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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for February 13, 2013
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Open Help Requests for GM
Help Request Answers
2003 Cadillac CTS 3.2L MIL Lamp on VIN: 1G6DM57N53
This car came in with heater circuit codes for the bank 2 sensors 1 and 2. Replaced both and the light would not stop coming on. I followed the flow chart and wiring diagrams that I found online and come to find out that the bank 1 sensor 2 and bank 2 sensor 2... Trouble codes: P0133, P0153, P0135
2005 Cadillac STS 4.6L door lock VIN: 1G6DC67A55
hello techs. I have the general managers cadillac in here with a driver door malfunction. The passive lock system wont open the driverside door when the handle is pulled. Now the passengerside works like this ; use the key fob to lock. then as long as you have...
1995 Chevrolet Blazer 4.3L Cuts out, Stall, MIL Lamp on VIN: 1GNDT13W5S
This vehicle was dropped off, starts and runs but if accelerator is feathered it will run up to 2500 rpm's and then bog down and cut out. I am thinking the timing chain is wore out because I can't see that the timing advance is working on the Verus. I have tri...
1999 Chevrolet Blazer 4.3L No Start
Vehicle came in no start. Checked spark at plugs found almost no spark. Checked at ignition coil found 30kv+ of spark. Decided to replace cap and rotor still no spark at plugs. Replaced cap and rotor again with better quality and replaced spark plug wires as p...
2000 Chevrolet Blazer LS 4.3L rear suspension or drivetrain VIN: 1GNDT13W3Y
I have this blazer with a squeeking,brake rotor chattering, rotational noise mostly at slow speeds with light acceleration. Sometimes turning aggravates the noise and the noise changes sides. I have placed a sthethoscope on various parts with the rear differen...
2003 Chevrolet Silverado 2500 HD 6.6L rear housing VIN: 1GCHK29183
Can anyone tell me if I can replace the rear housing on an Allison trans without removing the transmission? It has a small crack and leaks. All I can find on mitchell is that you have to stand the trans on its front end and measure the end play. Thanks for any...
2004 Chevrolet Avalanche 2500 8.1L MIL Lamp on VIN: 3GNGK22G24
I need to know if anyone has had an encounter with one of these beasts. It has a 8.1 liter v-8 and it is 4 by 4 and lifted.it has dual tanks in this avalanche 2500, this vehicle is supposed to have fuel transffered to the main tank whrn the pcm commands it, an... Trouble codes: P2636 (Secondary fuel pump flow insufficient)
1999 GMC Sierra 1500 SL 4.8L radio VIN: 1GTEK14VXX
radio shuts off when using turn signals.may take seveal days for radio to come back on.will come on driving or at start up. I pulled radio and found yellow wire at 4 wire connector was losing battery voltage when radio would shut down. when radio is shut down ...
2006 GMC Envoy SLT 4.2L MIL Lamp on, Hard starting VIN: 1GKDT13S06
Cust replaced battery 2 weeks ago after if was dead in driveway one morning. Couple days later code for throttle body came on ran fine, I cleaned and erased code all ok. Now 2 weeks later set a codepo 601for contr module rom malfunction, and hard starting firs... Trouble codes: P0601
2007 GMC Canyon SLT 3.7L MIL Lamp on VIN: 1GTDT13E37
Hy everybody, I have a long time customer that had a service engine soon light on he stopped at the shop and I pulled the codes they were a P0102 MAF sensor circuit low frequency and P0449 EVAP vent solenoid control circuit. He was in a hurry so I cleared code... Trouble codes: P0171 (Fuel trim system lean), P0420 (Catalyst system low efficiency Bank 1)

Fixes & Summaries for GM
Fix/Summary Answers
2003 Cadillac DeVille 4.6L starter VIN: 1G6KD54YX3
found u codes in ipc using on/off button and up arrow.( thanks mike from virginia ) vtd had no data available led me to theft module checked powers and grounds. purple data wire was good replaced theft module relearned keys and she started. thanks for the adv...
2003 Chevrolet Suburban 1500 LS 5.3L starter VIN: 3GNFK16Z73
well this was an intresting journey, while discussing the problem with the customer, they mentioned the car lot where they purchased the car two years ago had called because the gps box needed to be replaced. GPS BOX!!! i never did find it but you know what im...
2003 Chevrolet Silverado 2500 HD 6.6L warning indicators VIN: 1GCHK23163
Sent abs module to "Speedometer repair guy" (google it) and reinstalled module and have had no complaints of light since. Thanks for the replies, DeLyle
2005 Chevrolet Silverado 2500 HD 6.6L Surge, MIL Lamp on VIN: 1GCHK23225
Thanks to everyone for thier help. I really appreciate it. I ran the injector return test and found # 2 and #6 returning to much fuel. I replaced them and the customer has not returned. thanks again! Trouble codes: P1093 (HISTORY Fuel Pressure Low During Power Enrichment).
2007 Chevrolet Silverado 1500 LTZ 5.3L Right Front Upper & Lower Signal Light VIN: 1GCEK19J27
First off, thanks to everyone who replied to my help request. I thought I had seen everything until this truck showed up on my doorstep, however without your help I would not have succeeded. As suggested, I pulled the fuse 26 (right park) in the underhood fus...
2008 Saturn Outlook XE 3.6L compressor VIN: 5GZER13788
Thanks for the help guys, I checked for codes-none found. Wiggle tested the wires and somewhere along the way it started working. did not find anything conclusive for now. I had recharged the system and it was in the shop so was warm enough to operate so its a...
2008 Saturn Outlook XR 3.6L Misfire VIN: 5GZEV237X8
Had the power train and trans modules reprogramed with no love decided to flush the trans with bg fluid and install conditioner all is fine now test procedures were scan for miss fires lightly tap brake pedal when simptom occured.
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