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Prev Professional Automotive Repair Technical Discussions for July 27, 2012
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Open Help Requests for GM
Help Request Answers
2004 Buick LeSabre Limited 3.8L Poor Idle Quality, Cuts out, Stall VIN: 1G4HR54K34
Hello all, this car came in originally with a complaint of not start and stall. I get in the car and I am able to power brake it into the garage but runs terribly, wouldn't take gas. Throw the scanner on it check for codes, had the p0101 MAF code. Looking at d... Trouble codes: P0101, B1327
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2010 Buick LaCrosse CXL 3.0L Sun Shade VIN: 1G4GC5EGXA
Sunroof shade does not close all the way. It needs to travel another inch to be completely closed. We have tried the initialization/teach process for both the sunroof and the sunshade and it still doesn't close. Sunroof works fine. We also removed the sunroof ...
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1955 Chevrolet Bel Air 3.8L Starting VIN: C55T186464
This car will start and shut right off as soon as you let key back.There is no power to ign coil on run position.The power comes from key switch to resistor then back through key switch and out to ign coil as near as i can tell without striping complete harnes...
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1991 Chevrolet Cavalier RS 3.1L Poor Idle Quality VIN: 1G1JC84T2M
I have the nice old cavalier here. Has a rough idle, smells like its runing rich. Has no codes in it. Pulled a plug looks pretty black but fairly recent change. Watching pid data, o2 switchs, verified coolant temp sensor is correct. Can't see any fuel trim pid...
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1998 Chevrolet Express 3500 5.7L compressor VIN: 1GCHG35R3W
Out of my comfort zone here as I do mostly European makes. Customer concern is that the A/C started blowing warm after roughly an hour of driving. He arrived at his destination and left it idling for 15-20 minutes and when he returned it was blowing cold again...
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2000 Chevrolet Tracker 2.0L Drl VIN: 1CNBJ18C7Y
I have a 00 chevy tracker that won't start until the drl comes on.have checked all fuses as well as codes-no check engine light or codes.condition present hot or cold,rain or shine.if key is on and drl lights up,it will start and run.if let idle and drl shuts ...
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2005 Chevrolet Colorado Z85 LS 3.5L ABS system VIN: 1GCCS13655
hi techs. 05 Colorado 3.5L has a front right wheel lock-up we replace the calipers, and b/pads. bleed brake system after all this work we re-test vehicle and notice that the front RT wheel won't turns freely. found abs system code for front right wheel sensor ...
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2009 Chevrolet Malibu LTZ 3.6L mode door VIN: 1G1ZK577X9
We need to replace mode door number three.its the one that changes the position of the air current. the actuator comes with a plate attached to it that three arms are supposed to fit into. problem is you cant see them to install them when you get the whole ass...
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Fixes & Summaries for GM
Fix/Summary Answers
2003 Buick Park Avenue 3.8L air blend doors VIN: 1G4CW54K03
turns out the system needs to reset itself back to original settings to do this you remove fuse to reset system and retest all doors to confirm repair all good now
5
1972 Chevrolet Corvette 7.4L Unknown VIN: 1Z67W2S508
Wow, a lot of guys out there know there stuff on a/c systems! We ended up draining the compressor oil, adding 6 ounces of PAG, installed conversion port fittings, and charged with a total of 2.15 lbs of R134a. It blows so cold it turns the return line [...] ...
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2003 Chevrolet Express 3500 6.0L fuse# 23 VIN: 1GBHG31U83
SO THIS VEHICLE IS CONVERTED TO A CARGO VAN... AND HASE SOME AD ONS IN ENGINE AREA THAT DONT MAKE SENSE.. A BRACKET ON BANK #2 THAT HOLDS DIP STICK HASE A FUNNY LOOKING EMPTY BRACKET ADDED ON.. THE HARNESS THAT FEEDS POWER TO MAF SENSOR HASE BEEN EXTENDED AND ...
17
2010 Chevrolet HHR LT Panel 2.2L No Start VIN: 3GNBABDB6A
Thanks again for all the replies. After further testing I found that the reason the codes were being set for no communication with the ABS and SIR modules was not due to a problem on the high speed lan like I thought. The body control module is the gateway for... Trouble codes: B1370 (SDM Modul Device Ignition 1), B0090 (SDM Rollover Sensor), B0081 (SDM Passenger Presence System), U2108 (Lost communication with ABS Module).
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2003 GMC Savana 2500 5.3L Misfire VIN: 1GTFG29TX3
The intake manifold did have a slight twist to it. Customer refused to buy new manifold. We reassembled with felpro 'saver' gasket set. These gaskets have oversized sealing surfaces. Van ran well for 1 week then same problem. He has decided to trade it in as i... Trouble codes: P0300 (random cyl missfire).
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2003 GMC Safari 4.3L Front evaporator VIN: 1GKDM19X33
We evacuated the system and recharged with a half pound less R134 than recommended, and gained about 10 degrees cooling. We then insulated around the accumulator, lines and the evaporator housing which gained additional cooling. This one is still a puzzler, bu...
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1995 Pontiac Grand Am GT 3.1L Multiple DTC's VIN: 1G2NW15M0S
Robert was 100 % correct on this found the ERLS fuse blown. Replaced the fuse with a/c off and everything works. As soon as I turned on the a/c blew the fuse guessing my a/c clutch is shorted! Thanks for all the reply's! Trouble codes: 86 (54 -), 54 (99 -), 99 (21 -), 21 (45 -), 45 (44 -), 44.
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2005 Pontiac GTO 6.0L Ignition VIN: 6G2VX12U05
Bad PCM internal failure. Not sure how it came about the car was just sitting outside. Maybe internal corrosion. Signal was getting to PCM but not sending signal to fire ignition.
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2003 Saturn L300 3.0L MIL Lamp on VIN: 1G8JW54R53
thanks for all the helpful thoughts,but i have still not turned this engine light off.i plan to get a pcm and program and see what happens and then the bcm.thanks again
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