codes: P0300 (Random Misfire).
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2002 Chevrolet Silverado 1500 4.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GCEC14W22
As per some suggestions, I did replace the cap and rotor with the same results. It turned out to be that famous poppet style injection unit to be the culprit. I pulled off the complete intake to check the gasket, only to find that # 4 and 6 were not adjacent t... Trouble codes: P0300.
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2002 Chevrolet Impala 3.4L starter VIN: 2G1WF52E92
I replaced Ign. switch .The car been good for 2 week, Thank for the help.
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2001 GMC Yukon XL 1500 SLT 5.3L Poor Idle Quality, Hesitation, Cuts out, Poor Fuel Economy, MIL Lamp on, HARD STARTING VIN: 1GKFK16T11
replaced fuel pump and fuel pressure regulator. Runs better, but evap DTC is back. Customer will bring in at a later time to address that issue. Thanks to all that responded for you help! Trouble codes: P0453 (testing and results).
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2002 GMC Envoy SLE 4.2L Upshifts VIN: 1GKDT13SX2
Hello all, IATN does it again!!! Russell from Washington hit the nail right on the head & also had alot of good advice & accurate information, Thanks Russell. We removed the valve body & you could see a piece of the broken accumulator piston stuck in the 1-2 s...
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2002 GMC Savana 1500 5.7L Mechanical VIN: 1GDHG31R42
A bad cam sensor...replaced with a different sensor, solved the problem
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2006 GMC Savana 1500 5.3L MIL Lamp on VIN: 1GKFH15T66
WE FOUND THAT THE LONG TERM FUEL TRIM WAS ONLY HIGH AT IDLE AND IN PARK (25%). CHANGED PVC VALVE (VALVE COVER) BECAUSE AT IDLE IN PARK, WE FOUND PULLING OFF VACCUUM HOSE AT THE PVC VALVE AND PLUGGING IT, LONG TERM FUEL TRIM WOULD DROP TO 10%. CHANGING THE PVC ... Trouble codes: P0171, P0174.
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2005 Hummer H2 6.0L MIL Lamp on VIN: 5GRGN23U75
this is a limo only gets drove alot right now , we did a bg clean on the fuel system has improved , still not 100% but lot better , after wedding and promo season i will get it back for awhile , but it lot better, Trouble codes: P0301.
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1989 Oldsmobile Delta 88 Royale Brougham 3.8L Hesitation VIN: 1G3HY54C5K
This one is fixed. The car came in for a lack of power which the first fuel pump fixed. But on the road test we found that during a hard acceleration going into passing gear it would stumble just like a mis-fire so we checked every thing again, sensors, igniti...
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2000 Oldsmobile Alero GLS 3.4L Surge, Cuts out, Misfire VIN: 1G3NF52E9Y
OK, it's fixed! I checked the egr valve again, but this style would be impossible to install backwards (upside down with a lot of effort maybe). I removed and cleaned the MAF, and nothing changed. The very first reply I got was to check the crank sensor again....
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