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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for April 22, 2014
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Open Help Requests for GM
Help Request Answers
2002 Buick LeSabre Limited 3.8L No Start VIN: 1G4HR54K42
After repairs, vehicle will not start. Holding throttle at 100% allows engine to start, but very poorly. Sputters and bucks as well, and almost immediately stalls. Sounds like ignition wires were crossed, but have verified proper orientation via information on...
2003 Cadillac CTS 3.2L Transmission VIN: 1G6DM57NX3
Hello fellow techs out there! Got this CTS with no reverse problem intermittently. First time around came in no reverse at all! Scanned systems found P0722. Checked TSB's on Identifix about this code, common problem is a pulse with solenoid in the trans can be...
1995 Chevrolet K1500 Cheyenne 5.7L Stall VIN: 1GCEK19K1S
This truck dies when pulling up to a stop to make a turn. I get it to stall by putting it in gear w/foot on brake, and turning against stop in steering. Does not stall in park or neutral, but only when load is on engine at an idle, when it is completely warmed...
1995 Chevrolet C2500 Suburban 7.4L Excessive Emissions VIN: 1GNGK26N3S
fuel trim @129 long. shot@128 fuel pressure 35psi. no exhaust leaks found. timing in spec
2002 Chevrolet Malibu 3.1L Unknown VIN: 1G1ND52J22
common intermittant crank with 55psi fuel pressure and spark but no start...wait awhile and starts right up perfect...always have good fuel psi and spark when i get crank but no start...is this the passlock failing that prevents the injectors from getting elec...
2007 Chevrolet Malibu Maxx LT 3.5L 1-2 VIN: 1G1ZT68N57
No Codes present. Car has second gear start, all solenoids appear to function and have proper resistance. Noticed that when in drive and brake on, first gear is commanded (1-2 solenoid on, 2-3 is off) as soon as wheels start to turn the second gear is commande...
2004 GMC Yukon SLE 5.3L abs VIN: 1GKEK13Z44
We're replacing the steel brake lines with a factory kit. I had one of my techs remove the lines to allow removal of the ABS unit bolted to the chassis. He marked them upon removal but in handling all of his markings disappeared. Does anyone have a diagram or ...
2002 Pontiac Grand Prix GT 3.8L Stall VIN: 1G2WP52K82
Vehicle came in about 6 weeks ago with P0101. Vehicle will stall when going over 50 mph. Will then restart and stall until codes are cleared. Cust said he replaced MAF with reman and it ran fine for a week. I replaced MAF again with OE and it ran fine for anot... Trouble codes: P0101 (Mass air flow circuit out of range)
2003 Pontiac Aztek 3.4L Dash Cluster VIN: 3G7DA03E93
Sorry in advance for lack of info, car came from used carlot, said they put in a dash cluster, abs, brake, and stability control lights are on, also constant dinging, problem is it has no abs sensors for it is not a antilock system, im not sure witch way to go...
2001 Saturn L200 2.2L MIL Lamp on VIN: 1G8JU52F81
I have this Saturn setting a P0440. Ftps v reading only 1.55v. Going through the trouble tree, with fuel cap off ftpv should read 2.3 to 2.8v. Tried a new sensor with little change. checked wiring for any kind short or open and found none. With sensor disconne... Trouble codes: P0440 (Evap fault)
2003 Saturn L200 2.2L No/low heat VIN: 1G8JU54F13
Car came in with Thermostat stuck open and complaining of no/low heat from vents. Replaced thermostat, flushed heater core with hose, used vacuum filler to remove air pockets from cooling system. Very little heat. Did notice if we raise the front of the car up...

Fixes & Summaries for GM
Fix/Summary Answers
1971 Chevrolet C30 Pickup 6.6L hoses
Thanks everybody for the replies. #1 was the vacuum supply. #2 was for the recirc door actuator on the passenger upper firewall. #3 was for the coolant valve inline the heater hoses, and also T'd off to the right cab vent at the passenger kick panel. Again...
2004 Chevrolet Venture LT 3.4L 3rd Gear VIN: 1GNDV13E24
Well, most said it was possible in the vehicle, but being an AWD there was just no way we could get the cover off. We removed the unit and found quite a bit of debris sticking the valve so it wouldn't return. Put a different reman'd valve body in it, put it al...
2005 Chevrolet Express 2500 4.8L power steering pump VIN: 1GCGG25V85
You guys hit the nail on the head, the reman pumps are JUNK! I installed a new OEM pump, in line filter and flushed the system. Van has been gone for a few weeks and customer has no complaints. Lesson learned, thanks for the help.
1995 GMC K2500 Suburban SLE 7.4L No Start, Poor Idle Quality, Hesitation VIN: 1GKGK26NXS
It turned out to be the reluctor had spun on the shaft. Just could not get my head past what appered to be retarded timing. When in fact my timing had actually jumped to the next cylinder. Number 1 was esentually no longer first in order
2008 Pontiac G6 2.4L Mechanical VIN: 1G2ZF57B48
Hello, Thanks again to everyone who offered help. I could not have fixed this vehicle without you guys. As many of you noted their was a TSB for the cam reluctors being out of syn. I could not locate the TSB for my specific vehicle on Alldata. After I was ...
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