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Prev Professional Automotive Repair Technical Discussions for April 23, 2007
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Open Help Requests for GM
Help Request Answers
1991 Chevrolet V3500 Silverado 7.4L Poor Idle Quality, Poor Fuel Economy VIN: 1GCHV33N3M
Hi guys and girls.I bought this truck last October and have just recently put it on the road 2 weeks ago.The problem is the idle speed is not constant and to high.When warm it usually stays in the desired range of 750 but as soon as you open the throttle and r...
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2001 Chevrolet Malibu 3.1L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G1ND52J61
vehicle came in with missfire. code p0304. found ignition wire terminal on coil pack for cyl #4 corroded. installed new plugs and wires. miss fire still present. swapped coil pack with known good and brand new coil packs, same results. installed vacuum tubes b... Trouble codes: P0304
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2001 Chevrolet Blazer LS 4.3L MIL Lamp on VIN: 1GNDT13W91
VEHICLE HAS BEEN TO US BACK IN 06 FOR P0155, REPLACED SENSOR, CLEARED AND OK FOR ABOUT A YEAR. CAME BACK LAST WEEK WITH SAME CODE. FOLLOWED ALLDATA TROUBLE SHOOTING AND WAS INSTRUCTED TO REPLACE SENSOR. OK FOR A WEEK, CAME BACK WITH SAME CODE. FOLLOWED ALLDATA... Trouble codes: P0155 (ho2s heater performance bank 2 sensor1)
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2002 Chevrolet Silverado 3500 6.6L No Start VIN: 1GCJK33192
i have security light on all the time.bcm shows key code ok but pcm still in fail mode.tried relearn but pcm wont go into count mode.any help would be apreciated.
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2003 Chevrolet Suburban 1500 LS 5.3L turn signals VIN: 3GNFK16ZX3
Here is an unusual one. When turning the left turn signal on, all 4 directionals flash (like the hazards are on). About 1 month ago, I replaced the multifunction switch for the same problem. All was well until last week. I find it hard to believe that 2 switch...
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2004 Chevrolet Silverado 2500 HD 6.6L speedo VIN: 1GCHK23294
can hear bearing type noise int, & then speedo jumps, & brake lite will come on, will go out on own after several miles, will set code co 055, did see voltage bobble at speed sensor, replaced sensor & could not verify any more fluctuation., but still have trou...
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1997 Geo Tracker 1.6L fuel gauge VIN: 2CNBJ1363V
where would ground wire for gauge be at? gauge works most of the time just start to give promblems jim
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1995 Oldsmobile Aurora 4.0L no communication VIN: 1G3GR62C6S
Vehicle came in with a severe bucking / chugging that would occur intermittantly but usually only while idling or light throttle. Vehicle had previously had wires, plugs, and typical other maintenance. Scanned computer and had no communication. Later scanned a...
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2002 Oldsmobile Bravada 4.2L battery draw VIN: 1GHDT13582
Help! This one is costing lots of $$$! It came in with an electrical draw of approx. 2 amps. It does not time out. We have unplugged just about everything and our results are as follows: 1)If we remove upper connector from BCM (fuse block-bcm connector) and th...
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1986 Pontiac Fiero SE 2.5L Clutch VIN: 1G2PF37R4G
Vehicle came in originally for no resistance in clutch pedal. Found slave and master cylinders leaking. Release fork contact block also damaged. Repaired release arm and replaced slave and master cylinders. everything worked well. Vehicle returns later with cl...
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1996 Pontiac Grand Am SE 3.1L Injector Pulse VIN: 1G2NE52M2T
Starts & Stalls. Theft System Light Always On Steady. Tried Key Relearn. First Time Relearned Worked, Car Started & Ran. Shut It Off, Let It Set For A Couple Of Hours, Wouldn't Start & Run. Tried Relearn Again. Didn't Work. As Far As I Know Nothing Has Been Do...
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1998 Pontiac Grand Am SE 2.4L MIL Lamp on
hello all this car came from another shop that put all the new stuff in it, it sets a po335 crank sensor code sometimes. mitchell diag. says record freeze frame then clear code let idle 5 mins. or till lite comes, it doesnt set a code again till I drive it 4-5... Trouble codes: P0335
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1996 Saturn SL1 1.9L no upshift , MIL on VIN: 1G8ZH5281T
Greetings, Need help with this Saturn SL1 . Bear with me as this is my first help request . Trans will upshift 1-2-3 and then back into 1st limp-in ,once per key cycle . Using snap on scanner can clear codes and will return when trans goes into limp in .I've...
