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Professional Automotive Repair Technical Discussions for February 23, 2009 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1995 Buick LeSabre Custom 3.8L No Start VIN: 1G4HP52195 hello techs,this one gat me.this car came in with a loud backfiring problem.the car would start and run for a minite or so and then it would start missing and die with a loud backfire.I try to have the code read but my scanner wont link to the pcm.found out th... |
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| 1995 Buick LeSabre Custom 3.8L MIL Lamp on VIN: 1G4HP52L5S Veh came in with the customer complaint of Mil light on. At time of repair the light was not iluminated but a code P1630 was stored. It is the only code. I checked the charging system per the All Data test under this Veh. All was fine. I checked the battery te... Trouble codes: P1630 (system voltage high/low) |
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| 2002 Buick Rendezvous CX 3.4L check engine light VIN: 3G5DB03E72 after inspection and minor unrelated repairs vehicle was sold from our dealership and came back next day with check engine light on. code p0744 tcc stuck off or open code in memory. testdrove and vehicle had no shifting issues whatsoever. fluid looked/smelled ... |
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| 2003 Buick LeSabre Custom 3.8L Cuts out, Stall VIN: 1G4HP52K23 hello thanks in advace. Need help with this buick. car towed in .car starts fine and runs fine with no problem. soon place trans in gear engine stalls out. it will stay running if bring the RPM up to 1500 in gear and it does same thing in reverse. it almost li... Trouble codes: P1811, U1040 |
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| 2004 Cadillac Escalade EXT 6.0L Hesitation VIN: 3GYEK62N84 Hello,I was wondering if I could get a little heads up on this repair.I am a european specialist dabbling in the world of GM,and I think I have a real winner here. This is a 2004 Escalade EXT that has a severe hesitation when cold on left turns.It feels like ... |
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| 1984 Chevrolet Corvette 5.7L Excessive Emissions VIN: 1G1AY078XE car run rich (off idle) but run ok at idle. Trouble codes: 13 (o2 sensor circuit), 45 (air fuel mixture rich) |
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| 1996 Chevrolet Express 1500 5.0L interior lamps VIN: 1GBFG15M3T I have a full size Chev G1500 Express van that the domelamps stay on too long. This is a "Regency" conversion van. The problem is that the dome lamps operate normally with the doors opening and closing (shut off after 30-60 secs.) When cycling the ignition key... |
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| 1997 Chevrolet K3500 6.5L Excessive Emissions, No Start, Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on hi this one ton with a bed on back was surging off idle and then we installed a {new} pump. now still sets po216 and wont start unless you spray a tiny bit of starting fluid then will start after long cranking. was afraid to spray too much. also has misfire co... Trouble codes: P0216 |
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| 1999 Chevrolet K1500 Suburban 5.7L Poor Idle Quality, Hesitation, Surge, Cuts out, MIL Lamp on VIN: 1GKFK16R1X Thanks in advance for taking the time to read and respond to this one. This Surburban is giving me a major headache! Customer tuned it up himself and replaced the listed parts. Came to me running rough, checked cap and rotor and found rotor loose, fixed that ... Trouble codes: P0171, P0340 |
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| 2000 Chevrolet Suburban 1500 LT 5.3L Cooling Systems VIN: 3GNFK16T3Y Ok guys, I checked for other posts on this topic and correct me if I'm wrong but these 5.3 liter engines DO NOT have coolant passages in the intake manifolds. Thus, there is no physical way to loose coolant there!??? Well, what we have is a 5.3 that has a myst... |
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| 2002 Chevrolet Silverado 2500 6.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GCHK29U82 The engine runs very rough at idle showing misfires mainly on cylinders 1,3,4,8. After 2000 rpm it smooths out and runs ok. The fuel pressure is ok and the egr is staying closed. It acts like a vacuum leak but we haven't been able to find one. It seems to have... Trouble codes: P0300 (Random Misfire), P0106 (Map Sensor Low) |
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| 2005 Chevrolet Silverado 1500 LS 5.3L different motor VIN: 2GCEC13T15 This customer has brought us a used motor that has a different vin fom the one in the truck . The old motor is an iron block vin T , the new one he brought us (32000 miles)is an aluminum block vin G , the numbers off the block are [...] castin on the rear ,... |
