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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for January 8, 2015
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Open Help Requests for GM
Help Request Answers
2006 Buick Lucerne CX 3.8L No Start, no crank VIN: 1G4HP57206
Cleared fault codes, the P1629 is the only code remaining. Verify current correct trans selector operation. Have power and groud at theft module. Have no communication with theft module, drivers door module, and passenger door module. Low speed GMLAN shows 16.... Trouble codes: P1629 (Theft Deterrent Fuel Enable Signal Not Received), P1819 (DTC P1819 Internal Mode Switch - No Start/Wrong Range)
1982 Cadillac DeVille 4.1L Stall VIN: 1G6AD6989C
Hello all. I need some help with this oldie. The vehicle stalls only during parking lot turning. What I mean by that is the vehicle never stalls on the road during turning or at a traffic light. Idle speed is correct and the idle speed motor extends and retrac...
2006 Cadillac CTS 3.6L Both Front Seats VIN: 1G6DP57706
Complaint that both front seat heaters (cushion and back) stopped working at the same time. When switches activated, display on HVAC shows they both are on, which is confirmed by scantool data. Fuse boxes are under rear seat - when switches activated, relays ...
1997 Chevrolet K1500 Suburban 5.7L No Start VIN: 3GNFK16R3V
Vehicle came n with a no start, charged the battery and started testing things, customer had been working on suv before us. found that it had no pulse at the inj. wires were good, replaced the pcm and reset the security, now I have pulse but still does not sta...
1998 Chevrolet S10 LS 2.2L No Start, Misfire VIN: 1GCCS1946W
Plugs are gas fouled changed and still no start , pops back through intake like its out of time , replaced ign module no change, checked timing chain its right on, sometimes it will start if you hold it to the floor and seems to run ok after ya get it started.... Trouble codes: P0335 (Crankshaft pos sensor circuit), U1000 (No state of health from module), P1626 (Veh theft det fuel enable signal loss)
2006 Chevrolet Trailblazer LT 5.3L Misfire VIN: 1GNET13M86
I have an 06 Trailblazer with the displacement on demand 5.3 engine.It came in last February with a collapsed D.O.D. valve lifter on the left bank.Customer had us replace lifters on left bank.Truck came in a couple months ago with a collapsed D.O.D. lifter on ... Trouble codes: P0300
2008 Chevrolet Cobalt LT 2.2L MIL Lamp on VIN: 1G1AL58FX8
Hello and thanks. As I am primarily a foreign car tech, this car has me perplexed. It came in with DTC P0128. R&R'd the thermostat, can see it is physically bad. Replaced stat and ran engine. My problem is that (with two different Snap-on scan tools) I get dif... Trouble codes: P0128 (Engine coolant temp)
2008 Chevrolet Silverado 1500 WT 4.3L No Start, MIL Lamp on VIN: 1GCEC14X48
Customers original concern was a no crank condition. Found no C.E.L. illumination on dash. Scanned vehicle and no communication with ecm but can communicate with all other modules. checked B+ and grounds all good. Installed new ecm and C.E.L. now flashes on da... Trouble codes: P0315 (Ckp variation not learned), P0602 (Module not programmed), U0121 (Lost communication with abs), U0140 (Lost communication with bcm)
2008 Pontiac G8 3.6L windshied wipers VIN: 6G2ER57768
I have multiple emissions related codes. And no windshield wiper operation. I have no power at any of the under hood fuses. I do have power at the main feed (Big B+) wire. I have checked on the G8 forum, and downloaded the fuse box identification of the proper...

Fixes & Summaries for GM
Fix/Summary Answers
2009 GMC Sierra 2500 HD WT 6.0L brake pedal switch VIN: 1GTHK43K89
thanks for the replies. So after two after market switches i took the advice given and ordered a new OEM switch from the dealer and problem solved. Im suprised the aftermarket guys dont see all the warranty switches coming back and say hey lets make them actu...
1998 Saturn SL2 1.9L Engine VIN: 1G8ZK5276W
Upon doing the fuel pump assembly due to the inoperative fuel pump sender unit. Found gas tank was completely empty. Replaced fuel pump filled gas, car runs fine now. Thank you all for your help! Dead on with the fuel issue.
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