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2003 Saturn L200 2.2L Fuel smell VIN: 1G8JU54F53
Greetings fellow Techs, Strange problem with this vehicle. I hope someone has seen it before. Vehicle towed in 1 month ago dead. Fuel pump tested bad. We replace with oe fuel pump. Every since then customer has complained of strong fuel smell coming in car th...
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Fixes & Summaries for GM
Fix/Summary Answers
1996 Chevrolet Cavalier 2.2L power steering VIN: 1G1C1248T7
good afternoon again This car is fixed.I did what David [...] suggested and after turning the wheel to lock position hold there for the count of ten and repeat to other lock position.I did this for ten times and that cured the problem.Car steers fine now.I...
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2000 Chevrolet Silverado 1500 5.3L Misfire, MIL Lamp on VIN: 1GCEK19T7Y
well I replaced the fuel pump because it didn't hold pressure. And added some seafoam in the motor oil thought it would help if it has sticky valves. had owner drive for weekend, he called today and said it is running good. thank you for the replies Trouble codes: P0135, P0300, P0446, P0463.
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2000 Chevrolet Silverado 2500 6.0L 4-3, 3-4 shift VIN: 1GCGK24U4Y
This vehicle does have a 4L80E trans. I checked and found that the line pressure was high at all times. Apparently there is an updated valve body for this trans so we elected to replace the valve body. We pulled the pan and found lots of metal in pan and filte...
3
2003 Chevrolet Silverado 1500 5.3L speedometer VIN: 2GCEK19T73
Thanks to all that responded. I tried all of your suggestions, of which none worked. Speedo just went bad after battery disconnect. Sent customer to dealer.
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2000 GMC Sierra 1500 SL 4.8L MIL Lamp on VIN: 2GTEC19V3Y
Thank you to all that replied it was a simple blown fuse to cigarette lighter. that got the ecm to commuate. He did have 2 codes stored which were evap code 440. The driver says he fuels with the truck running all the time and we just broke the 40' degree mark...
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2004 GMC Sierra 1500 SLE 5.3L tcc VIN: 2GTEK19T94
Thanks for all the replies, I put a pressure guage on main line pressure and felt like I saw slight fluctuation ever so slight increase in pressure at the same time converter slip would drop to 0 , Im not really sure ,but I wanted to be.anyway my plan was to r...
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1988 Oldsmobile Cutlass Calais 2.3L Cuts out VIN: 1G5DGH76J8
i have got this car running better,goin to put in new cpmputer tommorow,but diddent want to leave two open request,thanks everyone who helped. Trouble codes: 23 (air temp sensor open), 26 (qdm error), 43 (est failure), 53 (over voltage).
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2001 Oldsmobile Intrigue GL 3.5L MIL Lamp on VIN: 1G3WS52H91
Thanks to Bill from Wisconson in verifying what we thought may have been the cause with trying to confirm the repair had been made. Snap On modis has test to comand the soleniod on and off. This test does not work. We tested once again while cold, air pump r... Trouble codes: P0412.
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2003 Oldsmobile Alero GL 2.2L security system VIN: 1G3NL52F03
Thanks guys for your insight. As I isolated each component from the circuit my lights on the dash remained on. I went to the fuse boxs, there are three, and started to pull fuses to see if I could determine where my feed back power was comming from. I found wh...
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1994 Pontiac Grand Prix SE 3.1L MIL Lamp on
the replies i recieved were very helpful i didnot know my year vehicle could not be flashed for codes i thought all obd i vehicles could be jumpered and flash the code so this info was very important. i was able to fix vehicle without a scan tool this is an ex...
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1994 Saturn SL 1.9L Excessive Emissions, Poor Idle Quality, Hesitation, Stall VIN: 287766BG38
thank you to all technicians. it is very helpful to receive advice from all of you. i have fixed the problems. i checked the coolant temp sensor, and it cracked. i replaced a new one and everything work good. thank again, all automotive
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