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| 1994 GMC G1500 Vandura 4.3L 1-2 shift sol VIN: 1GTDG15ZXR Good afternoon everybody. Well I did something Saturday that I usually do not do, check a trans shifting issue. Now im stuck in the forest and cant see the trees. This vandura will set a code 82(1-2 shift solenoid problem) when started. It also has set a code ... |
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| 1997 GMC C1500 Sierra SL 5.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 2GTEC19R8V The truck continues to get P0300 Multiple Random mis-fire code and shows mis-fires on cylinders 1, 3, & 5. Fuel pump has been replaced along with rotor, distributor, plugs, spark plug wires, etc. The intake gaskets were changed on the truck over 5 years ago. T... Trouble codes: P0300 (p0303-), P0303 (p0150-), P0150 |
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| 2004 GMC Yukon Denali 6.0L oil pressure VIN: 1GKEK63U74 customer is complaining of low oil pressure warning bell going off at hot idle in gear at stop light. oil pressure is low compared to other types of engines but is within gm specs for this engine. customer would be satisified if warning bell did not go off. en... |
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| 2003 Hummer H2 6.0L rear washer VIN: 5GRGN23U03 kind of wierd the truck came in and the owner was complaining about a noise when he was cranking the truck up. it is the rear wiper coming on when you crank the car up and it will stay on until you press the button for the rear wipers. i unplugged the switch a... |
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| 1995 Oldsmobile 88 Royale 3.8L Mechanical VIN: 1G3HN52K6S i have had this car in the shop a few times. it comes in with low brake pedal and spongy. each time we will bleed the brakes and everything is fine. this will last for a month or so and we have to do the same thing. there are no leaks and the fluid level does ... |
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| 2002 Saturn Vue 3.0L MIL Lamp on VIN: 5GZCZ63B62 this saturn just came into our used car lot. the mil is on giving codes 0171, and 0174. i know this is usually a vacum leak or mafs . drivability seems to be good except for and ocassional low speed surge and irratic idle.. i don't have access to a smoke machi... Trouble codes: 0171 (lean bank 1), 0174 (lean bank 2) |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1997 Buick LeSabre Custom 3.8L Misfire, MIL Lamp on VIN: 1G4HP52K6V well i took this vehicle apart and checked valvetrain. there was no problem found. So we sent it to the dealer, they have had it for a week already. if they fix it i will post a fix. i replaced everything that can be unbolted. thanx for all the good suggestion... Trouble codes: P0336, P0300. |
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| 2003 Buick Rendezvous CX 3.4L Noise VIN: 3G5DB03E83 First of all, sorry for the confusing post with the third party message. I copied a previous e-mail message that described the problem, and did not edit or re-write it like I should have. Thanks for the replies, one suggested the GM TSB for this issue. We ... |
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| 1998 Cadillac DeVille 4.6L cooling VIN: 1G6KD54Y3W Some members has stated that this engine runs hotter than normal. After a couple of weeks, it will get up to and not over 225. Out on the road, of course it runs cooler. So this is what I'm going with, this type engine runs hotter than normal. |
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| 2001 Cadillac Seville SLS 4.6L engine noise VIN: IG6KS54Y61 Sorry I forgot about post Noise was coming from air pump check valve, customer denied repair. Thanks for info. |
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| 1991 Chevrolet V3500 Silverado 6.2L transmission VIN: 1GCHV33N3M Hi everyone.Well the beast is fixed.Set up the tps as per the bulletin sent to me by Gene and it never shifted this good.It was out of adjustment since day one.Thanks so much to all who assisted in the request.Now I can hand in the keys for the AVEO and get ba... |
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| 1993 Chevrolet C2500 Suburban Silverado 7.4L No Start, Poor Idle Quality, Stall VIN: 1GNGC26N2P thank you all who spent time and energy, i recieved e-mails all weekend. the fix was the ecm. the no data was no communication with the scanner. all power imputs were good. the vehicle started to run at one point but the data was all over the board. then if i ... |
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| 1999 Chevrolet C1500 Suburban 5.7L No Start, Stall VIN: 3GNEC16R7X after it died on me i found that one pin on the pump relay was not making good contact. |
