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Professional Automotive Repair Technical Discussions for May 23, 2011 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1998 Cadillac Seville STS 4.6L Blower VIN: 1G6KY5493W Vehicle has no codes in system. All aspects of hvac system work properly - temp change, mode change, cold a/c & hot heat. The problem is very little airflow from vents. Even when i overide auto feature and put fan speed on high, there is still low airflow. I h... |
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| 1997 Chevrolet Blazer 4.3L No Start VIN: 1GNC513W2V Towed in-no start--has no spark-no injector pulse-you can hear the fuel pump prime but has no fuel pressure when cranking--no codes-not sure where to start-not used to so many problems-maybe some one has run across this before-common wiring fault???need help t... |
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| 2001 Chevrolet Monte Carlo SS 3.8L No Start, Theft VIN: 2G1WX15K61 This car has me pulling my hair out, theft light is not on when the car is driven. It will start 10 or more times but after hot soak will not start unless the battery is disconnected for a few seconds. Reflashed the BCM thinking it was the theft relearn but st... |
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| 2001 Chevrolet Express 3500 5.7L Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1GCHG35R91 I have a slight misfire on #5, #7 and sometimes #6 and #2 cylinders. Primarely it is #5 and #7 though. At idle it runs smooth with only showing a misfire on those 2 cylinders sometimes(count is below 5). When I give it gas for a few seconds(vehicle in park / n... Trouble codes: P0300 |
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| 2003 Chevrolet Silverado 2500 HD LS 6.6L cyls 4,6,8 VIN: 1GCHC29113 Another shop referred this truck to me it has coolant in cyls. 4,6,and 8. over the weekend it gravity fed into cyl 4 only but under pressure all three cyls fill up and hydro lock!! Compression is 400psi across the board and other shop suspected the injector sl... |
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| 2006 Chevrolet Silverado 1500 LS 5.3L MIL Lamp on VIN: 2GCEK13T66 This truck came in with 36000 miles showing and a check engine light on part of the time. We checked the codes out and found the codes listed and low O2 voltage on both downstream O2s. We checked the operating temp of the engine for possible stuck/incorrect t... Trouble codes: P0137 (O2 Circuit Low Voltage Bank 1 Sensor 2), P0157 (O2 Circuit Low Voltage Bank 2 Sensor 2), P2A01, P2A04 |
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| 2006 Chevrolet Cobalt LT 2.2L Smoking/Using Oil VIN: 1G1AL55F66 This 2006 Cobalt with only 63K miles on it is using a quart of oil every 100 miles. It has 175 to 185 psi compression in each cylinder, and the leakdown test checks very good at less than 5% loss of air in each cylinder (checks 95% good). This car will smoke... |
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| 2007 Chevrolet Silverado 1500 Classic WT 4.3L MIL Lamp on VIN: 1GCEC14X77 Cold idle is 1,500 rpm's for about a minute or so and controls respond when shifting to "D" or "R" to maintain idle but after a minute or two of warm-up the rpm's elevate to a fixed 3,000 rpm's until shut down. When engine is shut down a large hissing is heard... Trouble codes: $10, P0121, P0122, P0507, P0106 |
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| 2004 GMC Savana 3500 6.0L MIL Lamp on VIN: 1GTHG35U64 I just replaced the engine on this van due to low oil pressure on the old engine. I was very meticulous about the installation. The engine runs fine but the customer told me the check engine light has been coming on and off, somtimes flashing. I asked if he ha... Trouble codes: P0300 |
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| 2006 Pontiac G6 3.5L Brakes VIN: 1G2ZG55876 We are having a problem with the brakes.we can start the car and in about five minutes at idle the brakes lock.no codes.we removed vacum hose from booster and removed fuse to abs.it done the same thing.we don,t hear the abs motor running.we though it might be ... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1993 Cadillac Allante 4.6L Drivers Door VIN: 1G6VS3392P WELL THE DOORS OPEN I WAS ABLE TO WEDGE THE TRIM OPEN ENOUGH TO SEE DOWN IN THE DOOR AND TOOK A [...] HOSE/HOOK TOOL AND AT THE BOTTOM OF THE LATCH IS A HOLE WHERE IT LOOKS LIKE A PEACE OF LINKAGE HOOKS TO AND PULLED IT AND DOOR OPENED. CALLED DEALER AND TRIED ... |
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| 1997 Cadillac Seville STS 4.6L Excessive Emissions VIN: 1G6KY5297V Okay all, its fixed now all that happened here was the cat got replaced with a used o.e. cat from a grand am. a little hacked up, not my first choice to do it. car has been off the road for a while with battery dead prolly why moniter not set and thanks to Nea... |
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| 1996 Chevrolet Camaro 3.8L Poor Idle Quality, MIL Lamp on, High idle VIN: 2G1FP22K6T Thanks to all who replied, ended up pulling throttle body off and it was caked with carbon cleaned throttle body and had one coil that was dead. thanks again Trouble codes: P0122, P1122 (Tp circuit int. Low voltage). |
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| 2007 Chevrolet Equinox LT 3.4L Computer VIN: 2CNDL73F27 The Equinox is fixed.. We had a new BCM programmed in to the vehicle and it took care of the Problem... We think the main body ground coming from the battery may have been the reason of the BCM failure, as it was corroded aand not tight.. There is a service ... Trouble codes: U0131, U0140. |
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| 2008 GMC C4500 Topkick C4C042 8.1L engine VIN: 1GDG5C1G58 thanks for the help guys.as most of you said the rockers were the problem.the noise was mostly in the right bank and after removing the valve cover at least 3 were very loose and worn.the truck is a rental truck for,i dont know if i can say the name of the fle... |
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| 1995 Oldsmobile Cutlass Ciera 3.1L Excessive Emissions Thanks for all the great ideas. I've always found HC problems (combustion Quality) to be a bit more annoying than CO failures (fuel/air mixture- Quantity). As stated eng compression was good (200-210 psi), vac was steady on gauge & DSO. That to me tends to mak... |
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| 1988 Pontiac Bonneville SSE 3.8L No Start VIN: 1G2HY54C0J I replaced the crank sensor (it was the one with dual windows). The vehicle still stalled. Further testing revealed a faulty ignition module - apperently it can produce a spark signal without an injector pulse. Replaced the ignition module and it hasn't bee... |
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| 2004 Pontiac Grand Prix GTP 3.8L Abs Module VIN: 2G2WR52474 The problem ended up being EBCM just as I and posters thought.I just had reservations after used one installed had exactly sams code,symptoms and data readings as original.I appreciate all the people who posted taking the time to reply.The info on Alldata was ... |
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