× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for September 26, 2013
International Automotive Technicians' Network (iATN) - Members Only
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Open Help Requests for GM
Help Request Answers
1995 Chevrolet K2500 Suburban 7.4L Poor Idle Quality, Hesitation, Stall VIN: 1GNDT26N3S
454 SUBURBAN 4X4. Came in stalling, long crank time. Found timing erratic... ie: with timing connector disconnected, base timing is at 14 degrees (only way it will start) when you give it throttle, the timing retards 10 degrees then jumps back to 14 degrees wh...
2002 Chevrolet S10 2.2L Hesitation VIN: 1GCCS14502
I have a2002 chev s10 runs bad stalls check fuel pressure 22lbs should be 56 62 thought fuel pump wrong . I can check the line from pump to filter on dead head and get 80 lbs connect other line going to filter check outlet of filter and get 22 lbs can not unde... Trouble codes: P0179
2007 Chevrolet Silverado 3500 Classic LS 6.6L Excessive Emissions VIN: 1GCHC33D47
this 07 classic duramax smokes black at idle and runs rough, has a miss and an injector knock. truck runs and drives and has plenty of power. smoke never stops. no air restrictions. you can hear turbo spooling. scanner shows misfire codes on 3,5,6, only. stops...
2000 GMC Savana 3500 5.7L Misfire VIN: 1GDHG31R0Y
Vehicle came in with no power complaint. CEL not on .No current codes , P0174 Bank 2 lean "History" code .Road tested and seemed almost like plugged converter. Removed o2 sensors and road tested same , no power. No current or history misfire counts even while ... Trouble codes: P0174
1999 Pontiac Grand Am SE 2.4L Excessive Emissions, Poor Idle Quality, Misfire, Poor Fuel Economy VIN: 1G2NE52TXX
runnin rich n raw fuel comin out of tail pipe,injector pulse at # 4 cyl. is constant bright n other r blinkin normal pulse compession is good at 165/175 Trouble codes: P0200

Fixes & Summaries for GM
Fix/Summary Answers
1974 Chevrolet C-60 366CID Hydrovac Power brakes
Thank you to all that responded. Here is what I have determined:This is a sorry excuse for a brake system. We made progress every step of the way. It now stops ok, not spectacular, but much better. Several people commented about collapsed vac hoses; most of t...
1988 Chevrolet C1500 Silverado 5.7L 1-2 shift VIN: 1GCDC14K6J
Well still don't have this thing fixed dropped valve body and didn't anything. I currently have TV pressure set to 90 PSI and it helps a little. Must be a problem in clutch pack so I will be removing this unit and taking it apart to find out but it will have t...
1996 Chevrolet K1500 Cheyenne 5.0L turn signals/hazzard VIN: 1GCEK19M3T
Hi guys ,customer dropped truck off last night and i drove it first thing this am and it is still blowing the fuse @55 mph so I pulled it on my chassis dyno and ran it up to 90 mph with NO blown fuse...I had checked the rear wiring the other day for trailer wi...
2003 GMC Sierra 2500 SLE 6.0L No Start VIN: 1GTHK24U83
Thank you all for giving my issue your attention. A quick summary of the entire job: Truck came in as a no crank. Tested all of the usual suspects and then performed a no crank pinpoint test. Results of the test= PCM not sending a ground signal to the starter ...
2006 Pontiac Grand Prix GXP 5.3L ebcm VIN: 2G2WC58C06
Thank you to all that provided input with little feedback, sorry for that. The bottom line, came down to the EBCM. When it was rebuilt, they induced the C0236 DTC. We installed a new GM unit, problem resolved. We did find differences in the diag info from ...
2005 Saturn Ion-2 2.2L MIL Lamp on, reduced power VIN: 1G8AJ52FX5
Thanks for the help guys. There is a tsb for this problem. Moisture gets into a connector in the drivers kick panel and causes problems. Trouble codes: P2138.
Prev (Also Available: All, Asian, Chrysler, European, Ford, GM.) Next