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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for August 5, 2010
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Open Help Requests for GM
Help Request Answers
2006 Cadillac SRX 3.6L 1-2 Shift Solenoid VIN: 1GYEE63776
The original customer complaint was that the vehicle would have no power on take off, and the check engine light was on. Scanned the car and found code P0973 1-2 Shift Solenoid Control Circuit Low Voltage. After test drive with tech 2, found that after about 5...
1994 Chevrolet motorhome 7.4L engine VIN: 1GBKP37N8P
hello guys, i have a motorhome here with a tonawanga edition 454 engine.vehicle is consuming excessive oil causing alot of smoke out of tail pipe while driving. on first inspection noticed alot of vacuum in valve covers with pcv valve out and plugged, i replac...
1999 Chevrolet K1500 Suburban 5.7L Ac system VIN: 1GWUYGYT87
Hey guys- This Burban is driving me nuts. It came from a used car lot,guy didnt have ac. Had no freon I charged it up and put dye in, was very cold and worked good. Next day he came back could see dye all over the rear ac lines. We replaced both low and high s...
2000 Chevrolet Blazer LS 4.3L Ac Pressure VIN: 1GNCT18W4Y
Truck came in blowing warm high pressure high and low sides. Tore down and found alot of metal at orifice. Installed new ac system as described in repair history. Now vehicle wont cool at idle. Blows 41 degrees going down the road. Blows 60 if revved to 2500 r...
2001 Chevrolet Cavalier Z24 2.4L wheel bearing VIN: 1G1JF12T21
Attempting to put an old issue to bed. Have replaced multiple wheel bearing assys on passanger side of vehicle. Car has also started eating tires in as little as 3 months. we re going to place the car on alignmer to see if there is somehting bent but eyeballin...
2002 Chevrolet S10 4.3L No Start VIN: 1GCCS14WX2
Hi Guys, customer was driving truck and started to loose power,He replaced fuel filter and truck ran fine for a week then the truck would not start. Had truck towed in to our shop, We checked fuel pressure at 61 psi, has spark at spark plugs, no codes, spark p...
2002 Chevrolet Express 3500 6.5L Poor Idle Quality, Surge VIN: 1GBJG31F52
I have this box van that is driving me crazy and your help will be much appreciated.While driving this van it will intermitantly idle up as if you were pushing the gas pedal down.Customer states it gets so bad that you have to stand on the brake pedal with two...
2003 Chevrolet Silverado 1500 5.3L 2-3,3-2,4th? VIN: 2GCEK19TX3
4l60e came in with rear planet hub separated from broken ring gear,overhauled with new electronics,convertor,beast,and other essentials and gave back to customer to install.he calls saying slipping in 3rd,so we pick up and indeed usually not on first upshift b...
2004 Chevrolet Express 2500 LS 6.0L Belt Tensioner VIN: 1GCGG25U84
Customer bought van used a few weeks ago. He lost the a/c belt and brought it to me. I put both belts on. A/c tensioner seemed ok, not siezed like most, so i reused it. Cust called me and said he was gonna replace a/c tensioner himself with dayco part. That te...
2004 Chevrolet Tahoe LS 4.8L Poor Idle Quality, Hesitation, MIL Lamp on VIN: 1GNEK13V54
HELP! This Tahoe has been to two shops prior when I first saw it. No throttle response, "reduced engine power" message, codes P0120, P2101, P2135 stored. First shop replaced the throttle body assembly and the pedal assembly. Problem went away for a few days, t... Trouble codes: P0120 (p2101-), P2101 (p2135-), P2135
2005 Chevrolet Express 3500 6.0L rear a/c VIN: 1GAHG39U15
this is the van from hell ( this is a fleet van) 1. replaced the rear a/c alum lines with new alum tubing 2. replaced compresser clutch was ready to lock up 3. this a/c worked like it was at the south pole 4. came back two days latter with rear blowing hot fro...
2006 Chevrolet Silverado 1500 LS 4.3L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 3GCEC14X16
we have been all over this thing it is missing on 2,4,6 injector pulse is good on ye/bk(cylinder 6),l-bl/bk(4 cylinder),l-gn(2 cylinder). We dropped the exaust and there was no change ignition spark looks good. Fuel trims sht term is 2-6. All fuses have been c... Trouble codes: P0300, P0101
1997 GMC Safari SL 4.3L Cuts out VIN: 1GKEL19W2V
blowing fuel pump fuse replaced pump, still blows fuse only when pump relay is in and also very intermitantly, any common rub through locations? thanks
2006 Pontiac Torrent 3.4L hold start feature VIN: 2CKDL73F36
hey guys just wanted to say all the help that this site provides is great thanks.I know this torrent has the hold start feature but on occasion the vehicle will start and idle a little low the hold start feature will keep the starter engaged for a extra couple...

Fixes & Summaries for GM
Fix/Summary Answers
1998 Buick Century Custom 3.1L dies VIN: 2G4WY52M7W
WOW thanks for all the replies (36) in all Thanks. To many replies to thank everyone but again thanks to all that replied. The genenral consensus was the crank sensors.we replace both sensors and the customer picked up the cal and drove it 200 mile with no pro...
2002 Buick Regal LS 3.8L No Start, Stall VIN: 2G4WB55K02
Thank all of you for your valuable info. This car had multiple issues, one being the PCM for the stalling. Second the ignition switch was the problem for the dash lights flashing. It has been gone for a week and no news(no news is good news). Thank you all aga...
2000 Cadillac Eldorado ESC 4.6L Hesitation VIN: 1G6EL12Y8Y
Plugs and boots fixed the misfire code and needs torque converter and tcc solonoid to fix transmission codes . Customer declined due to price. Thanks Mike P
1996 Chevrolet C1500 Suburban 5.7L 1-2 Shift VIN: 1GKFK16RXT
I have to thank all of you that offered help, we have scoped the tps too many times and replaced it with what GM says is the correct one but no change. This only happens once every 2-3 weeks or more as my customer that is very old, does not go to far so it may...
1998 Chevrolet Blazer 4.3L transmission VIN: 1GNDT13W2W
Thanks Guys... This one is fixed. The ignition switch was NOT the problem. I have been down this road before, and when it is an ignition switch problem it sets multiple codes... This one turned out to be the PCM. Agian, this vehicle was from a used car dealer,...
2000 GMC C3500 Sierra SL 7.4L Raw fuel at canister VIN: 1GTHC39J7Y
Thanks for the replies everyone. Replaced the canister and purge valve, sent down the road. Will wait and see if this is a permanent fix.
2004 GMC Yukon Denali 6.0L MIL Lamp on VIN: 1GKEK13T84
Looks like this one either needs a module program on a new module and program . Sent to dealer because i dont have reprogram software. Mike P
2006 GMC Sierra 2500 HD SL 6.6L 1-2 Shift VIN: 1GTHK23D46
Found out vehicle had been in another shop for wiring problems. Seems customer had 1 million candlewat spotlight pluged into cigaret lighter and kept popping fuses. So he installed a 40 amp fuse in place of a 20amp and melted some wirring. Took wirring harness...
2000 Oldsmobile Alero GL 2.4L abs VIN: 1G3NK12T6Y
the fix was poor connections at the ebcm and the motor pack. fixed the connections no more light thank to all replied
2001 Pontiac Aztek 3.4L evap, trans VIN: 3G7DA03E31
I was able to find the evap leak on the purge solenoid connection. As far as the p1811 trans code I was able to feather the throttle during the shifts enough that I could run the monitors and get the vehicle through the inspection. I informed the customer that...
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