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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for June 16, 2011
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Open Help Requests for GM
Help Request Answers
2004 Buick Rendezvous CXL 3.6L ebcm VIN: 3G5DB037X4
Hello there, we have a rather interesting problem here. 2004 rendezvous that has had a new ig switch, ebcm, continues to have intermittent or no communication activating trac, abs, stability, etc light/warnings the codes are p0121 tps signal 1, p0318 rough roa...
1991 Cadillac Allante 4.5L Electronic VIN: I12KLMFPRE
Hey all, hope you have ideas on this one. I retrofitted this cadillac last season, installed new compressor, dryer and charged up. Worked great all last summer. He came in this season with no cooling. Compressor is not getting power. I made sure all bcm and ec...
2001 Cadillac Seville STS 4.6L 3-4 Shift VIN: 1G6KY54971
Customer complained of high revving driving down highway. Checked codes-p0734 gear ratio error in fourth checked trans adapts and they look good road test and shifted hard i cleared codes and shifted good but when computer commanded 3-4 shift the trans did not...
2003 Cadillac DeVille 4.6L Accessories VIN: Y03U116356
Hi have this 03 cadillac deville, it will over heat when ac is on, hi speed fan dooes not come on. Gives code p0481, i replaced all the fan relays ( had buncch of them), i can use my modis to turn both fan on, but ecm will not turn the high speed on, if i clea...
1990 Chevrolet Corvette 5.7L Antenna Cable VIN: 1G1YY2387L
Trying to remove Power Antenna. Everything is ready to remove except I can't find where to disconnect cable. Help! al
1996 Chevrolet C1500 4.3L No Start VIN: 1GCEC14W9T
This vehicle has been like this for a while. It will just crank and not start at times. Seems worse first thing in morning but will also act up during day. Fuel pump pressure is fine. Electrical components such as plugs, wires and cap are ok. This vehicle runs...
1996 Chevrolet Astro 4.3L Cuts out, Misfire, MIL Lamp on VIN: 1GNDM19W7T
My Astro van I depend on is not running right. Intermitantly after driving at least 15 miles the engine will start to misfire. Feels like its dropping multiple cylinders at once, then straightens out. eache time it does this it imediatly sets a P0340 cam senso... Trouble codes: P0340 (Camshaft sensor malfunction)
1999 Chevrolet K1500 Suburban 5.7L Misfire, MIL Lamp on VIN: 3GNFK16RZZ
At idle we lose spark to #2 clynder sometime 8 we can watch it drop out on the scope we have new cap and rotor new distributor new plugs ,has anyone seen this .it is not injection nor anything else but we lose spark to #2 cly at idle only also crank sensor has...
2000 Chevrolet Silverado 1500 4.3L Surge VIN: 1GCEK14W1Y
Hi this silvarado has a two part problem that may or may not be related. If you cruise the truck at 2000 rpm in third gear ( Manual Trans ) it has a rythmyic cut out / surge that the best way i can decribe is that it feels like you are driving a small 4cyl car... Trouble codes: P1404 (EGR Closed Position Performance)
2005 Chevrolet Trailblazer LT 4.2L Drivers Side Aux. A/C Line VIN: 1GNET16S25
Hi this 05 trail blazer has a leaking a/c line on drivers side to rear aux. A/c box. Im not sure about how to replace this line. Dealer says it comes with heater line. Also alldata says 2.1 hours is that right? thanks bye
2006 Chevrolet Colorado LT 3.5L hard start sometimes VIN: 1GCDT13675
Okay everybody before you jump to the conclusion that I have the timing off, I already checked that multiple times unfortunately since that was what I thought also. Anyway truck originally came in for P0300 and rough idle compression Test has cylinders ranging... Trouble codes: P0017 (Crank/cam position bank 1 sensor b- correlation)
2005 GMC Canyon Z85 SLE 3.5L Rf Wheel Sensor VIN: 1GTDT19695
All fuses are good and relay test ok.told boss should get another ebcm controller i was thinking that i had a bad one out of the box(acdelco)try another one???
1992 Pontiac Grand Am SE 2.3L System Voltage VIN: 1G2NE5436N
This car came in with the abs and brake light on with ten different abs codes stored. I replaced the brake pedal switch and cleared the codes. Now this code A037 keeps popping up. This code sets when the EBCM detects system voltage over 16 volts. I'm kind of l...
1996 Pontiac Firebird Trans Am 5.7L No Start VIN: 2G2FV22P1T
Vehicle came in as a no start. Customer stated the individual he recently purchased the car from said that it had been quitting intermittently. After my customer purchased the car it finally died and would not restart. I ran the troubleshooting according to Mi...

Fixes & Summaries for GM
Fix/Summary Answers
2005 Cadillac STS 3.6L starter VIN: 1G6DW67775
I'm calling this one fixed. Thanks for all the great replies. We decided to go with the tsb and replace the remote control door lock receiver. has been fine ever since. good day to all.
2007 Cadillac SRX 3.6L Speedometer VIN: 1GYEE63767
OK- this one is fixed, thank you all for the info/suggestions. Here goes, we tripple checked everything we knew about this vehicle. Customer had only had the vehicle a couple thousand miles and had limited knowledge of its history.. We verified it was opted w...
2007 Chevrolet Silverado 1500 LS 4.8L Poor Idle Quality VIN: 1GCEC14C27
"throttle actuator control" is the new name of the throttle body for those who were confused, tps and iac are contained within this fly by wire system. After talking to the customer myself, other than relying on our writer, found that this has been going on fo...
1998 Pontiac Grand Prix GTP 3.8L MIL Lamp on VIN: 1G2WP1217W
Thank you for all the replies, but I still did not find a problem. The customer needed the car back before I could finish. I did find one thing out that maybe will help someone. When the boost gauge didn't work, thats when the problem would show up. When the b... Trouble codes: P0122 (Tps sensor circuit low voltage).
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