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Professional Automotive Repair Technical Discussions for March 23, 2012 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2009 Buick Enclave CXL 3.6L No Start, blows ecm1 fuse VIN: 5GAER23D99 Came in on the hook with a blown ECM1 fuse. (F28 is by the ECM1 fuse in the under hood panel) You would think it would be a piece of cake to trace down a constant drain, but there are ground wires that run three different ways to three different areas and all ... |
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| 1984 Chevrolet Corvette 5.7L Poor Idle Quality VIN: 1G1AY0785E Have a Corvette we are changing from the Crossfire to Carburetor, have everything except a Fuel Regulator with a return line to fuel tank. Having trouble locating one, hoping someone has done this and has a part number. Thanks for your help... |
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| 1999 Chevrolet K3500 6.5L Excessive Emissions VIN: 1GBHK33F4X This truck Has a long crank after it is warmed up. Upon looking observing the data I found the ECT reading negative 40. I tested the 5 volt refrence and ground wires at the sensor both are good. I checked the 5 volt refrence wire for a short to anny other 5 vo... |
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| 2000 Chevrolet Impala LS 3.8L No Start VIN: 2G1WH55K6Y I have this Impala that will not crank at times. I could not duplicate the problem so I connected some lights on the crank request circuit and starter relay output and removed the remote start interface module. That test found voltage on the crank request circ... |
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| 2001 Chevrolet Cavalier 2.2L MIL Lamp on VIN: 1G1JC12451 Originally replaced rear main crank seal and rear camshaft plate seal. Vehicle came back with 2 codes - system too lean and oxygen sensor circuit codes. Found oxygen sensor stuck at 200 mv - replaced, cleared and tested at idle with no problems. Car came back ... Trouble codes: P0172 (System too rich bank 1) |
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| 2006 Chevrolet Express 2500 4.8L No Start VIN: 1GCGG29V16 Hi guys, I hope you can help with my newest nightmare. This van came in for a no start. found 14 codes in pcm, 8 for o2 sensors, 2 evap, 3 trans codes and the p0300. After clearing the codes and recranking the engine the only codes that come back are 2 o2 heat... Trouble codes: P0300 (Random missfire), P0030, P0050, P0053, P0059, P0449 |
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| 1999 GMC C7500 Topkick C7H042 7.4L No Start VIN: 1GDJ7H1D4X Randomly crank no start when you let of the key it will backfire, cycle the key and it will fire right up and run smooth, cycle the key the next few times and it will start fine?? When you are cranking and it will not start and you inject propane it will start... |
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| 1995 Pontiac Grand Am SE 2.3L MIL Lamp on, no communication is there any way to scan this vehicle without a tech1, the aldl is a 12 pin and does not have a wire in b, has the ground in a and 2 wires directly below a & b, no other wires in the aldl, have tried everything i can think of to get a scanner to work-different... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2000 Chevrolet Silverado 1500 5.3L No Start, Cuts out after performing voltage drop tests i found that the pump ground to the left frame bracket (in frontof the canister vent)had high resistence, cleaned frame mounting point along with groud bolt & eyelet, also checked & cleaned & retiightened ground on right cyl... |
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| 2003 Chevrolet Monte Carlo SS 3.8L Starting VIN: 2G1WX12K63 Checked everything ended up being a bad BCM it would go to sleep and seemed like it would not wake up.I Thank everyone for their help |
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