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Professional Automotive Repair Technical Discussions for February 3, 2011 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1984 Cadillac Fleetwood Brougham 4.1L Excessive Emissions, Hesitation, Stall VIN: 1G6AX6986E Customer complaint of stalling and lack of power on acceleration. Found tbi passages clogged, removed and cleaned. No help. Found fuel pressure low and slow to respond. Found clogged fuel filter. Replaced and retested. Still no change. Found fuel pump bad. Rep... Trouble codes: 52 (Ecm reset) |
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| 1999 Chevrolet K1500 Suburban 5.7L Transfer case VIN: 1GNFK16R3X Thanks to all that reply. I have a coworker who is having problems with his transfer case. It slips under load and before this was going on we noticed the fluid was black and could smell it after awhile of driving. He changed the fluid (autotrak fluid) and not... |
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| 1999 Chevrolet Venture 3.4L heater VIN: 12345ABCDE Hello People Van came into shop with low heater output. I verified complaint with a short road trip and while doing so, scanner read a pretty constant 198 degrees temp. At idle, both upper and lower radiator hoses were not firm even after the road test. I rep... |
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| 2003 Chevrolet Trailblazer LT 4.2L all gears VIN: 1GNDT13S83 Customer brought vehicle in stating vehicle would stop pulling occasionally.If they shut it off n immediately restarted n put into gear it would pull again for an indefinite period of time. It would do just that. After advice from a Hotline,I replaced the ig... |
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| 2003 Chevrolet Silverado 2500 HD 6.0L Poor Idle Quality, MIL Lamp on VIN: 1GCHK23U03 When cruising check engine light comes on with a message on the dash that reads "REDUCED ENGINE POWER" and vehicle goes into limp in mode. If I clear the codes engine power goes back to normal until the problem happens again. Happens about every 5 miles. I red... Trouble codes: P1516 (Predicted vs Actual throttle position correlation error) |
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| 2003 Chevrolet Malibu 3.1L No Start VIN: 1G1ND52J83 This ones got me pulling my hair out pleaase help car came in on the hook dead battery customer said it wouldnt start pushed in the shop and charged battery and went to start and noticed the theft light was on vehicle cranks and runs for a second and dies acte... Trouble codes: B2957 (Security system circuit low), B3031 (Security system in learn mode), U2001 (Invalid i.p.c. Transmitted s.p.i. Data), U0200, U1000 (Loss of class 2 serial data) |
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| 2004 Chevrolet Trailblazer LS 4.2L Can not flash VIN: 1GNDS13S24 This chevy was brought to us from a transmission shop to flash the PCM. They found the codes and a TSB about flashing to PCM for code P0606. We connected to A/C Delcos TIS site and found the update. As we were doing the update, it downloaded and was trying to ... Trouble codes: P0128 (Coolant Temp), P0606 (PCM Fault) |
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| 2005 Chevrolet Workhorse 4.8L No Start VIN: 5B4HP42V15 Truck has repeatedly left the driver sitting and later restarts, it was towed in during a freezing rain storm in a no start condition.When we went to get the truck out of the lot (on a dry day) it started runs fine data stream looks normal.Have performed wiggl... Trouble codes: P0171, P0174 (Fuel trim lean bank 2), P0335 (Crankshaft Position CKP Sensor Circuit), P0336 (DTC P0336 Crankshaft Position CKP Sensor Performance), P0719 (Brake Switch Circuit Low Voltage), U1041 (Loss of communication) |
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| 2006 Chevrolet Trailblazer EXT LT 4.2L starts no run VIN: 1GNES16S66 This is a trailblazer that came in on tow truck.It would start but not run i checked battery 12volts and starting drop to 11, fuel pressue 55psi no codes. The next day the truck started and ran for 20sec. and stalled checked every thing and found nothing there... |
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| 2002 GMC Envoy SLE 4.2L 4wheel drive VIN: 1GKDT13S02 4wheel drive will not shift out of 2 wheel drive |
