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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for December 5, 2012
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Open Help Requests for GM
Help Request Answers
1992 Buick Park Avenue Ultra 3.8L no start VIN: 1G4CU5313N
Hi everyone, this is my first question, as I am new to this great site! 1992 buick Park Avenue Ultra. Customer came in with a no start. checked all the basics and realized that there is no power to fuse #1 at the underdash fuse box.the fuse and all other fuses...
1970 Cadillac DeVille 7.7L mode switching VIN: L026984533
Help vintage Cadillac techs!! This Deville will not switch modes- defrost / vent / floor ECT. We did a visual inspection of all vacuum lines and components for obvious issues and per some vintage climate control guy's recommendation had the power servo rebuilt...
2003 Cadillac DeVille DHS 4.6L Heater controls VIN: 1G6KD54Y63
This is to Juan in CA who specializes in Cadillac (or anyone with knowledge of this problem). I have an '03 De Ville that I need help aligning cam gears for the defrost/vent/heat door. This is the first one I've tried where replacing the actuator motor is requ...
1988 Chevrolet S10 Blazer Sport 4.3L Right Rear Brake VIN: 1GNCS18Z6J
I can't believe i'm asking for help on what should be a very simple system but i'm baffled by this one. Cust came in with this 2WD Non ABS S10 Blazer wanted us to replace leaking axle seal and shoes(left side),we found it needed wheel cylinders and drums were ...
2000 Chevrolet Prizm 1.8L Hesitation, Cuts out VIN: 1Y1SK5288Y
This vehicle starts and idles great however, it falls flat on its' face when accelerating. The fuel pressure holds at 47lbs always,there are no codes but the engine vacuum drops to 0. I disconnected the exhaust to eliminate a plugged converter and had the same...
2002 Chevrolet Malibu 3.1L Oil level light VIN: 1G1ND52J62
vehicle came in with the complaint of intermittent "oil level" light on. mostly on cold start up. owner had not changed oil in quite a while so they had the oil changed. the problem continued. oil level is full. when i got the car the engine was warm and i cou...
2003 Chevrolet Trailblazer North Face 4.2L Starting (Ignition) VIN: 1GNDT13S03
This vehicle came in with a reduce power and no acceleration and a no start at times , we have checked all ground wires and all fuses. Any help will be appreciated.
2006 Chevrolet Silverado 2500 HD LT 6.6L Excessive Emissions, No Start, Stall VIN: 1GCHK29D36
The customer drove the vehicle to the shop. Excessive grey smoke from tail pipe, no throttle response and vehicle would only go 5 miles per hour. After the customer turned the vehicle off the engine would only fire and shut itself back off. Pushed the vehicle ...
2010 GMC Sierra 1500 WT 5.3L Trailer Module VIN: 1GTSCTE04A
We have code b3894. When through aldata pinpoint test and replaced trialer module/fuel pump module. Did not fix. Then tried brake light switch, no luck. The scanner shows brake signal on at 90psi. The brake lights come on with very light pressure on pedal. As ...
2007 Hummer H3 3.7L Transfer Case VIN: 5GTDN13E67
1st time to Shop, Transfer Case BW NR4 would not engage in any range, 4WD LOW Range would flash, revert to 4AUTO or no light in any position with message display "SERVICE 4WD" on. Determined case motor decoder defective, replaced, and all ranges worked well fo...
1996 Pontiac Grand Am GT 3.1L engine VIN: 1G2NW52M6T
We have a Pontiac Grand Am GT with the 3.1L engine and 187,000 miles on it in the shop. We have worked on this car off and on for the last year and half, but, no engine service or maintenance performed by us. Vehicle came in for us to perform an induction serv...
2004 Saturn Vue Red Line 3.5L transmission VIN: 5GZCZ63444
Hi all, I am preparing to pull the transmission in this Saturn Vue with the Honda powertrain and was wondering if anyone else has pulled one of these before. The procedure on Mitchell is to take the engine and trans. out together and I didn't know if there wa...

Fixes & Summaries for GM
Fix/Summary Answers
2006 Cadillac Escalade EXT 6.0L stability cintrol VIN: 3GYEK62N06
Thanks to David from NY we did a second inspection on this vehicle and found a mutt tire. Vehicle has 3 Goodyear and one off brand with alot of wear on it. I feel sure I can tell the customer that this is the cause of their problem. Thank you for the replies.
1993 Chevrolet S10 Blazer Tahoe 4.3L cylinder
We have decided to put a decent set of tires on the front of this truck and put an honest test drive to determine further issues. I will re-open with any concerns that we may have based on further in depth diagnosis based on these many help recommendations.
2001 Chevrolet Tracker ZR2 2.5L engine VIN: 2CNBJ73411
The timing ended up being a breeze thanks for the reassurance
2006 Chevrolet Impala LT 3.5L MIL Lamp on VIN: 2G1WT58K76
thanks for all of your help. vehicle just returned and we replaced the upstream o2 sensor with a oem sensor. vehicle then set all readiness monitors in 20 miles . performed emissions test and customer is happy. thanks for everyones help! Trouble codes: P1174.
2006 Chevrolet Cobalt SS 2.4L Poor Idle Quality VIN: 1G1AM58BX6
I just want to thank everyone who replied to my help request. All the things that were recommended by my fellow techs had been tried before i posted my request. The only thing that fixed it was a complete reprogram of the pcm. The pcm software was corrupted ca...
2008 Chevrolet Silverado 1500 LT 5.3L Radio VIN: 2GCEK13398
Almost 3 weeks now after battery replacement and still no more problems...I realy hope this is it. Thanks for all the help
1996 Geo Metro LSi 1.3L Temp gauge
I unplugged and cleaned those connectors the one guy (sorry I can't remeber your name) mentioned and it's been fine the customer said. Thanks everyone for there help.
2008 Pontiac Vibe 1.8L Hesitation, Cuts out VIN: 5Y2SL65828
THANKS FOR ALL YOUR HELP GUYS! THE VEHICLE HOWEVER HAS NOT ACTED UP AGAIN FOR US, SO NOT MUCH LEARNED TO PASS ALONG. BUT AGAIN THANK YOU FOR YOUR ADVICE. Trouble codes: P0121 (Throttle position sense switch a performance), P2111 (Throttle Actuator Control TAC Throttle Valve-Stuck Open).
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