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| 2001 Chevrolet Impala 3.4L No Start VIN: 2G1WF55E71 The fix was a new fuel pump assembly. The car was also out of gas. This is a case of not believing the customer. He tood me he just put 25.00 gas on tuesday and the car broke down on thursday and the gas gauge does not work. Had only drove maybe 50 miles. ... Trouble codes: P1189. |
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| 2001 Chevrolet Impala 3.8L Unknown VIN: 2G1WF55K61 WHEN I WENT TO START CHECKING THE CAR I NOTICED THAT NONE OF THE LIGHTS WOULD WORK IN THE INTERIOR OR EXTERIOR. I UNPLUGGED THE BCM AND PLUGGED IT BACK IN AND EVERYTHING WENT BACK TO NORMAL. I OREDERED ONE AND THEN HAD TO GO GET IT PROGRAMED AT GM, BECAUSE I... |
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| 2001 Chevrolet Blazer LS 4.3L Module VIN: 1GNCT18W71 A big thank you to those that recomended ABSfixer. I sent the module out to them and had it back in one week. Installed the module and problem was solved. |
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| 2001 Chevrolet Impala 3.4L High Idle VIN: 1G1WF52EX1 There was a problem with the wiring,there was corrosion in the harness near the IAC, Repaired the wiring & so far the vechicle has been OK Thanks to all who replied |
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| 2002 Chevrolet Silverado 2500 HD 6.6L Mechanical VIN: 1GCHK29192 Thanks for all your helps. I just went ahead and adjusted the valves . Most were a liitle loose, but not to bad. Doug |
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| 2002 Chevrolet Trailblazer LS 4.2L Encoder Motor VIN: 1GNDT13S22 Thanks to everyone who offered help. What I finally ended up doing was to remove the motor from the encoder. Have the gear assy. pointed down and lift the motor away from the assy. straight up in order for the 4 wires inside to unplug. Be gentle, you will then... |
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| 2003 GMC Sierra 1500 SLE 5.3L 1-2 shift VIN: 2GTEK19T63 Thanks to all who responded. For best customer satisfaction we have referred this vehicle on to a shop who does more internal transmission work. I will try to update my post once I get word back what was happening for sure. |
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| 1995 Oldsmobile Aurora 4.0L No Start, Misfire VIN: 1G3GR62CXS Thanks for all the help and ideas. The car still has a slight misfire, but starts decent and runs decent down the road. I told the customer that it probably should have differant injectors put in, but it runs right now. The problem was a couple of things first... |
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| 1998 Oldsmobile Cutlass 3.1L Oil Pressure VIN: 1G3NB52M4W I would like to thank all that gave me their advice to diagnose this problem so quickly. The problem was that the camshaft had broken and would not drive the oil pump. The customer declined the repair and donated the car to the local technical school. The inf... |
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| 2004 Oldsmobile Alero GL 2.2L water pump VIN: 1G3NL52FX4 TO ALL REPLIES: EVERYONE INDICATED TIMING CHAIN WAS CAUSE OF NOISE AND EVERYONE WAS CORRECT. HAD TECH RE-TRACE INSTALLATION AND BACK TIMING CHAIN TENSIONER DOWN JUST A-BIT CAR IS NOW QUIET AGAIN. IATN IS A GREAT RESOURSE WITH AWESOME PEOPLE TIED INTO NETWORK... |
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| 1998 Pontiac Grand Am SE 2.4L Cuts out, Misfire VIN: 1G2NE52T2W This one is finished. Shawnone and Justin got it correct. The TPS is what was causing the surge at 2000 RPM. A code finally showed up on the car before I could actually test what anyone had suggested. Other suggestions from other members included reflash, ... |
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| 2001 Pontiac Montana 3.4L window defrost VIN: 1GMDX03E11 Thank you to all who responded. Many replies for leaking heater core but Mark from Nebraska got this one. The rec door was broken. The actuator was able to move the door only a quarter of the way open and was able to close it. The door broke right at the ac... |
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| 2003 Pontiac Vibe 1.8L headlights VIN: 5Y2SL62873 Thanks to all that replied, I posted request then decided to look at this problem from toyota side (drl relay/controller AISIN part) and found numerous postings regarding switches and relays- already e-mailed but thanks Scott- this vehicle had all symptoms to ... |
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| 1997 Saturn SL2 1.9L head/headgasket VIN: 1G8ZJ5277V As always a big THANK YOU to everyone at IATN! After 25 years in this field,I still make mistakes! Many thanks to Dyrel [...] who nailed this in the first response I got! On the DOHC motor ther are 2 holes you can bolt the right chain guide to. It needs to b... |
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