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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for December 13, 2011
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Open Help Requests for GM
Help Request Answers
2004 Cadillac CTS 3.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G6DM57754
Vehicle came in with check engine light blinking and above listed codes. Cleared codes. Codes returned shortly after restart, did not drive vehicle. Injector #1 was not working. Replaced injector-still not working. Unable to actuate fuel injectors with scanner... Trouble codes: P0201 (Cyl 1 Injector circuit porblem), P0300 (Cyl misfire detected), P0301 (Cyl 1 misfire detected), P0522 (Engine oil pressure sensor circuit signal low), P2008 (IMRC solenoid control circuit fault)
1999 Chevrolet K1500 LS 5.7L Stall VIN: 1GNFK16R2X
This suburban is kicking our butts. it stalls intermitatly. it can run fine for four hours and next time 10 mins in it has stalled 7 times. only stalls at idle. seems to me like a momentary loss of ignition.Has New fuel pump module, has new injector spider ass...
2002 Chevrolet Venture LS 3.4L Passenger side axle seal leak VIN: 1GNDX13E22
Passenger side axle shaft seal leaks. We replaced axle for torn C/V boots and at the time the seal was not leaking. We've replaced the seal 4 times and the extension housing bushing. We also tried a total of 3 axles and still the axle seal leaks. Also checked ...
2005 Chevrolet Astro 4.3L Sdm VIN: 1GCDM19X15
Just a general question. Air bag light on all the time. No communication with SDM. Removed seat and found SDM damp and corroded. I know it needs to be replaced what I can not find out is if it needs to be programed or reprogramed if a use one is used and is a ...
2005 Chevrolet Silverado 1500 4.3L Misfire
This truck idles fine. above idle #4 cylinder will misfire. I can hook up a spark tester on 4 and watch the spark get weak and then will quit firing altogeather. under a snap throttle it will not misfire or on decel it fires always. I have tried this spark tes... Trouble codes: P0300
2008 Chevrolet Uplander LS 3.9L no heat
no heat at idol, system full.flushed heater core,has rear air
1999 GMC K2500 Sierra SLE 5.7L Cuts out, Stall, Misfire, MIL Lamp on VIN: 1GTGK29R7X
Here is a good one for everyone. This truck came in with the complaint that the ECM1 fuse blows within 20 miles of driving. Engine falls dead and no restart until fuse is replaced. Engine misfires before fuse blows and engine pings. It originally had a missing... Trouble codes: P0141, P0758, P1351
2002 Pontiac Grand Prix SE 3.1L no start
put a new motor in money. Made sure that every thing was hooked back up. try to start it and will not start dont even want to go. I have check for gas and spark.
2001 Saturn L200 2.2L Stall, MIL Lamp on VIN: 1G8JU52F31
Hi, The customer's concern is check engine light, and service light is on, and intermintetly car stalls at stop lights. She says the motor always starts right back up again. The only DTC I have is P1640: Driver 1-Input High Voltage. I have driven this car over... Trouble codes: P1640 (Driver 1-Input High Voltage)

Fixes & Summaries for GM
Fix/Summary Answers
2000 Cadillac Catera 3.0L Heater No Heat VIN: W06VR54R4Y
Thanks for all the advice, The Water pump on the passenger side of the engine compartment was changed within two years. To verify that it was working I sourced hot coolant from one of the heater lines coming off the radiator as a test. I hooked it up to the pu...
2004 Cadillac DeVille 4.6L traction control VIN: 1G8KD54Y64
thanks to all that replied. the fix was simple a new brake lamp switch and a new raised stop lamp assy(old unit had over 60k of resistance and new one had 375).thanks again to all.
2000 Chevrolet Impala LS 3.8L MIL Lamp on VIN: 2G1WH55K8Y
Well sure enough was another bad ECM, luck of the draw I guess. Appreciate all the help, thank you. Trouble codes: P0134 (B1s1 02 sensor ckt inactive).
2004 Chevrolet Aveo 1.6L no heat VIN: KL1TD52624
hey guys, thanks for all your replies. i also agree that there has to be an issue with a blend or mode door inside the housing. the custy needed his car back and said he would return after the new year. kevin i did try to boroscope the housing but the evap was...
2004 Chevrolet Silverado 2500 6.0L Misfire, MIL Lamp on VIN: 1GCHK29U44
Thanks for the help! I have been waiting for the vehicle to come back in with the engine light on again but it has not returned yet, (it will most likely be back when the owner starts plowing snow). I added 1/2 a can of seafoam oil additive before it left so m... Trouble codes: P0300.
2004 Chevrolet Suburban 1500 LT 5.3L shift linkage VIN: 1GNEC16Z94
I throughly checked the Motor and Trans Mounts . I finally removed pan and installed new Roller and Spring assembly on Rooster comb - shifter detent device in Trans. I test drove vehicle for two days and had no problems but could tell difference in shifting fr...
2006 Chevrolet HHR LS 2.2L Steering VIN: 3GNDA13D46
I haven`t fixed this car because customer doesn`t have the funds to repair. She waited several weeks before returning. The motor is the problem. She will have to wait until the first of the year. Thanks for the help.
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