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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for June 22, 2013
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Open Help Requests for GM
Help Request Answers
1989 Chevrolet K3500 Cheyenne 7.4L Poor Idle Quality VIN: 1GCGK34N0K
Truck has a rough idle, worse cold than warm, hunts when first started. Have installed a re-man engine. and since replaced t-body, iac, tps, map, egr, ignition module in distributor, smoke tested for vacuum leaks, timing set at 6 degrees, adjusted the valve cl...
1996 Chevrolet S10 LS 4.3L Hesitation, Surge, Cuts out VIN: 1GCCS19X7T
Ok Guys, this junker is about to send me over the edge, I bought this and had it shipped to me with the belief that the fuel pump was bad, and it was, produced 17psi. So I replaced the pump, and everything else in my related history, just because I am selling ... Trouble codes: P1111
2008 Chevrolet Equinox LT 3.4L Tpms Light VIN: 2CNDL53F18
Vehicle came to shop with tpms light "on", the pressure is displayed in instrument panel and is accurate on every sensor, if pressure is changed it is immediately updated in the instrument cluster. Performed tire pressure registration 4 times and the light sta...
2009 Chevrolet Cobalt LS 2.2L BUS Communication VIN: 1G1AR55H29
We got a real "Head Scratcher" here...We have a customer with this Cobalt that seems to be loosing communication on the serial data line while driving but cannot duplicate. Scan for codes - found several Comminucation BUS codes in history of BCM (U2100, U2105,... Trouble codes: U2100 (CANBUS Communication), U2105 (Lost Communication w/ECM), U2106 (Lost Comminucation w/TCM), U2111 (Lost Communication w/Steering Control Module), U2129 (Lost Communication w/Remote Function Actuation), B1325 (Device Power 1 Circuit Voltage below Threshold)
2012 Chevrolet Cruze LS 1.8L engine mechanical VIN: KL1PJ5C51C
dtc p0011 set after engine rebuilt was done all possible cause was alreday done but still failed,any new idea will help,thanks
2005 GMC Envoy SLE 4.2L passenger front window VIN: 1GKDT13S15
Vehicle came in with SES light on and passenger front window inoperative, we took care of the SES light but having quite the tiime with this passenger front window. Pulled codes from passenger and driver door modules had Class 2 comm problem with passenger doo...

Fixes & Summaries for GM
Fix/Summary Answers
2008 Chevrolet Equinox LTZ 3.4L Abs VIN: 2CNDL33F68
fellow memebers, i really appreciate the valuable input from the people that replied to our tech help request... we did manage to resolve the situation, by replacing the BPMV (half of the infamous ABS Module) basically the part where the "pressure is read" ...
2006 GMC Envoy XL Denali 5.3L Power Steering VIN: 1GKET66M56
Hello everyone and thanks for all the replies. We wound up replacing the power steering rack and the noise was gone. What was strange is the seals where the lines attach to the rack assembly are closed off. They are steel caps with rubber casings, like the top...
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