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| 2004 GMC Sierra 1500 SLT 5.3L door lock VIN: 2GTEK19T04 Hello everyone, I'm working on this 2004 GMC 1500 Sierra SLT 17000Km in only one instant lost the power to driver side door lock, driver side rear view mirror, driver seat lumbar operation and driver side heated seat. there are no burned fuse or broken wire. W... |
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| 1995 Oldsmobile 88 Royale 3.8L No Start, Poor Idle Quality, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1G3HY52K8S Well this one has got me by the balls, need some suggestions, car came in with stalling and no start problems thew scanner on it and came up with 19 codes here are the ones i didnt fit in, p0705 tcc circuit, p1640 quad driver 1 fault, p1650 quad driver 2 fault... Trouble codes: P0703 (Brake switch), P0501 (Vss circuit), P0755 (Trans selinoid b), P1361 (None), P0101, P1619 (Oil life monitor) |
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| 2006 Other GM H3 3.5L Transfercase Issue VIN: 5GTDN13656 Agreed, it does feels like is in stuck in 4 hi. I felt engagement and disengagement from hi 4 to low 4, but it makes no difference from low 4 to full-time 4x4. There is no 2 wd option. I can feel all wheels gripping in normal full-time mode. Customer states it... |
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| 2001 Saturn L300 3.0L No Start VIN: 1G8JW52R71 This car came in from another shop as a no start. They had replaced the timing belt and had the valves replaced in the heads. So i have this problem child now. This car has compression and fuel pressure and is firing but will not start. It has no trouble codes... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1994 Cadillac Fleetwood Brougham 5.7L Poor Idle Quality, Hesitation, Misfire VIN: 1G6DW52P1R thanks for the help i got a factory cap and rotor and all is fixed |
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| 2000 Cadillac DeVille 4.6L Odometer VIN: 1G6KD54Y9Y First, I want to thank all the members who took the time to help. This car belongs to a retired co-worker of mine (Parts guy), a spare time/favor project for me. Many said the charging system voltage was too high. Turns out the voltage increases over a longer ... |
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| 1996 Chevrolet K1500 Suburban 5.7L Transfer Case VIN: 1GNFK16R4T After removing wireing from harnes and checking for damaged wiring and finging none.checked all voltages and grounds - checking continuity on all wireing with no problems found,The owner of the truck did not want to purchase any new parts--he stated that all u... |
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| 2000 Chevrolet Malibu 3.1L No Start VIN: 1G1NE52J4Y I HAVE RECIEVED SEVERAL REPLIES SAYING TO CHECK THE ANTI THEFT SYSTEM I HAVE DONE A COMPLETE CHECK ON THAT PRIOR TO DOING THIS POST AND ALL CHECKED WELL.AT THIS TIME THE CUSTOMER WISHES NOT TO PROCEED AND IM IN PROCESS OF MAKONG AN OFFER TO HIM TO PURCHASDE TH... Trouble codes: P0300. |
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| 2004 Chevrolet Cavalier 2.2L transmission VIN: 1G1JC52F64 thanks for all the help. the problem was the pressure plate i change it out again with a different one and all works great thanks again for your replys. |
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| 1997 Pontiac Sunfire SE 2.2L engine VIN: 1G2JB524XV The EGR system is working fine. Other replies were that the compression ratio had changed using a 97 head on a 99 block. So instead of switching heads, I filled the tank with premium gas and the spark knock is pretty much gone. Since it is my daughters car ... |
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| 2000 Pontiac Grand Am SE 2.4L ABS light on. VIN: 1C2NE12T2Y Another one out the door, unfortunately, because she was selling it I didn't get to fix it. Thanks for all the replies, it actually sounded like it could have been a fun fix to try, I think replacing the gears like most replied would have done the trick. Thank... |
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| 2004 Saturn L300-3 3.0L No Start, MIL Lamp on VIN: 1G8JL54R04 Last progress I made on this thanks to suggestions in fuel pump system I was able to find that the fuel pump relay was not getting the ground signal from the computer to run the fuel pump intermittenly especially when first starting after letting fuel pressure... Trouble codes: P2119 (Throttle Closed Position), P2176 (Min Throttle Position), P0560 (System Voltage), P0700 (TCS Fault), P0261 (P0264 P0267 P0270 Cyl1-3 Injectors), P0458 (Evap Purge Sol). |
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